Induction of Angiogenesis After TMR: A Comparison of Holmium:YAG, CO 2, and Excimer Lasers
|
|
- Monica Smith
- 6 years ago
- Views:
Transcription
1 Induction of Angiogenesis After TMR: A Comparison of Holmium:YAG, CO 2, and Excimer Lasers G. Chad Hughes, MD, Alan P. Kypson, MD, Brian H. Annex, MD, Bangliang Yin, MD, James D. St. Louis, MD, Shankha S. Biswas, MD, R. Edward Coleman, MD, Timothy R. DeGrado, PhD, Carolyn L. Donovan, MD, Kevin P. Landolfo, MD, and James E. Lowe, MD Divisions of Cardiovascular and Thoracic Surgery and Cardiology and the Department of Radiology, Duke University Medical Center, Durham, North Carolina Background. Transmyocardial laser revascularization (TMR) is an emerging treatment for end-stage coronary artery disease. A variety of lasers are currently available to perform the procedure, although their relative efficacy is unknown. The purpose of this study was to compare changes in myocardial blood flow and function 6 months after TMR with holmium:yttrium-aluminum-garnet (holmium:yag), carbon dioxide (CO 2 ), and xenon chloride excimer lasers in a model of chronic ischemia. Methods. Miniswine underwent subtotal (90%) left circumflex coronary stenosis. Baseline positron emission tomography and dobutamine stress echocardiography were performed to document hibernating myocardium in the left circumflex coronary artery distribution. Animals were then randomized to sham redo-thoracotomy (n 5) or TMR using a holmium:yag (n 5), CO 2 (n 5) or excimer (n 5) laser. Six months postoperatively, the positron emission tomography and dobutamine stress echocardiography studies were repeated and the animals sacrificed. Results. In animals undergoing TMR with holmium: YAG and CO 2 lasers, a significant improvement in myocardial blood flow to the lased left circumflex regions was seen. No significant change in myocardial blood flow was seen in sham- or excimer-lased animals. There was a significant improvement in regional stress function of the lased segments 6 months postoperatively in animals undergoing holmium:yag and CO 2 laser TMR that was consistent with a reduction in ischemia. There was no change in wall motion in sham- or excimer-lased animals. Significantly greater neovascularization was observed in the holmium:yag and CO 2 lased regions than with either the sham procedure or excimer TMR. Conclusions. Transmyocardial laser revascularization with either holmium:yag or CO 2 laser improves myocardial blood flow and contractile reserve in lased regions 6 months postoperatively. These changes were not seen following excimer TMR or sham thoracotomy, suggesting that differences in laser energy or wavelength or both may be important in the induction of angiogenesis. (Ann Thorac Surg 2000;70:504 9) 2000 by The Society of Thoracic Surgeons Transmyocardial laser revascularization (TMR) is emerging as a potential treatment option for patients with end-stage coronary artery disease who are not candidates for coronary angioplasty or bypass surgery. The procedure involves using a laser to create transmural channels from the epicardial to endocardial surface of the left ventricle in regions of chronically ischemic yet viable (hibernating) myocardium. While studies have demonstrated the effectiveness of TMR for relieving angina [1, 2], the relative efficacy of the three lasers most commonly used in clinical practice, namely holmium:yttriumaluminum-garnet (holmium:yag) [2], carbon dioxide (CO 2 ) [1], and xenon chloride excimer [3], is unknown. The purpose of the present study was to compare these Accepted for publication Mar 14, Address reprint requests to Dr Lowe, Department of Surgery, Duke University Medical Center, Box 3954, Durham, NC 27710; Lowe0004@mc.duke.edu. three lasers in a recently characterized porcine model of hibernating myocardium [4, 5]. Six months postoperatively, laser-treated and sham-treated animals were examined for changes in regional myocardial blood flow (MBF) using positron emission tomography (PET), myocardial function and contractile reserve using dobutamine stress echocardiography (DSE), and the extent of neovascularization with histologic and histochemical techniques. Material and Methods Twenty adult male miniswine weighing approximately 35 kg each (Harlan-Sinclair, Indianapolis, IN) were used. The Animal Care and Use Committee of Duke University approved all procedures and protocols. Animals received humane care in compliance with the Principles of Laboratory Animal Care formulated by the National Society for Medical Research and the Guide for the Care and 2000 by The Society of Thoracic Surgeons /00/$20.00 Published by Elsevier Science Inc PII S (00)
2 Ann Thorac Surg HUGHES ET AL 2000;70:504 9 COMPARISON OF THREE LASERS 505 Use of Laboratory Animals prepared by the Institute of Laboratory Animal Resources and published by the National Institutes of Health (National Institutes of Health publications 85 23, revised 1985). Chronic Ischemia Model All animals underwent placement of a hydraulic occluder and ultrasonic flow probe (Transonic Systems, Ithaca, NY) around the proximal left circumflex coronary artery (LCX), as previously described [4, 5]. Three days postoperatively, the occluder was inflated to reduce resting blood flow immediately distal to the occluder to 10% of baseline. Animals were then kept in this low-flow state with blood flow recordings performed 3 times per week to assure continued occlusion. PET and DSE After 2 weeks in the low-flow state, animals underwent PET and DSE to document the presence of hibernating myocardium in the LCX distribution. Once the animals had undergone an overnight fast, dynamic PET emission imaging of the heart using 13 N-ammonia and 18 F- fluorodeoxyglucose was performed at rest, as previously described [4 7], to obtain regional estimates of MBF (ml g 1 min 1 ) and glucose utilization (nanomol g 1 min 1 ). The PET scans were interpreted as showing hibernating myocardium if reduced absolute values of myocardial blood flow were noted in the lateral and posteroinferior walls of the left ventricle supplied by the LCX accompanied by normal or increased 18 F- fluorodeoxyglucose uptake in these same regions; results were compared with those in the nonischemic septum [8]. Dobutamine stress echocardiography was performed in 3-minute stages with incremental doses of dobutamine beginning with 5 g kg 1 min 1 and increasing to 40 g kg 1 min 1, as previously described [4, 5]. Based on a standard 16-segment model, wall motion was graded as 1 (normal), 2 (hypokinetic), 3 (akinetic), or 4 (dyskinetic). Regional wall motion score index (WMSI) was calculated at rest, at low dobutamine doses, and at peak stress. Echocardiograms were interpreted in a blinded manner by a cardiologist with expertise in stress echocardiography. Using DSE, viability in the LCX region was defined as an improvement in systolic wall thickening with low-dose dobutamine in myocardial regions with severe hypocontractility at rest. Viable segments were considered ischemic if systolic wall motion deteriorated with stress (biphasic response) [9]. TMR and Sham Redo-Thoracotomy Once the presence of hibernating myocardium in the LCX distribution was demonstrated by PET and DSE, animals were randomly assigned to one of the following groups: TMR with a holmium:yag laser (Cardiogenesis, Sunnyvale, CA) (n 5), TMR with a 800-W CO 2 laser (The Heart Laser, PLC Medical Systems, Milford, MA) (n 5), TMR with a xenon chloride excimer laser (Spectranetics CVX 300, United States Surgical Corporation, Norwalk, CT) (n 5), or sham redo-thoracotomy (n 5). All procedures were performed within 3 days of completion of the baseline PET and DSE studies by a single surgeon using previously described techniques [5]. For animals randomized to TMR, 20 channels were created at 1-cm intervals in the hibernating LCX region. This number of channels consistently treats the entire LCX region [5]. Holmium:YAG channels were created using multiple 2-J pulses, with a total energy level of approximately 20 J per channel. Carbon dioxide laser channels were created using a single 40-J pulse. Excimer channels were created using a fluence of 35 mj mm 2 sec 1 and a pulse rate of 30 pulses per second; the total energy level per channel was approximately 20 J. All laser settings were in accordance with manufacturer recommendations. The occluder and flow probe were left intact. The pericardium was left widely open. Those animals randomized to the sham group underwent an identical repeat thoracotomy; the pericardium was opened but TMR was not performed. In all cases, continuous LCX occlusion was confirmed postoperatively by weekly flow monitoring with the flow probe. Follow-up PET and DSE Six months following TMR or sham redo-thoracotomy, animals underwent repeat PET and DSE. This follow-up timepoint was chosen because it corresponds to the period of maximal anginal relief seen in clinical studies of TMR [1]. To allow comparisons between studies performed at baseline and 6 months and to correct for the known interstudy variability of absolute values of MBF by PET [6, 10], normalization of the data were performed using previously described techniques [10]. For each study, sectors representing the anterior septum were used as the normal reference segments. The 13 N- ammonia activity in the sectors representing the LCX distribution were then expressed as a percentage of the activity measured in the reference segments. Vascular Density Analysis Animals were sacrificed 6 months following TMR or sham thoracotomy for histologic and histochemical staining to assess vascular density in the LCX region [5]. At that time, the channels were identified as punctate regions of scar tissue easily visible on the endocardial surface. Of the 20 original channels per animal, six were randomly chosen for histologic analysis. Sections of myocardium measuring 5 5 mm containing the entire channel length from epicardium to endocardium were made. The sections were placed in longitudinal section in OCT (Optimal Cutting Temperature) and snap frozen in liquid nitrogen. Frozen sections (6 m) were made in a cryostat on microscope slides. Vascular density was assessed using endogenous endothelial alkaline phosphatase [11]. Slides were incubated for 1 hour with nitroblue tetrazolium chloride and 5-bromo-4-chloro-3-indolylphosphate p-toluidine salt (Gibco BRL, Galthersburg, MD) and postfixed in 4% paraformaldehyde. The tissue was then stained with eosin, which shows endothelial cells as blue against a red background. Vascular density was quantitated in a blinded fashion by three indepen-
3 506 HUGHES ET AL Ann Thorac Surg COMPARISON OF THREE LASERS 2000;70:504 9 Fig 1. (A) Normalized LCX region myocardial blood flow by PET preoperatively and 6 months postoperatively. Note significant increase in myocardial blood flow to the lased LCX distribution following TMR with both holmium:yag ( before versus after TMR) and CO 2 ( before versus after TMR) lasers. No significant change in myocardial blood flow was seen after excimer TMR ( before versus after TMR, p 0.11) or sham thoracotomy ( before versus after sham procedure, p 0.2). (B) Resting regional WMSI by DSE preoperatively and 6 months postoperatively. See text for details. (C) Peak stress regional WMSI by DSE preoperatively and 6 months postoperatively. Note significant decrease in stress WMSI consistent with a reduction in ischemia following holmium:yag ( before versus after TMR) and CO 2 ( before versus after TMR) laser TMR. No significant change in peak stress WMSI was seen following excimer TMR ( before versus after TMR, p 0.2) or sham thoracotomy ( before versus after sham procedure, p 0.2). (D) Quantitative vascular density analysis. See text for details. (CO 2 carbon dioxide; DSE dobutamine stress echocardiography; LCX left circumflex coronary artery; PET positron emission tomography; TMR transmyocardial laser revascularization; WMSI wall motion score index; YAG yttrium-aluminum-garnet.) dent observers using a modification of previously described techniques [5, 11, 12]. Endothelial alkaline phosphatase staining was measured using an image analysis system (Olympus IX70 inverted microscope, Olympus America, Melville, NY; Optronics DEI-750 imagecapturing hardware, Meyer Instruments, Houston, TX; PowerTower Pro 180 CPU, Power Computing, Round Rock, TX). Images were captured using Adobe Premiere (Adobe Systems Incorporated, San Jose, CA) and quantified using National Institutes of Health image software. Four randomly selected samples, each containing at least one TMR channel remnant, were analyzed per animal for a total of 20 samples per group. Three random highpower (200 ) fields were examined per sample. Vascular density was analyzed for the myocardium within 0.5 cm of the channel remnant but not including the connective tissue channel itself [13]. For the sham-procedure animals, vascular density was analyzed in 20 randomly selected samples (four per animal) from the ischemic LCX distribution. Statistical Analysis Results are presented as the mean standard error. Myocardial blood flow and glucose utilization by pet, as well as WMSI by DSE, were compared within groups using a paired Student s t test. One-way between-groups analysis of variance was used to compare MBF, WMSI, and vascular density between groups. Statistical significance was considered a p value less than Results Positron emission tomography, DSE, and vascular density data are shown for all groups in Figure 1. In all animals, PET demonstrated a significant decrease in LCX region absolute MBF as compared with that in the corresponding nonischemic septal regions ( versus ml g 1 min 1 for LCX region versus nonischemic septum; p 0.001). There was no difference in normalized baseline LCX region MBF between any of the four groups by one-way analysis of variance. 18 F-
4 Ann Thorac Surg HUGHES ET AL 2000;70:504 9 COMPARISON OF THREE LASERS 507 Fig 2. Endogenous endothelial alkaline phosphatase staining (original magnification, 100 ) of representative sections from hibernating myocardium lased with (A) holmium:yag, (B) CO 2, and (C) excimer lasers and from (D) nonlased hibernating myocardium in an animal from the sham group. Note the progressive decrease in blue staining intensity characteristic of endothelial cells from figures 2A to 2D. (Asterisk location of channel remnant.) fluorodeoxyglucose PET revealed a significant increase in glucose utilization in the regions of decreased blood flow ( versus nanomol g 1 min 1 for LCX region versus septum; p 0.001) consistent with myocardial viability and ischemia. Six months following both holmium:yag and CO 2 laser TMR, there was a significant increase in MBF to the lased regions (Fig 1A). No significant change in MBF was seen after either excimer TMR or sham redo-thoracotomy. Baseline DSE in all animals demonstrated severe hypocontractility at rest in the LCX region. There was no difference in baseline rest or stress LCX-region WMSI among any of the four groups by one-way analysis of variance. Six months following TMR (Fig 1B), there was a trend towards improved resting wall motion in the holmium:yag and CO 2 treated groups, but no change was seen in resting WMSI following either excimer TMR or sham redothoracotomy (all p 0.2). There was a significant improvement in regional WMSI for the lased segments at peak stress (Fig 1C), consistent with a reduction in ischemia, 6 months following holmium:yag and CO 2 laser TMR. No significant change in peak stress regional WMSI was seen following sham redo-thoracotomy or excimer TMR. The TMR channel remnants were easily identified on histologic staining as hypocellular regions filled with connective tissue. Regions similar in appearance were observed 6 months following TMR with each of the three lasers. In no instance were patent channels seen. Histologic analysis of the ischemic LCX region in animals undergoing sham redo-thoracotomy was unremarkable, showing no areas of increased connective tissue. Endogenous endothelial alkaline phosphatase staining demonstrated numerous blood vessels adjacent to the holmium: YAG and CO 2 laser channel remnants (Fig 2). Fewer numbers of vessels were seen adjacent to excimer channels and in nonlased (sham redo-thoracotamy) LCX myocardium. Quantitative vascular density analysis confirmed these observations (Fig 1D). In addition, quantitative analysis revealed vascular density to be greater in holmium:yag- versus CO 2 - treated myocardium. Interobserver variability for vascular density measurements was less than 10%. Comment Since its description [14], TMR has been increasingly used as a treatment for severe angina pectoris in patients
5 508 HUGHES ET AL Ann Thorac Surg COMPARISON OF THREE LASERS 2000;70:504 9 with otherwise nonreconstructable coronary disease [1, 2, 15, 16]. In addition, TMR may be used to treat nonrevascularizable territories in patients undergoing either percutaneous angioplasty or coronary artery bypass grafting [17]. Despite this wide potential application, little is known about the relative efficacy of the three laser types most commonly used clinically for performing TMR: holmium:yag, CO 2, and xenon chloride excimer. The present study suggests that the type of laser used is important to the functional outcome of the procedure, as improved myocardial perfusion and contractile reserve were observed 6 months following holmium:yag and CO 2 laser TMR, but not following excimer TMR. In addition, this study supports prior clinical [1, 9] and experimental [18, 19] work documenting improved regional perfusion, function, or both following TMR. The results also suggest that the mechanism responsible for the improved perfusion is angiogenesis, since large areas of neovascularization were observed only in myocardium treated with holmium:yag and CO 2 lasers. To our knowledge, this study is the first to compare long-term changes in myocardial perfusion and function following TMR with those lasers currently used in clinical practice. However, the results of the present study apply only to the specific models tested, as different versions of these same lasers may possess differing operating profiles. Both holmium:yag and CO 2 lasers are infrared lasers, which use thermal ablation to create transmyocardial channels. Excimer lasers, on the other hand, are cold lasers that operate deep in the ultraviolet spectrum and produce tissue ablation by dissociation of molecular bonds [3]. Consequently, excimer lasers are more purely ablative and produce less damage of surrounding myocardium than do infrared lasers. Of the infrared lasers, holmium:yag produces greater lateral thermal damage than CO 2 [20]. Interestingly, the present study found these known differences in the degree of tissue damage produced by each laser to be paralleled by the amount of neovascularization observed 6 months following their application to chronically ischemic myocardium. The greatest degree of neovascularization was observed with the holmium:yag and CO 2 lasers, whereas there was no significant difference in vascular density between excimer-treated and nonlased myocardium. These anatomic changes were reflected in the functional data as well: improved perfusion by PET and contractile reserve by DSE were observed only in the holmium:yag and CO 2 groups. Pelletier and colleagues [21] recently reported that levels of the angiogenic growth factors transforming growth factor and basic fibroblast growth factor were significantly higher in TMR-treated than in nontreated ischemic rat myocardium. These growth factor elevations were accompanied by a significant angiogenic response. One potential explanation for the results of the present study is that the infrared lasers, with their more extensive tissue injury, may produce a greater local release of angiogenic growth factors and a subsequent increase in neovascularization. Inflammation is an important potential contributor to angiogenesis, and inflammatory cells such as macrophages and neutrophils infiltrating the region of laser injury may release numerous cytokines capable of stimulating the expression of angiogenic growth factors [22]. In summary, this study demonstrates that TMR with both holmium:yag and CO 2 lasers improves long-term perfusion and stress function in hibernating porcine myocardium and that this functional improvement is associated with a significant neovascularization response. In addition, the study suggests that not all laser energy is equivalent, as functional improvement was not seen following excimer TMR. Finally, a continuum in the amount of neovascularization was observed that paralleled the known degree of thermoacoustic damage associated with each of the three lasers, suggesting that greater injury led to greater increases in angiogenesis. This work was supported in part through a National Research Service Award from the National Institutes of Health and the NHLBI (grant # 1 F32 HL ) (G. Chad Hughes) as well as unrestricted educational grants from Cardiogenesis (Sunnyvale, CA), PLC Medical Systems (Milford, MA), and the United States Surgical Corporation (Norwalk, CT). In addition, the authors gratefully acknowledge the technical assistance of Mr Michael Lowe. References 1. Frazier OH, March RJ, Horvath KA. Transmyocardial revascularization with a carbon dioxide laser in patients with end-stage coronary artery disease. N Engl J Med 1999;341: Allen KB, Dowling RD, Fudge TL, et al. Comparison of transmyocardial revascularization with medical therapy in patients with refractory angina. N Engl J Med 1999;341: Mack CA, Magovern CJ, Hahn RT, et al. Channel patency and neovascularization after transmyocardial revascularization using an excimer laser. Results and comparisons to nonlased channels. Circulation 1997;96 [Suppl II]:II St. Louis JD, Hughes GC, Kypson AP, et al. An experimental model of chronic myocardial hibernation. Ann Thorac Surg 2000;69: Hughes GC, Lowe JE, Kypson AP, et al. Neovascularization after transmyocardial laser revascularization in a model of chronic ischemia. Ann Thorac Surg 1998;66: DeGrado TR, Hanson MW, Turkington TG, et al. Myocardial blood flow estimation for longitudinal studies using 13Nammonia and PET. J Nucl Cardiol 1996;3: Gambhir SS, Schwaiger M, Huang SC, et al. Simple noninvasive quantification method for measuring myocardial glucose utilization in humans employing positron emission tomography and flourine-18 deoxyglucose. J Nucl Med 1989; 30: Camici P, Ferrannini E, Opie LH. Myocardial metabolism in ischemic heart disease: basic principles and application to imaging by positron emission tomography. Prog Cardiovasc Dis 1989;32: Donovan CL, Landolfo KP, Lowe JE, Clements F, Coleman RB, Ryan T. Improvement in inducible ischemia during dobutamine stress echocardiography after transmyocardial laser revascularization in patients with refractory angina pectoris. J Am Coll Cardiol 1997;30: Mélon PG, De Landsheere CM, Degueldre C, Peters J-L, Kulbertus HE, Piérard LA. Relation between contractile reserve and positron emission tomographic patterns of per-
6 Ann Thorac Surg HUGHES ET AL 2000;70:504 9 COMPARISON OF THREE LASERS 509 fusion and glucose utilization in chronic ischemic left ventricular dysfunction. J Am Coll Cardiol 1997;30: Takeshita S, Zheng LP, Brogi E, et al. Therapeutic angiogenesis. A single intraarterial bolus of vascular endothelial growth factor augments revascularization in a rabbit ischemic hind limb model. J Clin Invest 1994;93: Channon KM, Qian H, Neplioueva V, et al. In vivo gene transfer of nitric oxide synthase enhances vasomotor function in carotid arteries from normal and cholesterol-fed rabbits. Circulation 1998;98: Kohmoto T, DeRosa CM, Yamamoto N, et al. Evidence of vascular growth associated with laser treatment of normal canine myocardium. Ann Thorac Surg 1998;65: Mirhoseini M, Cayton MM. Revascularization of the heart by laser. J Microsurg 1981;2: Schofield PM, Sharples LD, Caine N, et al. Transmyocardial laser revascularization in patients with refractory angina: a randomised controlled trial. Lancet 1999;353: Burkhoff D, Schmidt S, Schulman SP, et al. Transmyocardial laser revascularisation compared with continued medical therapy for treatment of refractory angina pectoris: a prospective randomized trial. Lancet 1999;354: Hughes GC, Abdel-aleem S, Biswas SS, Landolfo KP, Lowe JE. Transmyocardial laser revascularization: experimental and clinical results. Can J Cardiol 1999;15: Yamamoto N, Kohmoto T, Gu A, DeRosa C, Smith CR, Burkhoff D. Angiogenesis is enhanced in ischemic canine myocardium by transmyocardial laser revascularization. J Am Coll Cardiol 1998;31: Horvath KA, Greene R, Belkind N, Kane B, McPherson DD, Fullerton DA. Left ventricular functional improvement after transmyocardial laser revascularization. Ann Thorac Surg 1998;66: Deckelbaum LI. Cardiovascular applications of laser technology. Lasers Surg Med 1994;15: Pelletier MP, Giaid A, Sivaraman S, et al. Angiogenesis and growth factor expression in a model of transmyocardial revascularization. Ann Thorac Surg 1998;66: Ware JA, Simons M. Angiogenesis in ischemic heart disease. Nat Med 1997;3:
Improved Perfusion and Contractile Reserve After Transmyocardial Laser Revascularization in a Model of Hibernating Myocardium
Improved Perfusion and Contractile Reserve After Transmyocardial Laser Revascularization in a Model of Hibernating Myocardium G. Chad Hughes, MD, Alan P. Kypson, MD, James D. St. Louis, MD, Brian H. Annex,
More informationTherapeutic Angiogenesis in Chronically Ischemic Porcine Myocardium: Comparative Effects of bfgf and VEGF
Therapeutic Angiogenesis in Chronically Ischemic Porcine Myocardium: Comparative Effects of bfgf and VEGF G. Chad Hughes, MD, Shankha S. Biswas, MD, Bangliang Yin, MD, R. Edward Coleman, MD, Timothy R.
More informationAn Experimental Model of Chronic Myocardial Hibernation
An Experimental Model of Chronic Myocardial Hibernation James D. St. Louis, MD, G. Chad Hughes, MD, Alan P. Kypson, MD, Timothy R. DeGrado, PhD, Carolyn L. Donovan, MD, R. Edward Coleman, MD, Bangliang
More informationTransmyocardial Revascularization
Protocol Transmyocardial Revascularization (70154) Medical Benefit Effective Date: 01/01/15 Next Review Date: 09/18 Preauthorization No Review Dates: 01/08, 01/09, 01/10, 01/11, 09/11, 09/12, 09/13, 09/14,
More informationMEDICAL POLICY SUBJECT: TRANSMYOCARDIAL REVASCULARIZATION
MEDICAL POLICY SUBJECT: TRANSMYOCARDIAL 7/21/05, 05/18/06, 03/15/07, 02/21/08,, PAGE: 1 OF: 5 If a product excludes coverage for a service, it is not covered, and medical policy criteria do not apply.
More informationTransmyocardial Laser Revascularization: Epicardial ECG Detection Provides Efficient R-Wave Triggering during Mobilization of the Heart
Journal of Clinical Laser Medicine & Surgery Volume 21, Number 3, 2003 Mary Ann Liebert, Inc. Pp. 145 150 Transmyocardial Laser Revascularization: Epicardial ECG Detection Provides Efficient R-Wave Triggering
More informationEvaluation of the impact of transmyocardial laser (CO ) 2 revascularisation on myocardial perfusion 6-months observations
Evaluation of the impact of transmyocardial laser (CO ) 2 revascularisation on myocardial perfusion 6-months observations Anna Teresińska 1, Marian Śliwiński 2, Joanna Potocka 1, Bożenna Szumilak 1, Elżbieta
More informationTMR Patient Selection. Physician Training
TMR Patient Selection Physician Training The Clinical Need Mukherjee et al. Prognosis for untreated medically refractory patients. (JACC, 1999, Cleveland Clinical Review) Clinical Outcome for Eligible
More informationEarly Results of Transmyocardial Revascularization With a Holmium Laser
Early Results of Transmyocardial Revascularization With a Holmium Laser Aldo Milano, MD, Stefano Pratali, MD, Giuseppe Tartarini, MD, Rita Mariotti, MD, Marco De Carlo, MD, Giovanni Paterni, MD, Giuseppe
More informationTransmyocardial Revascularization. Description
Subject: Transmyocardial Revascularization Page: 1 of 11 Last Review Status/Date: December 2014 Transmyocardial Revascularization Description Transmyocardial revascularization (TMR), also known as transmyocardial
More informationDo transmyocardial and percutaneous laser revascularization induce silent ischemia? An assessment by exercise testing
Do transmyocardial and percutaneous laser revascularization induce silent ischemia? An assessment by exercise testing Jonathan Myers, PhD, a Stephen N. Oesterle, MD, b James Jones, MD, c and Daniel Burkhoff,
More informationTransmyocardial Revascularization. Description
Subject: Transmyocardial Revascularization Page: 1 of 12 Last Review Status/Date: December 2016 Transmyocardial Revascularization Description Transmyocardial revascularization (TMR), also known as transmyocardial
More informationJournal of the American College of Cardiology Vol. 34, No. 1, by the American College of Cardiology ISSN /99/$20.
Journal of the American College of Cardiology Vol. 34, No. 1, 1999 1999 by the American College of Cardiology ISSN 0735-1097/99/$20.00 Published by Elsevier Science Inc. PII S0735-1097(99)00162-X Factors
More informationTransmyocardial Laser Revascularization (TMLR) by Gated Myocardial Perfusion Scintigraphy
Evaluation of Transmyocardial Laser Revascularization (TMLR) by Gated Myocardial Perfusion Scintigraphy T. Grüning, 1 * J. Kropp, 1 S. Wiener, 1 W.-G. Franke, 1 S. M. Tugtekin 2, V. Gulielmos 2, and S.
More informationTransmyocardial Revascularization
Transmyocardial Revascularization Policy Number: 7.01.54 Last Review: 5/2014 Origination: 5/2003 Next Review: 5/2015 Policy Blue Cross and Blue Shield of Kansas City (Blue KC) will provide coverage for
More informationConventional interventional treatment of coronary
Transmyocardial Laser Revascularization With Excimer Laser: Clinical Results at 1 Year Leonard Y. Lee, MD, Maureen F. O Hara, RN, Eileen B. Finnin, RN, Rory Hachamovitch, MD, Massamiliano Szulc, PhD, Paul
More informationThere is a growing appreciation for the fact that there
Evidence of Vascular Growth Associated With Laser Treatment of Normal Canine Myocardium Takushi Kohmoto, MD, Carolyn M. DeRosa, BS, Noriyoshi Yamamoto, Peter E. Fisher, MD, Pedram Failey, BA, Craig R.
More informationIntramyocardial and intracoronary basic fibroblast growth factor in porcine hibernating myocardium: A comparative study
Intramyocardial and intracoronary basic fibroblast growth factor in porcine hibernating myocardium: A comparative study Shankha S. Biswas, MD a G. Chad Hughes, MD a John E. Scarborough, MD a Patrick W.
More informationAm J Cardiol,2001;87(7):861-7 Quantitative analysis of myocardial perfusion changes with transmyocardial laser revascularization. Burns SM, Brown S, White CA, Tait S, Sharples L, Schofield PM. Transmyocardial
More informationTransmyocardial Revascularization
Transmyocardial Revascularization Policy Number: 7.01.54 Last Review: 5/2018 Origination: 5/2003 Next Review: 5/2019 Policy Blue Cross and Blue Shield of Kansas City (Blue KC) will provide coverage for
More informationTransmyocardial laser revascularization (TMR) is an emerging
ASAIO Journal 2000 Effects of Transmyocardial Laser Revascularization by Using a Prototype Pulsed CO 2 Laser on Contractility and Perfusion of Chronically Ischemic Myocardium in a Porcine Model YASMIN
More informationMyocardial viability testing. What we knew and what is new
Myocardial viability testing. What we knew and what is new Dr B K S Sastry, MD, DM. CARE Hospitals, Hyderabad What is Viability Viability Dysfunctional myocardium subtended by diseased coronary arteries
More informationIs transmyocardial revascularisation of benefit in addition to coronary artery bypass grafting for patients with diffuse coronary disease?
Interactive CardioVascular and Thoracic Surgery 3 (2004) 581 585 Best evidence topic - Cardiac general Is transmyocardial revascularisation of benefit in addition to coronary artery bypass grafting for
More informationGated blood pool ventriculography: Is there still a role in myocardial viability?
Gated blood pool ventriculography: Is there still a role in myocardial viability? Oliver C. Alix, MD Adult Clinical and Nuclear Cardiology St. Luke s Medical Centre - Global City Case Presentation A 62-year-old
More informationPearls & Pitfalls in nuclear cardiology
Pearls & Pitfalls in nuclear cardiology Maythinee Chantadisai, MD., NM physician Division of Nuclear Medicine, Department of radiology, KCMH Principle of myocardial perfusion imaging (MPI) Radiotracer
More informationThe idea of creating direct communications between
CURRENT REVIEW Myocardial Laser Revascularization: the Controversy and the Data Charles R. Bridges, MD, ScD Department of Surgery, University of Pennsylvania Health System, Philadelphia, Pennsylvania The
More informationJournal of the American College of Cardiology Vol. 34, No. 4, by the American College of Cardiology ISSN /99/$20.
Journal of the American College of Cardiology Vol. 34, No. 4, 1999 1999 by the American College of Cardiology ISSN 0735-1097/99/$20.00 Published by Elsevier Science Inc. PII S0735-1097(99)00340-X Low-Level
More informationThe Food and Drug Administration (FDA) recently
Excimer Versus Carbon Dioxide Transmyocardial Laser Revascularization: Effects on Regional Left Ventricular Function and Perfusion Jeffrey S. Martin, MD, Umer Sayeed-Shah, MD, John G. Byrne, MD, Mark H.
More informationStable Ischemic Heart Disease. Ivan Anderson, MD RIHVH Cardiology
Stable Ischemic Heart Disease Ivan Anderson, MD RIHVH Cardiology Outline Review of the vascular biology of atherosclerosis Why not just cath everyone with angina? Medical management of ischemic cardiomyopathy
More informationRational use of imaging for viability evaluation
EUROECHO and other imaging modalities 2011 Rational use of imaging for viability evaluation Luc A. Pierard, MD, PhD, FESC, FACC Professor of Medicine Head, Department of Cardiology, CHU Liège, Belgium
More informationPrevious surgical clinical trials in humans with carbon
Short- and Intermediate-Term Clinical Outcomes From Direct Myocardial Laser Revascularization Guided by Biosense Left Ventricular Electromechanical Mapping Ran Kornowski, MD; Donald S. Baim, MD; Jeffrey
More informationRadiologic Assessment of Myocardial Viability
November 2001 Radiologic Assessment of Myocardial Viability Joshua Moss, Harvard Medical School Year III Patient EF 66yo female with a 3-year history of intermittent chest pain previously relieved by sublingual
More informationTransmyocardial laser revascularization (TMR) is a new
Cardiac Sympathetic Denervation After Transmyocardial Laser Revascularization Thabet Al-Sheikh, MD; Keith B. Allen, MD; Susan P. Straka, RN; David A. Heimansohn, MD; Richard L. Fain, BS; Gary D. Hutchins,
More informationTRANSMYOCARDIAL REVASCULARIZATION
TRANSMYOCARDIAL REVASCULARIZATION Non-Discrimination Statement and Multi-Language Interpreter Services information are located at the end of this document. Coverage for services, procedures, medical devices
More informationDOWNLOAD PDF MYOCARDIAL CONTRAST TWO DIMENSIONAL ECHOCARDIOGRAPHY (DEVELOPMENTS IN CARDIOVASCULAR MEDICINE)
Chapter 1 : Imaging Cardiovascular Medicine Stanford Medicine contrast two-dimensional echocardiography (MC-2DE), a new and exciting diagnostic methodology for assessment of myocardial perfusion, which
More informationCardiac Imaging Tests
Cardiac Imaging Tests http://www.medpagetoday.com/upload/2010/11/15/23347.jpg Standard imaging tests include echocardiography, chest x-ray, CT, MRI, and various radionuclide techniques. Standard CT and
More informationEcho in CAD: Wall Motion Assessment
Echo in CAD: Wall Motion Assessment Joe M. Moody, Jr, MD UTHSCSA and STVHCS October 2007 Relevant References ACC/AHA/ASE 2003 Guideline Update for the Clinical Application of Echocardiography Bayes de
More informationTitle. CitationJournal of Nuclear Cardiology, 23(3): Issue Date Doc URL. Rights. Type. File Information
Title Incidental focal myocardial 18F-FDG uptake indicatin Aikawa, Tadao; Naya, Masanao; Manabe, Osamu; Obara, Author(s) Hiroyuki CitationJournal of Nuclear Cardiology, 23(3): 596-598 Issue Date 2016-06
More informationCardiac Imaging. Kimberly Delcour, DO, FACC. Mahi Ashwath, MD, FACC, FASE. Director, Cardiac CT. Director, Cardiac MRI
Cardiac Imaging Kimberly Delcour, DO, FACC Director, Cardiac CT Mahi Ashwath, MD, FACC, FASE Director, Cardiac MRI Cardiac Imaging Discuss the clinical applications of and indications for: Cardiac CT Nuclear
More informationTransmyocardial revascularization (TMR) effectively
Holmium: YAG Laser Transmyocardial Revascularization Relieves Angina and Improves Functional Status James W. Jones, MD, Sheila E. Schmidt, MD, Bruce W. Richman, MA, Charles C. Miller III, PhD, Kenneth
More informationPercutaneous Transluminal Myocardial
IAGS 1998 Proceedings Percutaneous Transluminal Myocardial Revascularization: An Emerging Te c h n o l o g y Fayaz A. Shawl, MD B a c k g r o u n d. Transmyocardial revascularization (TMR) is a form of
More informationThe Journal of THORACIC AND CARDIOVASCULAR SURGERY SURGERY FOR ACQUIRED HEART DISEASE. Volume 113 Number 4 April 1997
Volume 113 Number 4 April 1997 The Journal of THORACIC AND CARDIOVASCULAR SURGERY SURGERY FOR ACQUIRED HEART DISEASE TRANSMYOCARDIAL LASER REVASCULARIZATION: RESULTS OF A MULTICENTER TRIAL WITH TRANSMYOCARDIAL
More informationAngiogenesis Is Enhanced in Ischemic Canine Myocardium by Transmyocardial Laser Revascularization
1426 JACC Vol. 31, No. 6 EXPERIMENTAL STUDIES Angiogenesis Is Enhanced in Ischemic Canine Myocardium by Transmyocardial Laser Revascularization NORIYOSHI YAMAMOTO, MD, TAKUSHI KOHMOTO, MD, ANGUO GU, MD,
More informationInflammatory Response and Angiogenesis After Percutaneous Transmyocardial Laser Revascularization
Inflammatory Response and Angiogenesis After Percutaneous Transmyocardial Laser Revascularization Alessandro S. Bortone, MD, PhD, Donato D Agostino, MD, Stefano Schena, MD, Giuseppe Rubini, MD, Paolino
More informationJournal of the American College of Cardiology Vol. 39, No. 3, by the American College of Cardiology ISSN /02/$22.
Journal of the American College of Cardiology Vol. 39, No. 3, 2002 2002 by the American College of Cardiology ISSN 0735-1097/02/$22.00 Published by Elsevier Science Inc. PII S0735-1097(01)01763-6 Strain
More informationSung A Chang Department of Internal Medicine, Division of Cardiology, Sungkyunkwan University School of Medicine, Samsung Medical Center
CMR Perfusion and Viability A STICH Out of Time? Sung A Chang Department of Internal Medicine, Division of Cardiology, Sungkyunkwan University School of Medicine, Samsung Medical Center Can Imaging Improve
More informationCardial MRI; Approaching the Level of Gold Standard for Viability Assessment
Cardial MRI; Approaching the Level of Gold Standard for Viability Assessment 용환석 고려대학교구로병원영상의학과 Viability Hibernating myocardium a state of myocardial hypocontractility during chronic hypoperfusion, in
More informationHospital, 6 Lukon Road, Lukong Town, Changhua Shien, Taiwan 505, Taiwan.
Volume 1, Issue 1 Image Article Resolution of Inferior Wall Ischemia after Successful Revascularization of LAD Lesion: The Value of Myocardial Perfusion Imaging in Guiding Management of Multi-vessel CAD
More informationSafety and Efficacy of the Coronary Sinus Reducer in Patients with Refractory Angina: the COSIRA Trial
Safety and Efficacy of the Coronary Sinus Reducer in Patients with Refractory Angina: the COSIRA Trial (COronary SInus Reducer for Treatment of Refractory Angina) Stefan Verheye, MD Cardiovascular Center,
More informationAngiogenesis in Transmyocardial Revascularization: Comparison of Laser Versus Mechanical Punctures
THORACIC SURGERY DIRECTORS ASSOCIATION AWARD The Thoracic Surgery Directors Association (TSDA) Resident Research Award, sponsored by Medtronic, Inc, was established in 1990 to encourage resident research
More informationJournal of the American College of Cardiology Vol. 46, No. 10, by the American College of Cardiology Foundation ISSN /05/$30.
Journal of the American College of Cardiology Vol. 46, No. 10, 2005 2005 by the American College of Cardiology Foundation ISSN 0735-1097/05/$30.00 Published by Elsevier Inc. doi:10.1016/j.jacc.2005.06.079
More informationMyocardial Perfusion: Positron Emission Tomography
Myocardial Perfusion: Positron Emission Tomography TH. Schindler, MD University Hospitals of Geneva, Cardiovascular Center, Geneva, Switzerland ESC 2010 Stockholm Personal Disclosure Research Grant support
More informationNEW INTERVENTIONAL TECHNOLOGIES
by Lawrence M Prescott, PhD NEW INTERVENTIONAL TECHNOLOGIES EXPAND TREATMENT OPTIONS FOR CARDIOVASCULAR DISEASE Novel interventional techniques are proving to be of particular value in the treatment of
More informationAssessment of Ischemia and Viability
EAE Teaching Course Bucharest, 2010 Assessment of Ischemia and Viability Jens-Uwe Voigt Dpt. of Cardiology University Leuven Belgium Assessment of Ischemia & Viability resting wall motion Stress Testing
More informationPercutaneous transmyocardial laser revascularisation for severe angina: the PACIFIC randomised trial
Articles Percutaneous transmyocardial laser revascularisation for severe angina: the PACIFIC randomised trial Stephen N Oesterle, Timothy A Sanborn, Nadir Ali, Jon Resar, Stephen R Ramee, Richard Heuser,
More informationTMR Clinical Application and Surgical Technique. Physician Training
TMR Clinical Application and Surgical Technique Physician Training Clinical Application Surgical procedure Performed as in-patient General anesthetic Image courtesy of Keith Allen, MD, St. Vincent Hospital,
More informationZachary I. Hodes, M.D., Ph.D., F.A.C.C.
Zachary I. Hodes, M.D., Ph.D., F.A.C.C. Disclamer: I personally have no financial relationship with any company mentioned today. The Care Group, LLC does have a contract with Cardium to participate in
More informationFFR Incorporating & Expanding it s use in Clinical Practice
FFR Incorporating & Expanding it s use in Clinical Practice Suleiman Kharabsheh, MD Consultant Invasive Cardiology Assistant professor, Alfaisal Univ. KFHI - KFSHRC Concept of FFR Maximum flow down a vessel
More informationHow to Evaluate Microvascular Function and Angina. Myeong-Ho Yoon Ajou University Hospital
How to Evaluate Microvascular Function and Angina Myeong-Ho Yoon Ajou University Hospital Angina without Coronary Artery Disease (CAD) Prevalence: 20-30% going c-angiography, with a higher prevalence (almost
More informationStress Echo in viability estimation of patients with ischemic heart disease and low LVEF. Prognostic implications.
Stress Echo in viability estimation of patients with ischemic heart disease and low LVEF. Prognostic implications. Stefanos Karagiannis MD PhD Cardiologist Director Echocardiology Dept ATHENS MEDICAL CENTER
More informationHistological Findings After Transmyocardial Laser Revascularization
326 Histological Findings After Transmyocardial Laser Revascularization Thomas Krabatsch, M.D.,' Frank Schaper, M.D.," Corinna Leder, M.D.," Jens Tulsner, M.D.,' Uwe Thalmann, M.D.,** and Roland Hetzer,
More informationTypical chest pain with normal ECG
Typical chest pain with normal ECG F. Mut, C. Bentancourt, M. Beretta Nuclear Medicine Service, Asociacion Española Montevideo, Uruguay Clinical history Male 41 y.o. Overweight, hypertension, high cholesterol,
More informationCardiovascular Imaging Stress Echo
Cardiovascular Imaging Stress Echo Theodora A Zaglavara, MD, PhD Cardiac Imaging Department INTERBALKAN MEDICAL CENTER Thessaloniki GREECE Evolution of Stress Echo: From Innovation to a Widely Established
More informationOld and new insights into viability:perfusion and Perfusion Reserve
Old and new insights into viability:perfusion and Perfusion Reserve R.Senior Professor of Clinical Cardiology Consultant Cardiologist and Director of Echo,Royal Brompton Hospital,London and Northwick Park
More informationASSESSMENT OF MYOCARDIAL VIABILITY AND PROTECTION DURING CABG
ASSESSMENT OF MYOCARDIAL VIABILITY AND PROTECTION DURING CABG Solomon Aronson, M.D., F.A.C.C., F.C.C.P. Department of Anesthesia & Critical Care University of Chicago Dynamic imaging with stress echocardiography
More informationSummary Protocol ISRCTN / NCT REVIVED-BCIS2 Summary protocol version 4, May 2015 Page 1 of 6
Summary Protocol REVIVED-BCIS2 Summary protocol version 4, May 2015 Page 1 of 6 Background: Epidemiology In 2002, it was estimated that approximately 900,000 individuals in the United Kingdom had a diagnosis
More informationBeating-heart surgery avoids cardiopulmonary bypass
Intraoperative Ischemia and Long-Term Events After Minimally Invasive Coronary Surgery Marco Zimarino, MD, Sabina Gallina, MD, Maria Di Fulvio, MD, Michele Di Mauro, MD, Gabriele Di Giammarco, MD, Raffaele
More informationCase Report. Case Report. Ana Lúcia Martins Arruda, Altamiro Ozório, Eloisa Mattos, José Lázaro de Andrade, Thomas Porter, Wilson Mathias Jr
Case Report Hypoperfusion of the Left Ventricle in the Absence of Changes in Segmental Contractility as Observed through Echocardiography by Using Microbubbles During Dobutamine Infusion Ana Lúcia Martins
More informationSHOCKWAVE THERAPY FOR REFRACTORY ANGINA PECTORIS
SHOCKWAVE THERAPY FOR REFRACTORY ANGINA PECTORIS S. Marra MD FESC G. Alunni MD Cardiology 2 Torino University S. Giovanni Battista Hospital Italy Ischemic area by SPECT O.C.83, Female Hypertension Previous
More informationI have no financial disclosures
Manpreet Singh MD I have no financial disclosures Exercise Treadmill Bicycle Functional capacity assessment Well validated prognostic value Ischemic assessment ECG changes ST segments Arrhythmias Hemodynamic
More informationViability Testing Using Dynamic Echocardiography
Viability Testing Using Dynamic Echocardiography Theodora A Zaglavara, MD, PhD Director of Echocardiography EUROMEDICA KYANOUS STAVROS HOSPITAL Thessaloniki GREECE Goals of Cardiac Imaging in Coronary
More informationCardiovascular nuclear imaging employs non-invasive techniques to assess alterations in coronary artery flow, and ventricular function.
National Imaging Associates, Inc. Clinical guidelines CARDIOVASCULAR NUCLEAR MEDICINE -MYOCARDIAL PERFUSION IMAGING -MUGA Original Date: October 2015 Page 1 of 9 FOR CMS (MEDICARE) MEMBERS ONLY CPT4 Codes:
More informationCardiovascular nuclear imaging employs non-invasive techniques to assess alterations in coronary artery flow, and ventricular function.
National Imaging Associates, Inc. Clinical guidelines CARDIOVASCULAR NUCLEAR MEDICINE -MYOCARDIAL PERFUSION IMAGING -MUGA CPT4 Codes: Refer to pages 6-9 LCD ID Number: L33960 J 15 = KY, OH Responsible
More informationCardiology for the Practitioner Advanced Cardiac Imaging: Worth the pretty pictures?
Keenan Research Centre Li Ka Shing Knowledge Institute Cardiology for the Practitioner Advanced Cardiac Imaging: Worth the pretty pictures? Howard Leong-Poi, MD, FRCPC Associate Professor of Medicine St.
More informationSPECT-CT: Τι πρέπει να γνωρίζει ο Καρδιολόγος
SPECT-CT: Τι πρέπει να γνωρίζει ο Καρδιολόγος Δρ Αναστασία Κίτσιου Διευθύντρια, Καρδιολογική Κλινική, Σισμανόγλειο ΓΝΑ Chair, Education Committee, Section on Nuclear Cardiology & Cardiac CT, EACVI, ESC
More informationCORONARY ARTERY DISEASES
CORONARY ARTERY DISEASES It has been estimated that over one third of the population eventually will die of CAD, and 20% will develop symptoms when younger than age 60 years. ANATOMY OF THE CORONARY ARTERIES
More informationValue of Assessment of Viable and Ischemic Myocardium and Techniques Such as MRI, Radionuclide Imaging
Chapter 2 Imaging for Viable and Ischemic Myocardium Value of Assessment of Viable and Ischemic Myocardium and Techniques Such as MRI, Radionuclide Imaging Catalin Loghin and K. Lance Gould Introduction
More informationReversible defect of 123 I-15-(p-iodophenyl)-9-(R,S)-methylpentadecanoic acid indicates residual viability within infarct-related area
ORIGINAL ARTICLE Annals of Nuclear Medicine Vol. 16, No. 3, 183 187, 2002 Reversible defect of 123 I-15-(p-iodophenyl)-9-(R,S)-methylpentadecanoic acid indicates residual viability within infarct-related
More informationPerfusion and Contractile Reserve in Chronic Dysfunctional Myocardium: Relation to Functional Outcome After Surgical Revascularization
Perfusion and Contractile Reserve in Chronic Dysfunctional Myocardium: Relation to Functional Outcome After Surgical Revascularization Jeroen J. Bax, MD; Don Poldermans, MD; Arend F.L. Schinkel, MD; Eric
More informationPET for the Evaluation of Myocardial Viability
PET for the Evaluation of Myocardial Viability Myocardial viability assessment is an important part of cardiac PET to assist physicians to decide upon the best surgical or medical procedures. F-18 FDG
More informationCoronary artery bypass grafting (CABG) without an
Coronary Artery Bypass Grafting on the Beating Heart Evaluated With Integrated Backscatter Kenichi Imasaka, MD, Shigeki Morita, MD, Ichiro Nagano, MD, Munetaka Masuda, MD, Ryuji Tominaga, MD, and Hisataka
More informationDiabetes and Occult Coronary Artery Disease
Diabetes and Occult Coronary Artery Disease Mun K. Hong, MD, FACC, FSCAI Director, Cardiac Catheterization Laboratory & Interventional Cardiology St. Luke s-roosevelt Hospital Center New York, New York
More informationDetection Of Functional Significance of Coronary Stenoses Using Dynamic. Values Of Myocardial Blood Flow And Coronary Flow Reserve
The 2nd International Symposium on Physics, Engineering and Technologies for Biomedicine Volume 2018 Conference Paper Detection Of Functional Significance of Coronary Stenoses Using Dynamic 13 N-Ammonia
More informationJ. Schwitter, MD, FESC Section of Cardiology
J. Schwitter, MD, FESC Section of Cardiology CMR Center of the CHUV University Hospital Lausanne - CHUV Switzerland Centre de RM Cardiaque J. Schwitter, MD, FESC Section of Cardiology CMR Center of the
More informationClinical Appropriateness Guidelines: Percutaneous Coronary Intervention
Clinical Appropriateness Guidelines: Percutaneous Coronary Intervention Appropriate Use Criteria Effective Date: January 2, 2018 Proprietary Date of Origin: 08/27/2015 Last revised: 08/01/2017 Last reviewed:
More informationEcho is Still Strong in Myocardial Viability Wook-Jin Chung, MD, PhD
Echo is Still Strong in Myocardial Viability Wook-Jin Chung, MD, PhD Noninvasive CV Imaging Lab, HF & PAH Clinic Gachon University Gil Hospital Incheon, Korea LV dysfunction Necrosis Ischemia Stunned Hibernating
More informationConflict of Interest Slide
Comparison of six- month clinical outcomes, event free survival rates of patients undergoing enhanced external counterpulsation (EECP) for coronary artery disease in the United States and Europe Ozlem
More informationChronic Total Occlusions. Stephen Cook, MD Medical Director, Cardiac Catheterization Laboratory Oregon Heart & Vascular Institute
Chronic Total Occlusions Stephen Cook, MD Medical Director, Cardiac Catheterization Laboratory Oregon Heart & Vascular Institute Financial Disclosures /see -tee-oh / abbr. Med. Chronic Total Occlusion,
More informationCardiac Viability Testing A Clinical Perspective Annual Cardiac Imaging Symposium. Lisa M Mielniczuk MD FRCPC University of Ottawa Heart Institute
Cardiac Viability Testing A Clinical Perspective Annual Cardiac Imaging Symposium Lisa M Mielniczuk MD FRCPC University of Ottawa Heart Institute 62 year old male Anterior STEMI late presentation, occluded
More informationIschemic heart disease
Ischemic heart disease Introduction In > 90% of cases: the cause is: reduced coronary blood flow secondary to: obstructive atherosclerotic vascular disease so most of the time it is called: coronary artery
More informationPET myocard perfusion & viability Riemer Slart
PET myocard perfusion & viability Riemer Slart Nuclear Medicine Physician Dept. of Nuclear Medicine and Molecular Imaging University Medical Center Groningen, the Netherlands Professor in Molecular Imaging,
More information21st Annual Contemporary Therapeutic Issues in Cardiovascular Disease
21st Annual Contemporary Therapeutic Issues in Cardiovascular Disease Noninvasive Evaluation of Coronary Artery Disease: Anatomical, Functional, Clinical May 5, 2018 Mark Hansen MD FRCPC Cardiologist,
More informationImaging of Coronary Artery Disease: II
Acta Radiológica Portuguesa, Vol.XIX, nº 74, pág. 45-51, Abr.-Jun., 2007 Imaging of Coronary Artery Disease: II Jean Jeudy University of Maryland School of Medicine Department of Diagnostic Radiology Armed
More informationDemonstration of Uneven. the infusion on myocardial temperature was insufficient
Demonstration of Uneven in Patients with Coronary Lesions Rolf Ekroth, M.D., HAkan erggren, M.D., Goran Sudow, M.D., Josef Wojciechowski, M.D., o F. Zackrisson, M.D., and Goran William-Olsson, M.D. ASTRACT
More informationPerioperative Cardiovascular Evaluation and Care for Noncardiac Surgery
Perioperative Cardiovascular Evaluation and Care for Noncardiac Surgery 2008 Update Plus Overview of the Guidelines Concept John Coyle, M.D. October 16, 2008 The History of Medicine As Mountaineering Feat
More informationSPECT or PET for Cardiovascular Screening in High-Risk Patients
SPECT or PET for Cardiovascular Screening in High-Risk Patients Paeng, Jin Chul MD PhD Department of Nuclear Medicine Seoul National University Hospital Contents Recent Development in SPECT and PET Technology
More informationAlthough current methods of cardiopulmonary bypass
Transmyocardial Laser as an Adjunct to Minimally Invasive CABG for Complete Myocardial Revascularization Naresh Trehan, MD, Yugal Mishra, PhD, Yatin Mehta, MD, and Dhan Raj Jangid, MD Escorts Heart Institute
More informationClinical Appropriateness Guidelines: Percutaneous Coronary Intervention
Clinical Appropriateness Guidelines: Percutaneous Coronary Intervention Appropriate Use Criteria Effective Date: March 9, 2019 Proprietary Date of Origin: 08/27/2015 Last revised: 02/01/2018 Last reviewed:
More informationCABG alone. It s enough? / Μόνο η αορτοστεφανιαία παράκαμψη είναι αρκετή;
LV Aneurysm and VSD in Ischaemic Heart Failure / Στεφανιαία νόσος, ανεύρυσμα αριστεράς κοιλίας και VSD CABG alone. It s enough? / Μόνο η αορτοστεφανιαία παράκαμψη είναι αρκετή; THEODOROS KARAISKOS CONSULTANT
More informationIdentification of Hibernating Myocardium With Quantitative Intravenous Myocardial Contrast Echocardiography
Identification of Hibernating Myocardium With Quantitative Intravenous Myocardial Contrast Echocardiography Comparison With Dobutamine Echocardiography and Thallium-201 Scintigraphy Sarah Shimoni, MD;
More information