Fluorescent Angiography: Practical uses in the Clinical Setting
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1 Fluorescent Angiography: Practical uses in the Clinical Setting Charles Andersen MD, FACS, MAPWCA Chief Vascular/Endovascular/ Limb Preservation Surgery Service (Emeritus) Chief of Wound Care Service Madigan Army Medical Center Clinical Professor of Surgery UW, USUHS
2 Disclosures No relevant financial relationship reported
3 Perspective Practical Uses in the clinical setting Fluorescent Angiographic Studies provide information that can be useful in the clinical setting when combined with other clinical information Fluorescent Angiography has become an important tool in our Wound Care and Limb Preservation Service
4 Traditional measurement of Tissue Perfusion Clinical Judgment Physical exam ABIs, Toe Pressures, Toe Wave Forms Forefoot PVR Duplex scan tcp02 SPP
5 Measurement of Tissue Perfusion Current methods utilized to evaluate tissue perfusion are often limited by medial calcinosis scarring wounds prior amputations infection Current methods can be technically challenging, costly and time consuming and don t measure global perfusion of the foot Fluorescence Angiography offers an additional option to measure tissue perfusion
6 Clinical Role of Fluorescence Angiography Utilized in outpatient clinic Is there adequate perfusion to heal a wound Does the patient require revascularization to heal a wound or prior to a minor foot amputation? Was revascularization successful in improving perfusion to the foot? Predict what level of minor foot amputation will heal? Utilized in OR üspy assisted Amputation üprevention of suture line complications
7 Fluorescence Angiography Visualize and quantitate micro-circulation
8 Fluorescence Angiography Fluorescent dye ICG) is injected IV The injected agent lights up blood flowing through the veins and arteries in real time, and the camera captures live images of the patient s vasculature. These images can be captured on a computer screen, analyzed and saved and printed for medical reference.
9 Practical Uses in the Clinical Setting Heel Ulcers Fluorescent Angiography provides perfusion assessment of the Heel that can t be obtained with traditional methods of measuring perfusion
10 Perfusion Assessment in Heel Ulcers Measurement of tissue perfusion can help assess the healing potential in patients with heel ulceration Traditional methods of measuring tissue perfusion are a poor indicator of heel perfusion. Fluorescence angiography can measure tissue perfusion in a heel ulcer Malik R, Pinto P, Bogaisky M, et al. Older adults with heel ulcers in the acute care setting: frequency of noninvasive vascular assessment, surgical intervention, and 1-year mortality. J Am Med Dir Assoc. 2013;14(12):
11 Heel Ulcers - Heel Angiosome The heel is a unique angiosome due to it having two sources of arterial blood supply Clemens MW, Attinger CE. Angiosomes and wound care in the diabetic foot. Foot Ankle Clin. 2010;15(Clemens MW, Attinger CE. Angiosomes and wound care in the diabetic foot. Foot Ankle Clin. 2010;15(3):439 posterior tibial artery peroneal artery no direct artery to artery connections Clemens MW, Attinger CE. Angiosomes and wound care in the diabetic foot. Foot Ankle Clin. 2010;15(3):
12 Heel Ulcers Orphan Heal Syndrome Regional malperfusion of the heel has been termed Orphan Heel Syndrome Most common in patients with diabetes and/or renal failure The role of fluorescein angiography in the management of orphan heel syndrome Authors: Nicole Byerley, DPM*, Col (Ret) Charles A. Andersen, MD, FACS, FAPWCA1, Mario N. Ponticello, DPM, FACFAS, FAPWCA2, LTC, MC, Peter Kreishman, MD3 The Journal of Diabetic Foot Complications, 2016
13 Heel Ulcers Identification of Ischemia A palpable DP pulse doesn t r/o heel ischemia Normal ABI or toe pressures do not predict heel ischemia ABI measure the pressure where the cuff is located. Toe pressures Anterior tibial perfusion Patients with heel ulcers having arteriography 14% - severe malperfusion about the heel 33% undergoing endovascular intervention Taylor Z. The diagnostic triad of orphan heel syndrome: posterior tibial and peroneal artery occlusive disease, poorly controlled diabetes and renal failure. J Vasc Surg 2013;58:565.
14 Case Study 81 year- old female with a history of poorly-controlled insulindependent DM type II with neuropathy with a painful right posterolateral heel ulceration that had been present for three weeks Physical Exam è non-palpable pedal pulses ABI 0.5
15 Presentation
16 Pre Revascularization Fluorescence Angiogram Pre revascularization No fluorescence in wound bed and minimal inflammatory response Heel demonstrates blotchy uptake
17 Pre Revascularization Fluorescence Angiogram
18 Revascularization An arteriogram demonstrated popliteal occlusion and severe infra-popliteal disease Popliteal stent and angioplasty of the tibial peroneal trunk The only runoff vessel was a peroneal artery reconstituting the distal dosalis pedis artery. The posterior tibial artery was totally occluded Indirect revascularization Is there perfusion to the heel?
19 Revascularization
20 Revascularization
21 Revascularization Post Stenting, arterial flow to the foot was improved with a triphasic dorsalis pedis arterial signal and after several days a monophasic posterior tibial signal. Question what is the perfusion to the heel Fluorescence angiography demonstrated improved perfusion to the heel with an improved inflammatory response and increased uptake to the wound bed.
22 Post Revascularization - Fluorescence Angiogram
23 One Month Post Revascularizations
24 Changes in Perfusion Global Ingress Wound Ingress 6/21/ /22/ /01/
25 Healed Ulcer Ulcer healed 6 weeks post stenting
26 Practical use Fluorescence Angiography in Heel Ulcers Documented severe ischemia of heel and the need for revascularization Documented adequate perfusion to the heel following indirect revascularization With indirect revascularization, documented the increased perfusion over time Appropriate identification of regional ischemia and revascularization can prevent major amputation or support calcanectomy in more severe ulceration
27 Practical Uses in the Clinical Setting Digital Amputations Significant incidence of readmission and revision to higher levels of amputation following digital amputations Significant incidence of suture line complications Fluorescence angiography pre and intra op may decrease these complications Predictors of hospital readmissions after lower extremity amputations Andersen et al publication pending
28 Case Study - Hallux Amputation 79 y/o diabetic male with multiple comorbidities admitted with Gangrene Osteomyelitis Cellulitis right great toe and dorsal foot 2-3 week history of pain and swelling Poor historian not sure of trauma History of DVT with chronic venous insufficiency PAD Atrial fibrillation
29 Case Study - continued Positive blood cultures for MRSA Started on broad spectrum IV antibiotics with resolution of cellulitis on dorsum of foot Vascular assessment Fluorescence angiography Right hallux amputation
30 Pre-op
31 Pre-op
32 Pre-op MRI Abscess surrounding the flexor hallucis longus Tendon is concerning for infective tenosynovitis Moderate osteoarthritis of the right foot
33 Pre op Vascular Assessment ABIs non compressible vessels with ABIs greater than 1.5 Biphasic wave forms at right ankle Right toe pressure not obtainable
34 Pre op Fluorescence Angiography
35 Intra op Fluorescence Angiography
36 Amputation Flap revision following intra-op Fluorescence Angiography
37 Amputation Amputation following excision of ischemic distal flap
38 Amputation Flap Closure
39 Fluorescent Angiography Following Closure
40 Post Op 2 days post op 5 days post
41 Practical Uses in the Clinical Setting TMA Historically TMAs have up to a 50% incidence of suture line complications Can the use of Fluorescence Angiography decrease the suture line complication rate?
42 Case Study - TMA Severe poorly controlled diabetes S/P hallux amputation with severe deformity with recurrent ulceration and cellulitis Vascular studies and fluorescent angiography demonstrated adequate perfusion to heal a TMA Elective TMA
43 Pre op Post Hallux amputation with deformity of residual toes exposed hardware and chronic osteomyelitis
44 Fluorescent Angiography Assisted Amputations
45 Fluorescent Angiography Assisted Amputations
46 Suture Line Modification
47 TMA
48 Ten days post op
49 Two months post op
50 Conclusions Fluorescence Angiography has become an important component of our Limb Preservation/Wound Care practice Fast and accurate evaluation of tissue perfusion of the foot Fluorescence Angiography can assess the need for revascularization and document the post procedure results Assesses perfusion to determine amputation level Help prevent suture line complications with amputations
51 References Braun JD, Trinidad-Hernandez M, Perry D, Armstrong DG, Mills JL. Early quantitative evaluation of indocyanine green angiography in patients with critical limb ischemia. J Vasc Surg 2013;-:1-6. Gurtner GC, Jones GE, Neligan PC, Newman MI, Phillips BT, Sacks JM, Zenn MR. Intraoperative laser angiography using the SPY system: review of the literature and recommendations for use. Ann Surg Innov Res Jan 7;7(1):1. Perry D, Bharara M, Armstrong, DG, Mills, J. Intraoperative Fluorescence Vascular Angiography: During Tibial Bypass. Journal of Diabetes Science and Technology. Volume 6, Issue 1, January Taylor Z. The diagnostic triad of orphan heel syndrome: posterior tibial and peroneal artery occlusive disease, poorly controlled diabetes and renal failure. J Vasc Surg 2013;58:565. The role of fluorescein angiography in the management of orphan heel syndrome Authors: Nicole Byerley, DPM*, Col (Ret) Charles A. Andersen, MD, FACS, FAPWCA1, Mario N. Ponticello, DPM, FACFAS, FAPWCA2, LTC, MC, Peter Kreishman, MD3 The Journal of Diabetic Foot Complications, 2016
52 THANK YOU! Mt. Rainier at Sunrise Dr. Charles Andersen
53 Fluorescent Angiography: Practical uses in the Clinical Setting Charles Andersen MD, FACS, MAPWCA Chief Vascular/Endovascular/ Limb Preservation Surgery Service (Emeritus) Chief of Wound Care Service Madigan Army Medical Center Clinical Professor of Surgery UW, USUHS
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