IABP Timing & Fidelity. Pocket Reference Guide

Transcription

1 IABP Timing & Fidelity Pocket Reference Guide

2 Correct IABP Timing A = One complete cardiac cycle R B = Unassisted aortic end diastolic pressure P T C = Unassisted systolic pressure D = Diastolic augmentation Q S C D F E = Reduced aortic end diastolic pressure F = Reduced systolic pressure B A E

3 INFLATION At the onset of diastole, IAB inflation occurs, giving rise to sharp V on arterial waveform. Effect: Increased coronary perfusion DEFLATION Occurs at end of diastole prior to systole resulting in reduction of aortic end-diastolic and systolic pressures. Please Note: R-Wave deflation may provide more effective support for patients experiencing arrhythmias Effects: Decreased afterload Decreased cardiac work Decreased myocardial oxygen consumption Increased cardiac output

4 EARLY INFLATION Incorrect IABP Timing Inflation of the IAB prior to aortic valve closure. Waveform Characteristics: Inflation of IAB prior to dicrotic notch. Diastolic augmentation encroaches onto systole, (may be unable to distinguish). Unassisted systole Diastolic Augmentation Assisted Systole Physiologic effects: Potential premature closure of the aortic valve. Potential increase in LVEDV and LVEDP or PCWP. Assisted Aortic End Diastolic Pressure Increased left ventricular wall stress or afterload. Aortic regurgitation. Increased MV0 2 demand.

5 LATE INFLATION Inflation of the IAB markedly after closure of the aortic valve. Diastolic Augmentation Waveform Characteristics: Inflation of IAB after the dicrotic notch. Absence of sharp V. Physiologic Effects: Sub-optimal coronary artery perfusion. Dicrotic Notch Assisted Systole Assisted Aortic End Diastolic Pressure

6 EARLY DEFLATION Incorrect IABP Timing Premature deflation of the IAB during the diastolic phase. Waveform Characteristics: Deflation of IAB is seen as a sharp drop following diastolic augmentation. Sub-optimal diastolic augmentation. Assisted aortic end diastolic pressure may be equal to or less than the unassisted aortic end diastolic pressure. Assisted systolic pressure may rise. Physiologic Effects: Sub-optimal coronary perfusion. Potential for retrograde coronary and carotid blood flow. Sub-optimal after load reduction. Increased MV0 2 demand. Diastolic Augmentation Assisted Aortic End Diastolic Pressure Assisted Systole Unassisted Aortic End Diastolic Pressure

7 LATE DEFLATION Waveform Characteristics: Assisted aortic end diastolic pressure may be equal to the unassisted aortic end diastolic pressure. Rate of rise of assisted systole is prolonged. Diastolic augmentation may appear widened. Physiologic Effects: Afterload reduction is essentially absent Increased MV0 2 consumption due to the left ventricle ejecting against a greater resistance and a prolonged isovolumetric contraction phase IAB may impede left ventricular ejection and increase the afterload Unassisted Systole Widened Appearance Prolonged Rate of rise of Assisted Systole Assisted Aortic End Diastolic Pressure

8 FIDELITY IAB CATHETER Arterial Pressure Monitoring through the IAB Inner Lumen Transducer Setup Inner Lumen Care

9 Transducer Setup 5' Preferred 8' Maximum A Minimize length of pressure tubing: B Use only high stiffness pressure tubing. (as provided by Datascope or Abbott) C Do not use a damping device. (e.g. R.O.S.E. resonance overshoot eliminator) D Use gravity fill to minimize air bubbles. E Elevate flush bag above transducer

10 25CC J Inner Lumen Care A Before pumping, after insertion, gently aspirate & discard 3cc of blood & manually flush immediately with 3 5cc of flush solution. Profile 8Fr. 25cc (3 5cc) B A 3cc/hour continuous flow through the inner lumen is recommended. C If the central lumen becomes damped, aspirate & discard 3cc of blood fast flush to clear the pressure tubing continue flushing for at least 15 seconds. D Do not sample blood from the inner lumen

11 Clinical Reference Sizing Chart 6 50 cc 40 cc Approx. Height Over 6' (183 cm) Approx. Height From 5'4" - 6' (163 cm cm) 34 cc 40 cc 50 cc 5 34 cc Approx. Height From 5'-5'4" (152 cm cm) 25 cc 4 25 cc Approx. Height Less than 5' (152 cm) 3 2

12 Datascope Corp. 15 Law Drive Fairfield, NJ (tel.) (tel.) (fax) (fax) P/N R2 innovation is the best medicine