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IABP
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What is counterpulsation?
Balloon inflation in diastole and deflation in early systole
What is the aim of IABP?
Increase myocardial oxygen supply
Decrease myocardial oxygen demand
Some indications for IABP?
LV Failure (low EF/hypertension/BNP increase)
Mechanical Complications to MI
Secondary complications to MI (renal failure)
Unstable angina
Support for high risk PTCI (Left main stem)
Bridge to bypass
Contra-indications for IABP?
Aortic Valve insufficiency - Severe AVR will only get worse
Aortic dissection
Aortic Aneurysm
Severe PVD (can not manourver balloon up patients arteries)
Irreversible brain damage
Cerebral aneurysm
Why is determining the correct balloon size important?
Do not want to block off carotid or renal arteries
What are the main effects of IABP?
Increase coronary artery perfusion
Increase myocardial oxygen supply
Decrease myocardial oxygen demand
Reduces afterload
Increases MAP
Decreases work load on lungs (lowers Pulmonary artery pressure)
When is the balloon set to inflate?
On the dicrotic notch
If the dicrotic notch can not be found/seen, what should the trigger be set to?
R wave
Why is the balloon inflated during diastole?
Increases pressure difference between the aorta and the left ventricle
This results in an increased coronary blood flow and myocardial oxygen supply
Draw the IABP curve indicating diastolic augmentation
Isn't it pretty ;-)
What are the haemodynamic effects of deflation of the balloon?
Decreased afterload
Decreased cardiac work
Decreased myocardial oxygen consumption
Increased cardiac output
What are the three different triggers for IABP?
ECG - R wave
Pressure - Dicrotic notch
Pacing - Pacing spike
What are the effects of late timing of inflation?
Diastolic augmentation is reduced
Author:
Westy50
ID:
190662
Card Set:
IABP
Updated:
2012-12-27 15:21:23
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IABP
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IABP
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