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18
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IAB Insertion / CARDIOSAVE Operation
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Cardiac Assist
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theory of Counterpulsation therapy
Inflation: increases supply of oxygen
to the myocardium.
Deflation: decreases demand for oxygen
by the left ventricle.
How it works
•
Balloon inflates at onset of diastole
(when aortic valve closes)
•
Displaces blood, causing an increase
in aortic pressure
Benefits
•
Increases coronary artery perfusion
•
Increases mean arterial pressure
How it works
•
Balloon deflates just prior to systolic
ejection (before aortic valve opens)
•
Results in a rapid decrease in aortic
pressure
Benefits
•
Decreases afterload
•
Decreases cardiac workload
•
Increases cardiac output
CARDIOSAVE
OPERATION
