Intra-aortic balloon pump - ANSWER-1. Mechanical cardiac assist device that
benefits patients with actual or potential life-threatening circulatory
problems.
What is the purpose of the intra atrial balloon counterpulsation? - ANSWER-1.
Reduces the resistance to left ventricular ejection and increases coronary
and systemic blood flow.
2. Circulatory support provided by a balloon inserted into the thoracic aorta,
inflated during diastole and deflated during systole.
What is the purpose of inflation and how does it affect pressure? - ANSWER-
At the onset of diastole, increases aortic diastolic pressure to a level higher
than systolic pressure
What does the second dip represent? - ANSWER-1. Relates to balloon
deflation just before the next systole.
, 2. Should also be U shaped.
Trigger - ANSWER-1. Physiologic signal from the patient to the computer
within the IABP console.
2. Used to indicate the beginning of cardiac cycles and also assesses the
length of R-R intervals.
When does deflation occur? - ANSWER-Occurs at the end of isovolumetric
contraction just before opening of the aortic valve and maintained until the
onset of diastole.
What does the first hump represent? - ANSWER-Normal peak systolic
pressure.
What does the first dip represent? - ANSWER-1. Correlates with aortic valve
closure.
2. Should be V shaped.
What does the second hump represent? - ANSWER-1. Termed diastolic
augmentation or peak diastolic pressure (PDP).
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