IABP THERAPY TEST WITH COMPLETE SOLUTIONS
Late deflation Correct Ans-the balloon is inflated during the beginning of ventricular
systole. This increases the work load of trhe left ventricle. Very harmful for the patient.
Early inflation Correct Ans-the balloon in inflated before aortic valve closure. Causes reflux
of blood into the left ventricle. Decrreases cardiac output and increases SVR, Harmful.
Suboptimal augmentation Correct Ans-a result of late inflation, there is minimal
displacement of blood back toward the coronary arteries.
vacuum effect Correct Ans-a result of early delfation. Afterload reduction is lost. This
occurs because by the time the aortic valve opens, the pressures in the aorta has equalized.
Transport considerations- patient decompensation Correct Ans-Watch for patient
decompensation during balloon purges. Be prepared to treat patient.
Transport considerations- power failure Correct Ans-In the event of power failure, the
balloon needs to be manually pumped every 30 minutes to prevent thrombus formation on
the balloon.
Transport considerations- balloon too low Correct Ans-Watch urinary output and distal
pulses closely in transport- renal arteries are occluded.
Transport considerations- balloon too high Correct Ans-Loss of left radial pulse indicates
the balloon has migrated upward covering the subclavian artery.
Goals of IABP therapy Correct Ans--Decrease the work of the heart
-Decrease myocardial oxygen demand
-Increase coronary perfusion
-Improve cardiac output
