Circulatory Assist Devices (CADs)
Exam Questions & Answers (Grade
A+)
*MECHANICAL CIRCULATORY ASSIST DEVICES (CADs):* -
correct answer ✅- Used to *decreased cardiac work & improve
organ perfusion* in pts with HF *when conventional drug therapy is
no longer adequate*.
- Include *Intraaortic Balloon Pump (IABP)* & left or right
*Ventricular Assist Device (VAD)*.
Type of device used depends on the extent and nature of the heart
problem. CADs *provide interim support in 3 types of situations:*
- *(1)* the left, right, or both ventricles require support while
*recovering from acute injury* (postcardiotomy);
- *(2)* the pt must be *stabilized before surgical repair* of the
heart (ruptured septum);
- *(3)* the heart has failed, and the pt is *awaiting heart
transplantation*.
All CADs:
- decrease cardiac workload
- increase myocardial perfusion
, Circulatory Assist Devices (CADs)
Exam Questions & Answers (Grade
A+)
- augmented circulation
*INTRAAORTIC BALLOON PUMP (IABP):* -
correct answer ✅- provides *temporary circulatory assistance* to
the sick heart by reducing afterload (via reduction in systolic
pressure) and augmenting the aortic diastolic pressure --> results in
improved coronary blood flow.
*Consists of:*
- a sausage-shaped balloon,
- a pump that inflates and deflates the balloon,
- a control panel for synchronizing the balloon inflation to the
cardiac cycle,
- fail-safe features.
- the balloon is inserted percutaneously or surgically into the
femoral artery --> moved toward the heart --> placed in the
descending thoracic aorta just below the left subclavian artery and
above the renal arteries. --> after placement, x-ray confirms
position.
Exam Questions & Answers (Grade
A+)
*MECHANICAL CIRCULATORY ASSIST DEVICES (CADs):* -
correct answer ✅- Used to *decreased cardiac work & improve
organ perfusion* in pts with HF *when conventional drug therapy is
no longer adequate*.
- Include *Intraaortic Balloon Pump (IABP)* & left or right
*Ventricular Assist Device (VAD)*.
Type of device used depends on the extent and nature of the heart
problem. CADs *provide interim support in 3 types of situations:*
- *(1)* the left, right, or both ventricles require support while
*recovering from acute injury* (postcardiotomy);
- *(2)* the pt must be *stabilized before surgical repair* of the
heart (ruptured septum);
- *(3)* the heart has failed, and the pt is *awaiting heart
transplantation*.
All CADs:
- decrease cardiac workload
- increase myocardial perfusion
, Circulatory Assist Devices (CADs)
Exam Questions & Answers (Grade
A+)
- augmented circulation
*INTRAAORTIC BALLOON PUMP (IABP):* -
correct answer ✅- provides *temporary circulatory assistance* to
the sick heart by reducing afterload (via reduction in systolic
pressure) and augmenting the aortic diastolic pressure --> results in
improved coronary blood flow.
*Consists of:*
- a sausage-shaped balloon,
- a pump that inflates and deflates the balloon,
- a control panel for synchronizing the balloon inflation to the
cardiac cycle,
- fail-safe features.
- the balloon is inserted percutaneously or surgically into the
femoral artery --> moved toward the heart --> placed in the
descending thoracic aorta just below the left subclavian artery and
above the renal arteries. --> after placement, x-ray confirms
position.
