Formerly,ventricular Assist Devices Were Reserved for Those Patients Who Could

Formerly,ventricular assist devices were reserved for those patients who could not be weaned from CPB after open-heart operations,or who had end-stage cardiomyopathy.Current indications and choices have expanded and a variety of active and passive devices are available to support the circulation for short-,intermediate-,and long-term support.Select the statement that best describes a passive method of assisted circulation.

A) The latissimus dorsi muscle is wrapped around the heart and paces the heart with natural electrical stimulation in patients who are not candidates for transplant.
B) The intra-aortic balloon pump counterpulses with diastole to flood the aorta with oxygenated blood in patients who are not candidates for CPB.
C) Ventricular assist devices augment blood flow by diverting blood from the systemic circulation into the ventricles for patients waiting for a suitable donor heart.
D) The Thoratec HeartMate LVAD is an axial flow permanent replacement heart for patients who are not candidates for heart transplant surgery.

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