Commander Raydor was diagnosed with cardiomyopathy. One of the treatment options discussed was an LVAD (left ventricular assist device), which is similar to an artificial heart, but instead of replacing the heart, the heart is left in place; the VAD is essentially a pump that assists a weak heart in pumping blood. At one point, Raydor says that if she chooses the LVAD, she'll be "off the transplant list". That is not true: a VAD can be used as permanent "destination therapy" or as a temporary "bridge to transplantation" to keep a patient alive until a suitable donor heart is available (which is actually the most common use).