KPDS 2001-2 Soru=24

One can infer from the text that that -----.

Each year thousands of people are diagnosed with congestive
heart failure - a condition in which a weakened heart can't
pump much blood as the body needs. Drugs like beta-blockers
help stabilize many patients in the earliest stages of the
disease. But there aren't a lot of options for folks in the later
stages. Heart transplants are one solution, but they are short
in supply. It is such good news to hear that another type of
mechanical pump, called a left ventricular assist device, may
be a viable alternative. Instead of replacing the heart entirely,
the device attaches to the organ's left main chamber, boosting
its output. The device is twice as likely as drugs to keep
patients alive after one year.