A study just published in JAMA Internal Medicine finds that hospitals can administer a simple walking test to evaluate the likelihood of functional decline in older adults following a heart attack ...

and the function of the heart, which required days for recovery. Synthesizing more ATP is limited by the production of ribose, a simple sugar the cells make very slowly. The researchers provided ...

While heart attacks severely compromise cardiac function, the heart typically continues beating, though its pumping efficiency may diminish. Critically, the electrical signaling system controlling ...