Every heart muscle cell, or cardiomyocyte, is studded with tiny, intricate structures called dyads. The dyads are like orchestra conductors: They coordinate incoming electrical signals with release of ...

After a heart attack, the heart struggles to recoup and maintain energy. One-third of patients develop heart failure as a ...

The heart’s apex is located at the bottom tip of the heart. It consists of the left and right ventricles. Conditions affecting the heart’s apex include myocarditis, cardiomyopathy, and heart attack.

Accurately measuring electrical signals and calcium levels in the heart can lead to earlier treatment of potentially fatal conditions, such as heart attack or congestive heart failure. Calcium plays ...