Background Mechanical stress on the heart is commonly considered the sole stimulus explaining the synthesis and release of ...

The enzymes troponin I and troponin T are normal proteins that are important in the contractile apparatus of the cardiac myocyte. The proteins are released into the circulation between 3 and 4 ...

Intracellular calcium within the cardiac myocytes is increased by digoxin, resulting in increased inotropy, or contractility. Digoxin toxicity causes hyperkalemia, or high potassium. The sodium ...