This document discusses 3 types of diagnostic procedures for the cardiovascular system: stress tests, Holter monitors, and measuring cardiac enzymes via blood testing. It describes 3 common types of stress tests - treadmill tests, dobutamine or adenosine tests, and stress echocardiograms. It also explains how Holter monitors can continuously monitor heart activity over hours or days. Finally, it details how measuring levels of cardiac enzymes in the blood can indicate heart muscle damage from events like heart attacks.