Introduction
Angina refers to pain or tightness experienced in the chest area (Jevon, 2012). Angina is divided into stable and unstable angina. Stable angina takes place on exertion and occurs when the heart muscle demand for blood is more than the supply. On the other hand, unstable angina may occur in variety of clinical situations. This may include patients having coronary artery disease. Patients having unstable angina usually undergo diagnostic and therapeutic procedures that are used on other coronary artery diseases patients (Braunwald, 1997). Unstable angina emanates from the increase in myocardial oxygen demand or in a reduction in myocardial ...
