Final answer:
Stable angina is often exercise-induced and relieved by rest or nitroglycerin, while unstable angina can occur without exertion and may signal an impending heart attack, requiring emergency care. Both are due to reduced blood flow to the heart but present different risks and management strategies.
Step-by-step explanation:
Difference Between Stable and Unstable Angina
Stable angina and unstable angina are both conditions that involve angina pectoris, which is chest pain resulted from reduced blood flow to the heart muscle, causing it to be deprived of oxygen. Stable angina is typically triggered by physical exertion and is relieved by rest or medication like nitroglycerin, which widens the coronary arteries to improve blood flow. On the other hand, unstable angina can occur unexpectedly, even at rest, can last longer, be more severe, and is a warning sign of a possible impending heart attack. Immediate medical intervention is crucial for unstable angina.
Both forms of angina are caused by a partial blockage of the coronary arteries due to the buildup of plaque. The primary goal in treating angina is to alleviate discomfort and slow the progression of the underlying cause, such as atherosclerosis. Misdiagnosis can be a risk factor, particularly in women whose symptoms can present differently than men's. Acute Myocardial Infarction (MI) can present similar symptoms to angina pectoris but is a more severe condition requiring emergency treatment.