Q. What is the difference between stable angina pectoris and unstable angina pectoris?
Doctor Answer is medically reviewed by SecondMedic medical review team.
Stable angina pectoris and unstable angina pectoris are two types of chest pain caused by narrowing or blockage of the coronary arteries. The main difference between the two is how long symptoms last, as well as their severity.
Stable angina has more predictable characteristics and typically occurs during times of exertion, such as climbing stairs or walking up a hill. It usually lasts no longer than 5 minutes at a time and can be relieved with rest or medication like nitroglycerin tablets that dilate blood vessels. Over time, episodes may become more frequent or intense; however, they will still remain relatively consistent in terms of duration and intensity when provoked by physical activity.
Unstable angina is a concerning medical emergency since it does not follow known patterns for stable angina. It produces symptoms that come on suddenly without warning and can last much longer than five minutes at a time- even up to several weeks in some cases! Additionally, it often doesn’t respond to medications like nitroglycerin which normally helps relieve chest pain associated with stable angina. Unstable Angina requires aggressive treatment to reduce inflammation in the coronary vessels before they become permanently blocked off from damage due to lack of blood flow.
It’s important to note that both forms of Anginal Pectoris have similar signs & symptoms such as chest tightness/pressure, shortness breath, nausea/vomiting & sweating- but the difference comes down whether these occur predictably during physical activities only (Stable) or unpredictably - even when resting (Unstable). So if you experience any type of recurring chest pains/discomfort make sure you discuss this further with your doctor so he/she can diagnose & decide which treatments are best for you!
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