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In unstable angina, symptoms related to decreased blood flow to the heart may appear on rest or on minimal exertion. [4] The symptoms can last longer than those in stable angina, can be resistant to rest or medicine, and can get worse over time. [7] [8] The cardinal symptom of critically decreased blood flow to the heart is chest pain ...
Unstable angina (UA) (also "crescendo angina"; this is a form of acute coronary syndrome) is defined as angina pectoris that changes or worsens or begins suddenly at rest. [12] Unstable angina is a medical emergency and requires urgent medical treatment from a doctor. [5] It has at least one of these three features: [13]
The most common symptom is chest pain or discomfort that occurs regularly with activity, after eating, or at other predictable times; this phenomenon is termed stable angina and is associated with narrowing of the arteries of the heart. Angina also includes chest tightness, heaviness, pressure, numbness, fullness, or squeezing. [28]
Coronary vasospasm classically produces chest pain at rest, also known as variant angina (vasospastic angina or Prinzmetal's angina). [5] Chest pain is more common at certain times of the day, usually from late night to early morning. [6] These episodes can be accompanied by nausea, vomiting, cold sweating, and even syncope.
Angina may be stable or unstable. Unstable angina is most often associated with emergent, acute coronary syndromes. [20] Angina is typically located below the sternum. [4] Individuals experiencing angina characterize the pain in different ways, but the pain is usually described as crushing, squeezing, or burning. [7]
Variant angina, also known as Prinzmetal angina, vasospastic angina, angina inversa, coronary vessel spasm, or coronary artery vasospasm, [2] is a syndrome typically consisting of angina (cardiac chest pain). Variant angina differs from stable angina in that it commonly occurs in individuals who are at rest or even asleep, whereas stable angina ...
CAD symptoms vary from none, to chest pain only when exercising (stable angina), to chest pain even at rest (unstable angina). It can even manifest as a myocardial infarction; if blood flow to the heart is not restored within a few hours, whether spontaneously or by medical intervention, the blood-deprived part of the heart becomes necrotic ...
unstable angina; after percutaneous transluminal coronary angioplasty (PTCA) after cardiac surgery 'neurogenic' stunned myocardium following an acute cerebrovascular event such as a subarachnoid hemorrhage; in patients undergoing chronic hemodialysis, chronic myocardial stunning may lead to heart failure