تعريف unstable angina في الإنجليزية الإنجليزية القاموس.
Severe and unpredictable angina in which the severity, frequency, or length of angina attacks suddenly increases Attacks may occur during periods of exercise or rest It results from the sudden or complete blockage of an artery in the heart Unstable angina is part of acute coronary syndrome
chest pain that occurs even when subject is at rest; an indication of progressive coronary artery occlusion, often a precursor to myocardial infarction
Progressive increase in the number, severity, or duration of chest pain episodes or a new episode that is brought on by physical activity or that occurs at rest; frightening and disabling condition that can lead to a heart attack; type of chest pain that is more intense, lasts longer, is brought on by less effort, occurs at rest, or is a combination of these factors and is triggered by decreased blood flow to an area of the heart due to a change in a lesion Unstable angina requires hospitalization and treatment because approximately one-third of patients will suffer a heart attack within three months of an episode