Unstable Angina (Acute Coronary Syndrome)
Attacks of angina that are getting worse, occur at rest, or are lasting more than 15 minutes, are all symptoms of Unstable angina and may indicate the development of myocardial infarction (a heart attack).
Unstable Angina
- Often occurs at rest, and represents a change in the usual pattern of “typical” angina.
- Symptoms are more intense
- Symptoms are of longer duration (e.g. >15 minutes) than one's usual angina.
- Often degenerates into myocardial infarction (and is therefore considered a medical emergency)!
Unstable angina differs from a myocardial infarction (heart attack) only in that the extent of ischemia (inadequate oxygen supply to the heart muscle) is not sufficient to produce death of heart muscle. However, it is considered a medical emergency because it can rapidly evolve into a full heart attack!
Unstable angina (Acute Coronary Syndrome)is caused by platelet aggregation that occurs at fractured atherosclerotic plaques.
Remember, Unstable angina is a medical emergency, and if you believe you are experiencing Unstable angina, then go to the nearest emergency room.
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