Unstable Angina Quiz

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Osler Jay Justo Guzon

Osler Jay Justo Guzon, MD (Cardiology)

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Learn more about Unstable angina

Content updated on Sep 20, 2022

What is unstable angina?

These are often grouped together under the term "Acute Coronary Syndrome " (ACS) and is potentially life-threatening. This results from a blood vessel supplying the heart being blocked, usually by a blood clot. Risk factors include high cholesterol, high blood pressure, sedentary lifestyle diabetes and family history of cardiovascular diseases (e.g. stroke, heart disease).

Symptoms of unstable angina

  • Chest pain

  • Left-sided chest pain

  • Stomach pain or tummy ache in a specific place

  • Fatigue

  • Similar chest pain to the previous heart attack

  • Chest discomfort with exercise

  • Cold sweats

  • Hands and feet are cold

Questions your doctor may ask to check for unstable angina

Your doctor may ask these questions to diagnose unstable angina

  • Do you have any chest pain?

  • Do you have left sided chest pain?

  • Do you have abdominal (stomach) pain in any particular location?

  • Do you feel fatigued?

  • Do you have same type of chest pain as your previous heart attack?

Treatment for unstable angina

This is a medical emergency and requires prompt medical attention in the hospital. Treatment aims to restore blood supply to the heart with medication to reduce blood clot size, prevent clot formation and reduce the workload of the heart. Surgery or procedures are performed to open up the blocked artery supplying the heart, or reroute blood around the blocked area.

View the symptoms of Unstable angina


  • Munger TM, Oh JK. Unstable angina. Mayo Clin Proc. 1990 Mar;65(3):384-406. doi: 10.1016/s0025-6196(12)62539-7. PMID: 2179645.


  • Braunwald E, Morrow DA. Unstable angina: is it time for a requiem? Circulation. 2013 Jun 18;127(24):2452-7. doi: 10.1161/CIRCULATIONAHA.113.001258. PMID: 23775194.


  • Wehrmacher WH, Bellows R. Unstable angina. Compr Ther. 2004 Spring;30(1):6-9. doi: 10.1007/s12019-004-0018-y. PMID: 15162586.


  • Wallace WA, Richeson JF, Yu PN. Unstable angina pectoris. Clin Cardiol. 1990 Oct;13(10):679-86. doi: 10.1002/clc.4960131002. PMID: 2257708.


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