Advertisement

What is unstable angina?

Unstable angina is chest pain due to coronary artery disease, which causes unusual chest pain that does not respond to normal angina pain treatments, happens at rest, or feels different than your normal angina pain. Anginal chest pain could be very serious and should be examined by a physician.
Dr. Mehmet Oz, MD
Cardiology (Cardiovascular Disease)
Unlike stable angina, the squeezing chest pain known as unstable angina happens at rest, lasts for more than 30 minutes, and can be life-threatening. In this video, Dr. Oz talks about why angina occurs and the important differences between the two types.


Angina refers to chest pain produced when blood flow to the heart is low. When blood flow is low, the heart gets an inadequate amount of oxygen. This causes feelings ranging from pressure to pain. Angina that occurs on a regular basis, usually related to exercise or physical activity, is called stable angina. Unstable angina refers to angina that does not occur as part of a regular pattern of chest pain. Unstable angina can be new pain in people who have not experienced angina before, or pain that breaks the pattern of stable angina.

Continue Learning about Angina

Angina Pectoris (Chest Pain)
Angina Pectoris (Chest Pain)
What is angina pectoris? Angina is temporary pain or discomfort in the chest that occurs when not enough oxygen-carrying blood reaches your heart musc...
Read More
What is a silent angina attack?
Honor Society of Nursing (STTI)Honor Society of Nursing (STTI)
A special problem happens when coronary heart disease is present but does not cause any chest discom...
More Answers
What is angina?
Univ. of Nev. School of Medicine, Family MedicineUniv. of Nev. School of Medicine, Family Medicine
Angina is chest pain that occurs if an area of your heart muscle doesn’t get enough oxygen. A heart ...
More Answers
Is Angina Related to Heart Attacks?
Is Angina Related to Heart Attacks?

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.