Stable vs Unstable angina?

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deleted909933

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So this looked like a stable angina to me. chest pain onset due to exertion & relief w/ sitting down/resting.
However, the answer was unstable angina b/c of the prompt "he had never had a pain like that before." = new in onset
so the professor said, because it is new in onset, there was probably an atherosclerotic plaque that ruptured and created a thrombus that incompletely obstructed his BF, causing an unstable angina.
After this event, he may have a repeated stable or unstable angina depending on whether it is due to exertion or not & relieved with rest or not.

I have never read this in my text book that if it is new in onset, it must be unstable angina regardless of the fact that patient had the chest pain on exertion & was relieved w/ rest.
Will this also be true for Step 1?
If I see a patient who had chest pain on exertion, but is experiencing it for the first time ever, is the answer unstable angina?

Thank you for helping me clarify this confusion!

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New onset angina is unstable angina by definition, I have read this everywhere.
 
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