Unstable angina non ST elevation myocardial infarction classification

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Classification

Braunwald clinical classification of unstable angina

Severity	Clinical Circumstances
	A (Secondary Angina)	B (Primary Angina)	C (Postinfarction Angina)
Class I- New onset of severe angina or accelerated angina; no rest pain	IA	IB	IC
Class II- Angina at rest within past month but not within preceding 48hours (angina at rest, subacute)	IIA	IIB	IIC
Class III-Angina at rest within 48hours (angina at rest, subacute)	IIIA	IIIB-TPos IIIB-TNeg	IIIC

• Secondary Angina = Unstable angina secondary to a clearly identified condition extrinsic to the coronary vascular bed that has intensified myocardial ischemia
• Primary Angina = Uunstable angina pectoris in the absence of an extracardiac condition that has intensified ischemia
• Postinfarction Angina = Unstable angina within the first 2 weeks after a documented acute myocardial infarction

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