What is the prevalence of significant unstable angina?

Updated: Oct 01, 2020
  • Author: Walter Tan, MD, MS; Chief Editor: Eric H Yang, MD  more...
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Among patients presenting with unstable angina, approximately 15% have 1-vessel CAD, 35% have 2-vessel CAD, and 50% have 3-vessel CAD. The incidence of left main disease is roughly 5-10%. The rate of thrombus detected at coronary angiography varies widely, ranging from less than 10% among those with chest pain in the previous month to more than 50% among those with rest angina in the preceding 24 hours.

This high prevalence of significant disease has led some to advocate routine angiography, whereas the imperfect ability to predict who will develop long-term adverse events has encouraged a tendency toward so-called permissive revascularization.

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