What is the prognosis of undiagnosed unstable angina?

Updated: Oct 01, 2020
  • Author: Walter Tan, MD, MS; Chief Editor: Eric H Yang, MD  more...
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Answer

Patients in whom the diagnosis of myocardial infarction (MI) or unstable angina has been missed and those who are sent home from the emergency department (ED) have, respectively, a 2-fold and a 1.7-fold increased risk of death, compared with those who were admitted to the hospital. [23] This a public health issue. Indeed, up to 20% of the millions of dollars awarded in malpractice suits against ED practitioners is for missed acute coronary syndrome (ACS). [23]

A related study reported that nearly one third (32%) of patients with ACS have normal levels (26 </ref>The majority of these patients had unstable angina. In addition, although the death rates of patients with normal hs-cTnT levels were significantly lower 1 year later than those of patients with elevated hs-cTnT levels, their acute MI rates were significantly higher.


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