Stress cardiomyopathy other diagnostic studies

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Unstable angina/non ST elevation myocardial infarction in Stress (Takotsubo) Cardiomyopathy

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

Overview

Other Diagnostic Studies

Coronary Angiography

Stress cardiomyopathy can mimic an acute MI, mainly anterior MI, since the clinical presentation, ECG and laboratory findings are similar. Hence, coronary angiography is considered a great diagnostic modality to differentiate between the two diagnoses. A normal angiography or absence of substantial coronary stenosis supports the diagnosis of stress cardiomyopathy.[1]

Cardiac Catheterization

When patients with stress cardiomyopathy undergo cardiac catheterization, the following findings are usually reported:[2][3]

Myocardial Biopsy

Myocardial biopsy, although not necessary for diagnosis, can distinguish between stress cardiomyopathy and MI. The histological findings on myocardial biopsy in patients with stress cardiomyopathy include:[1][2]

The combination of inflammatory changes and contraction bands distinguish stress cardiomyopathy from coagulative necrosis seen in MI.[1]

References

  1. 1.0 1.1 1.2 Akashi YJ, Goldstein DS, Barbaro G, Ueyama T (2008). "Takotsubo cardiomyopathy: a new form of acute, reversible heart failure". Circulation. 118 (25): 2754–62. doi:10.1161/CIRCULATIONAHA.108.767012. PMC 4893309. PMID 19106400.
  2. 2.0 2.1 Brenner ZR, Powers J (2008). "Takotsubo cardiomyopathy". Heart Lung. 37 (1): 1–7. doi:10.1016/j.hrtlng.2006.12.003. PMID 18206521.
  3. Tsai TT, Nallamothu BK, Prasad A, Saint S, Bates ER (2009). "Clinical problem-solving. A change of heart". N. Engl. J. Med. 361 (10): 1010–6. doi:10.1056/NEJMcps0903023. PMID 19726776.

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