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Tako-Tsubo cardiomyopathy with coronary artery stenosis: a case-series challenging the original definition

N Gaibazzi1, F Ugo, L Vignali

  • 1Parma University Hospital-Parma, Italy. nicola.gaibazzi@inwind.it

International Journal of Cardiology
|March 4, 2008
PubMed

Insights

Tako-Tsubo cardiomyopathy (TTC) may coexist with coronary stenosis. This case series suggests modifying the TTC definition to include patients with bystander coronary lesions, improving diagnosis for these patients.

Area of Science:

  • Cardiology
  • Cardiovascular Medicine
  • Clinical Case Studies

Background:

  • Tako-Tsubo cardiomyopathy (TTC), also known as stress-induced cardiomyopathy, is typically defined by transient left ventricular (LV) dysfunction without significant coronary artery disease.
  • The diagnostic criteria for TTC traditionally exclude patients with obstructive coronary stenosis.

Observation:

  • This case series describes seven female patients presenting with symptoms and ECG findings consistent with acute coronary syndrome.
  • All patients exhibited mild troponin I elevation, LV apical or midventricular ballooning on ventriculography, and at least one coronary stenosis of >=50% on angiography.
  • Cardiac magnetic resonance imaging revealed no myocardial late Gadolinium enhancement, and full recovery of LV contractility was observed.

Findings:

  • The study identified seven cases of TTC coexisting with significant coronary stenosis (>=50%).
  • These findings challenge the traditional exclusion of coronary stenosis in TTC diagnosis.
  • Patients with bystander coronary lesions may be underdiagnosed under current TTC criteria.

Implications:

  • The findings suggest a need to reconsider and potentially modify the definition of TTC.
  • Removing the strict exclusion of coronary stenosis could lead to better diagnosis and management of patients with TTC and concomitant coronary lesions.
  • This modification may help identify a previously underdiagnosed subgroup of patients with TTC.

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