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Related Experiment Videos

Takotsubo-like transient biventricular dysfunction with pressure gradients.

Satoshi Kurisu1, Ichiro Inoue, Takuji Kawagoe

  • 1Department of Cardiology, Hiroshima City Hospital, Hiroshima .

Internal Medicine (Tokyo, Japan)
|August 12, 2005
PubMed
Summary

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This case study highlights a reversible form of stress-induced cardiomyopathy presenting with ST-segment elevation myocardial infarction (STEMI)-like features. The patient experienced dynamic left ventricular outflow tract obstruction upon dobutamine stress testing, resolving with medical management.

Area of Science:

  • Cardiology
  • Cardiovascular Medicine
  • Clinical Case Reports

Background:

  • Takotsubo cardiomyopathy (TTC) is a form of non-ischemic heart muscle dysfunction.
  • It can mimic acute myocardial infarction, presenting with ST-segment elevation and regional wall motion abnormalities.
  • Dynamic left ventricular outflow tract (LVOT) obstruction is an uncommon but recognized complication.

Observation:

  • A 78-year-old woman presented with chest oppression and ST-segment elevation myocardial infarction (STEMI)-like electrocardiogram findings.
  • Initial ventriculography revealed apical akinesis and basal hyperkinesis with significant pressure gradients, suggesting dynamic LVOT obstruction.
  • These abnormalities resolved spontaneously within 16 days.

Findings:

  • Recatheterization demonstrated normal left ventricular wall motion and no pressure gradients at rest.

Related Experiment Videos

  • However, dobutamine stress testing induced a significant pressure gradient (60 mmHg) between the left ventricular apex and the aorta.
  • This indicates a reversible, stress-induced dynamic LVOT obstruction.

    • Implications:

    • This case underscores the importance of considering dynamic LVOT obstruction in the differential diagnosis of STEMI-like presentations.
    • Reversible cardiac dysfunction and dynamic obstruction can occur in stress-related cardiomyopathies.
    • Prompt recognition and management are crucial for favorable outcomes in such cases.