Mid-ventricular hypertrophic obstructive cardiomyopathy presenting with acute myocardial infarction

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Yuichi Sato1, Naoya Matsumoto, Shinro Matsuo

  • 1Department of Cardiology, Nihon University School of Medicine, Tokyo, Japan. yuichis@med.nihon-u.ac.jp

Texas Heart Institute Journal
|January 4, 2008
PubMed

Insights

Mid-ventricular hypertrophic obstructive cardiomyopathy, a rare heart condition, can lead to apical aneurysms. Impaired coronary circulation may contribute to the obstruction seen in this specific cardiomyopathy.

Area of Science:

  • Cardiology
  • Cardiovascular Medicine
  • Medical Case Reports

Background:

  • Mid-ventricular hypertrophic obstructive cardiomyopathy is a rare cardiac condition.
  • It can be associated with apical aneurysms, presenting unique diagnostic challenges.

Observation:

  • A patient presented with ventricular fibrillation, ST-segment elevation, and elevated cardiac enzymes.
  • Coronary arteries were notably normal, ruling out typical ischemic causes.
  • Imaging revealed an unusual hourglass left ventricle with an apical aneurysm.

Findings:

  • Left-heart catheterization and Doppler echocardiography confirmed a significant pressure gradient between left ventricular chambers.
  • This gradient indicates obstruction within the mid-ventricle.
  • The findings highlight a complex cardiac morphology and obstructive physiology.

Implications:

  • The case suggests impaired coronary artery circulation may be implicated in the development of mid-ventricular obstruction.
  • This case expands understanding of rare cardiomyopathies and their potential etiologies.
  • Further research into coronary flow dynamics in such conditions is warranted.

Keywords:
Cardiomyopathy, hypertrophic/complications/physiopathologyheart aneurysm/etiologymagnetic resonance imagingmyocardial infarctionthallium radioisotopes/diagnostic usetomography, emission computed, single-photonventricular outflow obstruction/diagnosis

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