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Noncompaction of the ventricular myocardium mimicking ischemic cardiomyopathy

Naoya Matsumoto1, Yuichi Sato, Taeko Kunimasa

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

Annals of Nuclear Medicine
|February 14, 2007
PubMed

Insights

This study highlights left ventricular failure in a 68-year-old woman, revealing noncompaction of the ventricular myocardium. This condition, characterized by prominent trabeculations, may cause myocardial damage and heart failure.

Area of Science:

  • Cardiology
  • Cardiovascular Imaging
  • Cardiac Pathophysiology

Background:

  • Left ventricular failure is a critical condition often associated with ischemic cardiomyopathy.
  • Accurate diagnosis is essential for effective patient management and treatment strategies.

Observation:

  • A 68-year-old woman presented with symptoms of left ventricular failure.
  • Initial assessments indicated ischemic cardiomyopathy with lateral wall infarction, despite a normal coronary angiogram.
  • Further imaging revealed prominent trabeculations and deep intertrabecular recesses in the left ventricle.

Findings:

  • Myocardial perfusion imaging showed a non-reversible perfusion defect and reduced ejection fraction.
  • Left ventriculography and cine magnetic resonance imaging confirmed findings consistent with noncompaction of the ventricular myocardium.
  • The left ventricular ejection fraction was markedly reduced at 28%.

Implications:

  • Noncompaction of the ventricular myocardium can mimic or coexist with ischemic cardiomyopathy, leading to left ventricular dysfunction.
  • Myocardial hypoperfusion or necrosis within the noncompacted segments may be the underlying cause of heart failure in these patients.
  • Advanced imaging techniques are crucial for diagnosing this rare cardiomyopathy and guiding therapeutic interventions.

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