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Left Ventricular Midcavitary Obstruction Caused by Abnormal Papillary Muscles: Diagnosis and Surgical Management of

Mohamed M Elgayar1, Asmaa R Abd El Naby2,3, Amr Alsalakawy4

  • 1Pediatric Cardiac Intensive Care Unit, Aswan Heart Centre, Magdi Yacoub Foundation, Aswan, Egypt.

World Journal for Pediatric & Congenital Heart Surgery
|August 23, 2025
PubMed

Insights

Rare left ventricular papillary muscle abnormalities can cause significant obstruction in children. Surgical intervention effectively relieved obstruction in two pediatric cases, highlighting the importance of considering these anomalies in diagnosis.

Area of Science:

  • Pediatric Cardiology
  • Cardiac Surgery
  • Congenital Heart Disease

Background:

  • Abnormalities of the left ventricular papillary muscles are uncommon but can lead to serious clinical issues.
  • These anomalies can cause obstruction of blood flow within the left ventricle.

Purpose of the Study:

  • To report two pediatric cases of left ventricular papillary muscle abnormalities causing obstruction.
  • To describe the surgical management and outcomes for these rare conditions.

Main Methods:

  • Case report of two pediatric patients with thickened, fused papillary muscles.
  • Surgical intervention including septal myectomy, muscle splitting, and adhesion resection.

Main Results:

  • Papillary muscle abnormalities led to left ventricle inflow and midcavitary outflow obstruction.
  • Surgical management successfully relieved the obstruction in both cases.

Conclusions:

  • Left ventricular papillary muscle abnormalities are an important consideration in the differential diagnosis of pediatric midcavitary obstruction.
  • Prompt surgical intervention can effectively manage these rare but significant cardiac conditions.

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