Double-chambered right ventricle in a 16-year-old patient with Williams syndrome

Wojciech Mądry1, Maciej A Karolczak1, Ewa Zacharska-Kokot1

  • 1Department of Pediatric Cardiothoracic Surgery, Medical University of Warsaw, Warsaw, Poland.

Insights

A rare case of double-chambered right ventricle in a Williams syndrome patient was diagnosed via echocardiography. Surgical correction was successful, highlighting the importance of advanced imaging in complex congenital heart defects.

Area of Science:

  • Cardiology
  • Medical Genetics

Background:

  • Williams syndrome is a genetic disorder associated with various cardiovascular anomalies.
  • Double-chambered right ventricle (DCRV) is a rare congenital heart defect characterized by anomalous muscular septation of the right ventricle.
  • The co-occurrence of DCRV and Williams syndrome is exceptionally uncommon.

Observation:

  • A 16-year-old male with Williams syndrome presented with gastrointestinal bleeding, necessitating colonoscopy preparation.
  • Pre-existing diagnoses included ventricular septal defect and mild pulmonary stenosis.
  • Echocardiography under general anesthesia revealed hypertrophied muscular bundles causing severe right ventricular outflow tract obstruction with a 100 mmHg gradient.

Findings:

  • The patient was diagnosed with double-chambered right ventricle, a condition rarely reported in individuals with Williams syndrome.
  • Previous literature documented only one case of DCRV in Williams syndrome, diagnosed via invasive angiocardiography.
  • Echocardiography provided crucial data for diagnosis and surgical planning.

Implications:

  • This case underscores the importance of comprehensive cardiac evaluation in patients with Williams syndrome, even with seemingly unrelated presenting symptoms.
  • Echocardiography is a valuable non-invasive tool for diagnosing complex congenital heart defects like DCRV in this population.
  • Successful surgical correction based on echocardiographic findings demonstrates the efficacy of modern diagnostic and therapeutic approaches for rare cardiac anomalies.

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