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Double-chambered right ventricle: echocardiographic features

L Galiuto1, P W O'Leary, J B Seward

  • 1Section of Pediatric Cardiology, Mayo Clinic, Rochester, MN 55905, USA.

Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography
|May 1, 1996
PubMed
Summary

Double-chambered right ventricle, a rare congenital heart defect, was analyzed using echocardiography. Two main types were identified based on the cause of intraventricular obstruction: anomalous muscle bundles or hypertrophy.

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Area of Science:

  • Cardiology
  • Congenital Heart Disease
  • Echocardiography

Background:

  • Double-chambered right ventricle is an uncommon congenital heart anomaly.
  • It is characterized by the division of the right ventricular cavity into two distinct pressure chambers.
  • Previous studies primarily utilized angiography for analysis.

Purpose of the Study:

  • To analyze the specific anatomic features of double-chambered right ventricle.
  • To categorize the identified subtypes of this congenital heart disease.
  • To correlate anatomic features with clinical associations.

Main Methods:

  • Retrospective review of echocardiography data from 13 patients.
  • Mayo Clinic institutional data was utilized for analysis.

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  • Echocardiographic findings were used to identify and classify anatomic variations.

    • Main Results:

    • Two primary anatomic types of double-chambered right ventricle were identified.
    • Type 1: Intraventricular obstruction caused by an anomalous muscle bundle.
    • Type 2: Intraventricular obstruction due to marked parietal and septal hypertrophy; associated with higher incidence of ventricular septal defect.

    Conclusions:

    • Echocardiography is effective in delineating the diverse anatomic presentations of double-chambered right ventricle.
    • The classification into two main types aids in understanding the obstruction mechanism.
    • Distinct anatomic features correlate with specific clinical associations, such as ventricular septal defects.