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Related Experiment Videos

Conjoined twins, right atrial isomerism, and sequential segmental analysis.

M B Rossi1, J Burn, S Y Ho

  • 1Department of Paediatrics, Brompton Hospital, London.

British Heart Journal
|November 1, 1987
PubMed
Summary

This study examined conjoined twins with chest connections, finding diverse cardiac anomalies. Recognizing atrial arrangement proved key to classifying these complex congenital heart conditions.

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Area of Science:

  • Cardiology
  • Developmental Biology
  • Pediatric Surgery

Background:

  • Conjoined twins present unique challenges in understanding congenital anomalies.
  • Thoracic conjoined twins often exhibit complex cardiovascular malformations.
  • Accurate classification is crucial for diagnosis and management.

Purpose of the Study:

  • To analyze the cardiac morphology in three cases of thoracopagus conjoined twins.
  • To evaluate the utility of sequential segmental analysis in classifying complex congenital heart disease in conjoined twins.
  • To highlight the importance of atrial arrangement in the diagnostic process.

Main Methods:

  • Case series review of three sets of thoracopagus conjoined twins.
  • Detailed examination of intracardiac morphology and atrial arrangement.

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  • Application of sequential segmental analysis for anomaly classification.

    • Main Results:

    • One set of twins displayed discordant atrial arrangements (right atrial isomerism vs. usual).
    • The other two sets had usual atrial arrangements in both twins.
    • A wide spectrum of cardiac anomalies, including atrioventricular septal defects and absent atrioventricular connections, were observed.
    • Sequential segmental analysis, initiated by recognizing atrial arrangement, successfully classified all complex cardiac anomalies.

    Conclusions:

    • Atrial arrangement is a fundamental determinant in classifying complex congenital heart disease in conjoined twins.
    • Sequential segmental analysis is an effective method for characterizing intricate cardiac malformations in this population.
    • Despite intracardiac complexity, initial identification of atrial arrangement facilitates accurate diagnosis.