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Updated: Nov 17, 2025

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Double-root transfer and the half-turned truncal switch.

Vijay Agarwal1, Swaminathan Vaidyanathan2

  • 1Department of Pediatric Cardiac Surgery, Fortis Memorial Research Institute, Gurgaon, India.

Indian Journal of Thoracic and Cardiovascular Surgery
|February 19, 2021
PubMed
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Complex congenital heart defects like TGA/DORV with VSD and PS can be treated with biventricular repair. This review details the Double-Root Translocation (DRT) and Half-Turned Truncal Switch (HTTS) techniques as viable alternatives.

Area of Science:

  • Congenital Cardiac Surgery
  • Pediatric Cardiology
  • Surgical Innovation

Background:

  • Transposition of Great Arteries (TGA) and Double-Outlet Right Ventricle (DORV) are complex congenital heart defects.
  • These conditions often present with Ventricular Septal Defect (VSD) and Pulmonary Stenosis (PS).
  • Treatment pathways include univentricular and biventricular repairs.

Purpose of the Study:

  • To review established biventricular repair techniques for TGA/DORV with VSD and PS.
  • To explore Double-Root Translocation (DRT) and Half-Turned Truncal Switch (HTTS) as alternative surgical options.
  • To provide detailed insights into the DRT and HTTS procedures.

Main Methods:

  • Review of existing literature on biventricular repair strategies.
Keywords:
Double-root translocationHalf-turned truncal switchNikaidoh

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  • Detailed examination of the Double-Root Translocation (DRT) technique.
  • In-depth analysis of the Half-Turned Truncal Switch (HTTS) technique.

    • Main Results:

    • Established biventricular repairs include Rastelli, REV, pulmonary root translocation, and Nikaidoh procedures.
    • DRT and HTTS are emerging as promising alternative surgical approaches.
    • The review focuses on the specifics and potential benefits of DRT and HTTS.

    Conclusions:

    • Biventricular repair offers multiple surgical options for complex congenital heart defects.
    • DRT and HTTS represent valuable additions to the surgical armamentarium.
    • Further investigation into DRT and HTTS may refine treatment strategies for TGA/DORV with VSD and PS.