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Related Experiment Videos

Modifications to the cavopulmonary anastomosis do not eliminate early sinus node dysfunction.

M I Cohen1, N D Bridges, J W Gaynor

  • 1Divisions of Cardiology and Cardiothoracic Surgery and The Departments of Pediatrics and Surgery, The Children's Hospital of Philadelphia and The University of Pennsylvania School of Medicine, Philadelphia, PA, USA. mi@email.chop.edu

The Journal of Thoracic and Cardiovascular Surgery
|October 24, 2000
PubMed
Summary

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Surgery near the sinus node does not increase the risk of sinus node dysfunction after Fontan procedures. Patient anatomy and surgeon preference should guide surgical decisions, not concerns about early sinus node dysfunction.

Area of Science:

  • Pediatric Cardiology
  • Congenital Heart Disease Surgery
  • Electrophysiology

Background:

  • Sinus node dysfunction is a potential complication following Fontan-type procedures.
  • Certain surgical techniques theoretically place the sinus node at higher risk.

Purpose of the Study:

  • To compare the incidence of sinus node dysfunction between surgical approaches that do and do not directly involve the sinus node.
  • To inform surgical decision-making regarding cavopulmonary anastomosis selection.

Main Methods:

  • Prospective cohort study of 130 patients undergoing bidirectional Glenn, hemi-Fontan, extracardiac conduit, or lateral tunnel Fontan procedures.
  • Sinus node dysfunction defined by heart rate or rhythm abnormalities on ECG and ambulatory monitoring.
  • Data collected from January 1996 to December 1999.

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Main Results:

  • Early sinus node dysfunction was higher after hemi-Fontan (36%) vs. bidirectional Glenn (9.8%), but this difference resolved by discharge.
  • No significant difference in early sinus node dysfunction between extracardiac conduit (13%) and lateral tunnel (13%) Fontan procedures.
  • No predictive variables for sinus node dysfunction were identified.

Conclusions:

  • Surgical proximity to the sinus node does not impact the development of early sinus node dysfunction.
  • Surgical strategy should prioritize patient anatomy and surgeon expertise over concerns regarding sinus node dysfunction.