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Related Experiment Videos

Sinus node dysfunction after Fontan modifications--influence of surgical method.

Eun-Jung Bae1, Jae-Young Lee, Chung-Il Noh

  • 1Department of Pediatrics, Seoul National University Children's Hospital, Chongno-gu, South Korea. eunjbae@plaza.snu.ac.kr

International Journal of Cardiology
|April 26, 2003
PubMed
Summary

The lateral tunnel surgical method for Fontan operations is more likely to cause sinus node dysfunction (SND) than the extracardiac conduit method. Surgical approach did not significantly impact SND in heterotaxy syndrome cases.

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Area of Science:

  • Cardiology
  • Pediatric Cardiac Surgery
  • Electrophysiology

Background:

  • Sinus node dysfunction (SND) is a significant complication after Fontan operations.
  • Understanding the impact of surgical techniques on SND is crucial for patient outcomes.

Purpose of the Study:

  • To evaluate the correlation between different surgical methods and the incidence of post-Fontan sinus node dysfunction (SND).
  • To compare the risk of SND between extracardiac conduit (EC) and lateral tunneling (LT) techniques.

Main Methods:

  • Retrospective review of medical records, ECGs, and Holter monitoring for 68 patients post-Fontan operation.
  • Analysis of heart rate and SND risk in age-matched EC (n=33) and LT (n=35) groups over an intermediate follow-up period (41.3 months).

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Main Results:

  • Lateral tunnel (LT) repair was associated with a higher incidence of SND (10/35) compared to extracardiac conduit (EC) repair (3/33).
  • EC group exhibited faster resting and Holter-monitored heart rates than the LT group.
  • SND was significantly less frequent in EC versus LT for situs solitus hearts (P=0.01), but similar for heterotaxy syndrome.

Conclusions:

  • Lateral tunnel surgical repair is a significant risk factor for developing sinus node dysfunction post-Fontan operation.
  • The choice of surgical method does not significantly influence SND development in patients with heterotaxy syndrome.