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Updated: Jun 14, 2026
Wireless Telemetry Device Implantation in a Fontan Ovine Model for Continuous and Long-Term Hemodynamic Monitoring
Published on: May 2, 2025
Fontan operation: a technique in evolution
Fernando Antonio Fantini1, Bayard Gontijo, Cristiane Martins
1Biocor Instituto, Brazil. fernandofantini@uaivip.com.br
Objectives:
Recent experimental flow studies based on angiography and magnetic resonance have shown that total cavopulmonary anastomosis (TCPA) is a valid concept for surgical treatment of many congenital heart defects, but there is not agreement of the best surgical arrangement. Our purpose is to analyze the immediate results with three different techniques of TCPA.
Methods:
We sought to analyze retrospectively all TCPA realized from January 2005 to July 2008; there were 40 patients, all with previous Glenn anastomosis, with mean age of 6.4 +/- 3.2 years. Three different techniques were employed: Group 1 (G1) lateral tunnel, Group 2 (G2) extracardiac conduits, Group 3 (G3) intracardiac conduit directed to the left pulmonary artery. All patients had a fenestration done.
Results:
G1 had 11 patients, G2 10 patients and G3 19 patients. Preoperative data were similar in the 3 groups (P>0.05). Surgical mortality was higher in Groups 1 and 2 (9.1% and 10%) compared to Group 3 (0%) but there was no statistical significance (P=0.3841). Pleural effusion was absent in Group 3 (0%), which was statistically significant in relation to the other groups (P=0.0128). The hospitalization time was also significantly lower in G3 (8 days) in relation to G1 (18 days) and G2 (13 days) (P=0.0164).
Conclusion:
Intracardiac TCPA was associated with lower postoperative morbidity and is currently our preferred technique.
