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Pulmonary valve cusp augmentation with autologous pericardium may improve early outcome for tetralogy of Fallot
Petros Anagnostopoulos1, Anthony Azakie, Shobha Natarajan
1Division of Pediatric Cardiac Surgery, Pediatric Heart Center, University of California at San Francisco Children's Hospital, San Francisco, Calif, USA.
Insights
Pulmonary valve cusp augmentation reduces postoperative pulmonary insufficiency in children with tetralogy of Fallot repaired with a transannular patch. This technique improves early outcomes by decreasing intubation and ICU stays.
Area of Science:
- Pediatric Cardiac Surgery
- Congenital Heart Disease
- Cardiovascular Surgery
Background:
- Transannular patches are used to relieve right ventricular outflow tract obstruction in tetralogy of Fallot.
- This repair can lead to pulmonary insufficiency.
Purpose of the Study:
- To evaluate if pulmonary valve cusp augmentation with pericardium decreases pulmonary insufficiency.
- To assess if this technique improves early outcomes in tetralogy of Fallot repair.
Main Methods:
- Retrospective study of 43 patients undergoing tetralogy of Fallot repair.
- Comparison between transannular patch alone (n=25) and transannular patch with cusp augmentation (n=18).
Main Results:
- Cusp augmentation group had significantly shorter intubation (1 vs 3 days) and ICU stay (2 vs 8 days).
- Fewer patients in the cusp augmentation group required prolonged inotropic support (1 vs 13).
- Moderate or severe pulmonary insufficiency was significantly lower in the cusp augmentation group (5 vs 21).
Conclusions:
- Pulmonary valve cusp augmentation effectively reduces postoperative pulmonary insufficiency.
- This technique offers improved early outcomes for tetralogy of Fallot repair requiring a transannular patch.
Objectives:
The transannular patch used to relieve right ventricular outflow tract obstruction in children with tetralogy of Fallot may result in pulmonary insufficiency. We hypothesized that pulmonary valve cusp augmentation with pericardium would decrease pulmonary insufficiency and improve the early outcome for transatrial-transpulmonary tetralogy of Fallot repair requiring transannular patch.
Methods:
Since November 2001, 41 patients with tetralogy of Fallot and 2 patients with isolated pulmonary valve stenosis had relief of right ventricular outflow tract obstruction with either a transannular patch plus pulmonary valve cusp augmentation (n = 18) or a transannular patch alone (n = 25). Data were retrospectively collected.
Results:
The median age (5.3 vs 3.2 months; P = .09) and weight (6.4 vs 5.2 kg; P = .3) were similar for the cusp augmentation and transannular patch groups, respectively. The diameter of the pulmonary valve annulus (6.4 vs 6.0 mm; P = .57) and the McGoon index (1.47 vs 1.69, P = .75) were also similar. The mean aortic clamp time (48 +/- 18 minutes vs 52 +/- 19 minutes; P = .46) and median cardiopulmonary bypass time (89 vs 91 minutes; P = .9) did not differ. One patient with a transannular patch died of multiorgan system failure. Patients with a pulmonary valve cusp augmentation had a shorter duration of intubation (1 vs 3 days; P < .001) and intensive care unit stay (2 vs 8 days; P < .001). Thirteen patients with a transannular patch and 1 patient with a pulmonary valve cusp augmentation required inotropic support for more than 72 hours (P = .001). Discharge echocardiograms demonstrated moderate or severe pulmonary insufficiency in 5 patients with a pulmonary valve cusp augmentation and in 21 patients with a transannular patch (P < .001). At 7.5 months, 3 patients (17%) with a pulmonary valve cusp augmentation had progression of pulmonary insufficiency.
Conclusions:
Augmentation of a pulmonary valve cusp reduces the incidence of clinically significant postoperative pulmonary insufficiency. This technique may improve the early outcome for children with tetralogy of Fallot requiring a transannular patch.
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