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COMPARATIVE STUDY
JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Second stage after initial hybrid palliation for hypoplastic left heart syndrome: Arterial or venous shunt?
Journal of Thoracic and Cardiovascular Surgery 2015 August
OBJECTIVE: Hybrid palliation for hypoplastic left heart syndrome has been developed as an alternative to neonatal Norwood surgery. At the second stage, a source of pulmonary blood flow has to be established. Options include an arterial modified Blalock-Taussig or a venous superior cavopulmonary shunt.
METHODS: We retrospectively reviewed patients who received second-stage palliation after the initial hybrid. Patients were stratified according to the source of pulmonary blood supply into the arterial shunt (n = 17 patients) or venous shunt (n = 26 patients).
RESULTS: Age and weight at second stage were lower in the arterial group (85 [45-268] days vs 152.5 [61-496] days, P = .001 and 3.6 [2.7-9.4] kg vs 5.1 [2.97-9.4] kg, P = .001, respectively). All recorded surgical times were shorter in the arterial group. Mechanical ventilation and intensive care stay were shorter in the venous group (5.82 [2.01-14.9] days vs 2.42 [0.56-13.67] days, P = .005 and 8.5 [3.6-23.7] vs 5.75 [0.8-17.6] days, P = .036, respectively) There was no difference in mortality (2/17 vs 5/26; P = .685) or incidence of complications between the 2 groups. There was a tendency toward a higher need for intervention in the immediate postoperative period in the venous group, but this did not reach significance (6/17 vs 13/26, P = .342). The arterial group has shown better development of the branch pulmonary arteries with a higher lower lobe index (158.38 ± 39.43 mm(2)/m(2) vs 113.33 ± 43.96 mm(2)/m(2), respectively, P = .037).
CONCLUSIONS: Both arterial and venous shunts are viable options with mortality and morbidity results comparable to those in the literature. The arterial shunt pathway (2-stage Norwood I) may offer better pulmonary arterial growth than the venous shunt (comprehensive/combined Norwood I and II).
METHODS: We retrospectively reviewed patients who received second-stage palliation after the initial hybrid. Patients were stratified according to the source of pulmonary blood supply into the arterial shunt (n = 17 patients) or venous shunt (n = 26 patients).
RESULTS: Age and weight at second stage were lower in the arterial group (85 [45-268] days vs 152.5 [61-496] days, P = .001 and 3.6 [2.7-9.4] kg vs 5.1 [2.97-9.4] kg, P = .001, respectively). All recorded surgical times were shorter in the arterial group. Mechanical ventilation and intensive care stay were shorter in the venous group (5.82 [2.01-14.9] days vs 2.42 [0.56-13.67] days, P = .005 and 8.5 [3.6-23.7] vs 5.75 [0.8-17.6] days, P = .036, respectively) There was no difference in mortality (2/17 vs 5/26; P = .685) or incidence of complications between the 2 groups. There was a tendency toward a higher need for intervention in the immediate postoperative period in the venous group, but this did not reach significance (6/17 vs 13/26, P = .342). The arterial group has shown better development of the branch pulmonary arteries with a higher lower lobe index (158.38 ± 39.43 mm(2)/m(2) vs 113.33 ± 43.96 mm(2)/m(2), respectively, P = .037).
CONCLUSIONS: Both arterial and venous shunts are viable options with mortality and morbidity results comparable to those in the literature. The arterial shunt pathway (2-stage Norwood I) may offer better pulmonary arterial growth than the venous shunt (comprehensive/combined Norwood I and II).
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