ABSTRACT
BACKGROUND: Morbidity and mortality after the Norwood procedure remains high. Shunt size selection is not standardized and the impact of shunt size on outcomes is poorly understood. The Single Ventricle Reconstruction trial randomized infants to modified Blalock-Taussig-Thomas shunt (MBTTS) or right ventricle-to-pulmonary artery shunt at the Norwood procedure. We assessed shunt size distribution and its association with postoperative outcomes. METHODS: We included 544 patients, excluding 5 with ambiguous shunt crossover data. Normalized shunt diameter 1 and 2 were calculated as shunt diameter divided by patient's weight and body surface area, respectively. The primary outcome was 30-day mortality after Norwood. Secondary outcomes were intensive care and total length of stay, and survival to Glenn procedure. Logistic and ordinal regression models evaluated the association of normalized shunt diameter with outcomes. RESULTS: Thirty-day mortality after Norwood was 11.4% (n = 62), survival to Glenn procedure was 72.6% (n = 395), median length of stay was 14.0 (interquartile range, 9.0-27.7) days and 24.0 (interquartile range, 16.0-41.0) days in the intensive care and total, respectively. Normalized shunt diameters exhibited variation in both shunt types but were not associated with 30-day mortality. Right ventricle-to-pulmonary artery shunt size was not associated with secondary outcomes. However, a MBTTS diameter ≥1.5 mm/kg predicted longer Norwood (odds ratio, 4.89; 95% CI, 1.41-16.90) and intensive care (odds ratio, 4.11; 95% CI, 1.25-13.49]) duration. CONCLUSIONS: Shunt size selection was variable. Right ventricle-to-pulmonary artery shunt had a wider size range seen with favorable outcomes compared with MBTTS. A MBTTS either too large or too small is associated with worse postoperative outcomes. Refining shunt sizing practices can improve surgical outcomes after the Norwood procedure.
ABSTRACT
Objetivo: Comparar la seguridad del cierre primario de la vía biliar versus cierre sobre tubo en "T", luego de la exploración laparoscópica de la vía biliar (ELVB). Método: Estudio prospectivo, controlado, no aleatorio, de pacientes con indicación de ELVB, resueltos a través de coledocotomía en un periodo de 9 años. A 15 pacientes se les realizó cierre sobre tubo en "T", mientras que a 20 pacientes se les realizó cierre primario de la vía biliar común.Resultados: No se observaron diferencias en cuanto a sexo, edad o indicación de la cirugía entre los dos grupos. Si bien el tiempo quirúrgico de los pacientes a los cuales se les colocó el tubo en "T" fue mayor (ï: 145 minutos vs. ï: 110 minutos), esta diferencia no fue estadísticamente significativa. El 80% de los pacientes con tubo en "T presentó salida de bilis a través del dren subhepático por un periodo menor a 3 días versus 30% de los pacientes con cierre primario (p < 0.05). Una paciente en el grupo de cierre sobre tubo en "T" presentó abdomen agudo debido a biliperitoneo posterior a la extracción de tubo, requiriendo reintervención laparoscópica para lavado y drenaje. No se presentaron complicaciones en el grupo de cierre primario. No se han reportado casos de litiasis residual. El tiempo de hospitalización fue comparable. Conclusión: El cierre primario del colédoco sin inserción de tubo en "T", luego de ELVB para tratamiento de la coledocolitiasis,es un procedimiento seguro y efectivo(AU)
Objetive: To compare the safety of common bile duct primary closure vs "t" tube drainage in laparoscopic common bile duct exploration (LCBDE).Method: This is a prospective, controlled, no randomized study, of patients undergoing laparoscopic common bile duct exploration through choledochotomy, in a nine years period. In15 patients we placed tube "T" drainage. In 20 cases a primary closure of the common bile duct was performed.Results: No difference in age, sex or surgery indication was observed. The operative time of patients with "t" tube insertion was longer than patients with primary closure (ï: 145 minutes vs. ï:11 0 m i n u t e s ) , h o w e v e r t h i s d i f f e r e n c e h a s n o t s t a t i s t i c a l s i g n i f i c a n -ce. 80% of patients with "t" tube had bile leakage of three days or less versus 30% of patients with primary closure (p<0.05). Onepatient with "T" tube had an acute abdomen due to biliary peritonitis after tube removal, requiring laparoscopic reintervention for lavage and drainage. There were no complications in the primary closure group. No cases of residual stones have been reported. Postoperative hospitalization time shows no difference between groups. Conclusion: Primary closure of the common bile duct without "T" tube insertion, after LCBDE for treatment of choledo-cholithiasis, is an effective and safe procedure(AU)
