La supervivencia en neonatos con afecciones complejas en Cirugía Pediátrica / Neonates' survival from complex conditions after Pediatric Surgery

RESUMEN Introducción: el análisis de supervivencia es uno de los métodos estadísticos más empleado en los estudios clínicos. Objetivo: determinar la influencia de factores de riesgo en la supervivencia de los neonatos con afecciones complejas en Cirugía Pediátrica. Método: en este trabajo se estudiaron los pacientes atendidos en el Centro Regional de Cirugía Neonatal de Holguín, desde el 1ro de enero de 1994 hasta el 31 de diciembre del 2015. El universo estuvo constituido por 382 niños y la muestra por 295, con un tiempo de seguimiento de hasta 28 días. Se analizaron las variables como: peso al nacer, edad gestacional y anomalías asociadas; según los factores de riesgo como: bajo peso al nacer, neonato pretérmino y anomalías asociadas; así como su influencia en la supervivencia. Con la ayuda del paquete estadístico SPSS versión 15 sobre Windows XP, se efectuó el análisis de las curvas de supervivencia por el método Kaplan-Meier, y los factores de riesgo por el método Log-Rank. Resultados: del total de la muestra (n=295), se obtienen 66 neonatos con nacimiento pretérmino (22,4%), 82 con bajo peso al nacer (27,8%) y 154 con anomalías asociadas (52,2%); siendo este el factor de riesgo predominante. En dichos pacientes, se aprecia un alto número de eventos con influencia en su supervivencia, durante el seguimiento del período neonatal. El evento final ocurrió en 61 neonatos (20,7%). La media en el tiempo de supervivencia de los neonatos con afecciones complejas en Cirugía Pediátrica fue de 23 días. Conclusiones: en la supervivencia de los pacientes influyeron los factores de riesgo estudiados. La sepsis severa fue la causa directa de muerte que predominó.

ABSTRACT Introduction: survival study is one of the most used statistical methods in the clinical field. Objective: to determine the influence of risk factors over neonates´ survival form complex conditions after Pediatric Surgery. Method: in this work we studied patients attended in the Regional Center of Neonatal Surgery of Holguín, from January 1st, 1994 to December 31st, 2015. Universe was 382 neonates and the sample was 295, monitored during 28 days. Analyzed variables were: birth weight, gestational age and associated anomalies; according to its risk factors like: low birth weight, preterm neonates and associated anomalies, as well as their influence on neonates 'survival. By the use of statistical package SPSS version 15 on Windows XP, survival curves were analyzed by the Kaplan-Meier method and the risk factors by Log-Rank. Results: of the total sample (n=295) 66 neonates were preterm births (22.4%); 82 low birth weight (27.8%) and 154 showed associated anomalies (52.2%) as the main risk factor. Patients studied showed high numbers of events and their influence on survival during neonatal period. The final event occurred to 61 neonates (20.7%). Conclusions: risk factors studied were influenced by patients´ survival and the direct cause of death was severe sepsis.

Peripherally inserted central venous lines versus central lines in surgical newborns - A comparison.

Objective. To compare the insertion characteristics, utilization profile, life span and the complication rates of Central lines (CL) and Peripherally inserted central lines (PICL). Methods. A prospective study of all CL or PICL insertions during January 2007 to September 2007 in the Neonatal Surgical Intensive Care Unit of a tertiary care center was done. The number of attempts, procedure time, duration of catheter stay, number of dressing done, complication during insertion and maintenance and cause of removal were noted and the differences analyzed statistically using Pearson chi square / t test. P value . 0.05 was considered significant. Results. Ninety two neonates were included in the present study of whom 60 were PICL insertions and 32 CL insertions. The two groups were comparable in terms of age, weight and the use of total perental nutrition (TPN) through the catheters. On comparing the PICL and CL groups, the number of attempts for successful insertion (p=0.003), the time taken (p=0.005), the number of dressing changes required during the indwelling period (p=0.005) and the overall complication rates (p=0.002) were significantly less in the PICL group. The PICL could be maintained for longer periods of time (p= 0.005) and only in 11.5% of the patients it had to be removed before completion of therapy as compared to 37.5% early removals for CL (p=0.02) Conclusion. PICL is a safe, effective and reliable method of providing prolonged IV access in newborns. It also has the least incidence of complications during insertion and maintenance over prolonged period of time when compared to CL and should be recommended for routine use in neonatal surgical patients.

All-in-one parenteral nutrition in surgical neonates.

During 1982-1990, we gave peripheral parenteral nutrition (PPN) using “single bottle technique” to 130 neonates with very satisfactory results. After following some experimental works from literature on lipid emulsion stability, we have developed total nutritional admixtures (all-in-one) that incorporate fat, aminoacids, dextrose, minerals, trace elements and vitamins in one container. Since 1993, all-in-one PN has been given to 27 neonates. The majority of cases suffered gastroschisis, omphalocele, tracheo-esophageal fistula, intestinal atresia and necrotizing enterocolitis. Duration of all-in=one feeding ranged from 5 to 46 days (60% were within 8-15 days). Complications ere minimal, phlebitis occurred only in 2 cases and cholestasis in one case. No precipitation or bacterial growth was detected. Five babies died from the severity of their conditions not from PPN. Compared with 51 neonates who received the old conventional method in the same period f time, there were no difference in the result. The all-in-one admixture ad administration of nutrition is simpler for the nurses, allowing more time for other activities and only one infusion pump is used. The cost of the conventional parenteral nutrition in the neonate is well tolerated, effective and safe.