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OBJECTIVE: To determine whether weight gain velocity (g/kg/day) 30 days after the initiation of feeds after cardiac surgery and other clinical outcomes improve in infants with single ventricle physiology fed an exclusive human milk diet compared with a mixed human and bovine diet. STUDY DESIGN: In this multicenter, randomized, single blinded, controlled trial, term neonates 7 days of age or younger with single ventricle physiology and anticipated cardiac surgical palliation within 30 days of birth were enrolled at 10 US centers. Both groups received human milk if fed preoperatively. During the 30 days after feeds were started postoperatively, infants in the intervention group received human milk fortified once enteral intake reached 60 mL/kg/day with a human milk-based fortifier designed for term neonates. The control group received standard fortification with formula once enteral intake reached 100 mL/kg/day. Perioperative feeding and parenteral nutrition study algorithms were followed. RESULTS: We enrolled 107 neonates (exclusive human milk = 55, control = 52). Baseline demographics and characteristics were similar between the groups. The median weight gain velocity at study completion was higher in exclusive human milk vs control group (12 g/day [IQR, 5-18 g/day] vs 8 g/day [IQR, 0.4-14 g/day], respectively; P = .03). Other growth measures were similar between groups. Necrotizing enterocolitis of all Bell stages was higher in the control group (15.4 % vs 3.6%, respectively; P = .04). The incidence of other major morbidities, surgical complications, length of hospital stay, and hospital mortality were similar between the groups. CONCLUSIONS: Neonates with single ventricle physiology have improved short-term growth and decreased risk of NEC when receiving an exclusive human milk diet after stage 1 surgical palliation. TRIAL REGISTRATION: This trial is registered with ClinicalTrials.gov (www. CLINICALTRIALS: gov, Trial ID: NCT02860702).

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OBJECTIVE: To identify the measures of biventricular function and surrogates of pulmonary vascular resistance that can be expected in relatively stable extremely premature neonates, and evaluate maturational changes in myocardial performance in this patient population. STUDY DESIGN: This was a prospective observational study. Clinically stable extremely preterm newborns were divided into 3 cohorts based on gestational age: cohort 1 (240/7-256/7 weeks), cohort 2 (260/7-276/7 weeks), and cohort 3 (280/7-296/7 weeks). Serial echocardiograms were obtained on day of life 3-5, 7-10, and just prior to discharge. RESULTS: In total, 46 subjects met the criteria aimed at capturing only the most clinically healthy and stable newborns less than 296/7 weeks of gestational age. Myocardial performance was reliably assessed by echocardiography with high inter-reader correlation. Normative values were identified for right ventricular function, left ventricular function, and surrogates of pulmonary vascular resistance. CONCLUSIONS: Biventricular systolic performance is significantly different in the clinically stable extremely premature neonate when compared with healthy full-term newborns. All participants had evidence of poor biventricular compliance at birth which improved with maturation. Extreme prematurity does not appear to adversely affect myocardial functional maturation at the time of term corrected age and/or discharge.

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BACKGROUND: The muscle-sparing thoracotomy (MST) has not yet been thoroughly studied and assessed in comparison to the traditional thoracotomy method in newborns. AIM: To compare the outcomes of MST and standard posterolateral thoracotomy (PLT) in newborns. METHODS: Randomized, controlled, double-blind trial on 40 neonates with esophageal atresia, comparing the time of beginning a surgery until seeing the pleura, the duration of hospitalization in the neonatal intensive care unit, the time in ventilator, the time of returning the shoulder function, the time of returning the Moro reflex, and the mortality between the two techniques. RESULTS: The data showed no differences between the two groups in basic information (weight, height, gender, numbers of prematurity neonates and caesarean). The results on the size of the scar in the MST group was significantly lower than in the PLT group. Also, the time of returning the shoulder function in MST group was earlier than in PLT group. There were no significant differences in the duration since the beginning the surgery to see the pleura, the time of being hospitalized in intensive unit, the time that the infant required ventilator, returning time of the Moro reflex in 1st and 3rd months after the operation, and the mortality rates between MST and PLT groups. CONCLUSION: It seems that the advantages of using MST over PLT procedure in neonates include the earlier shoulder function recovery and also superior cosmetic results.

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ABSTRACT Background : The muscle-sparing thoracotomy (MST) has not yet been thoroughly studied and assessed in comparison to the traditional thoracotomy method in newborns. Aim : To compare the outcomes of MST and standard posterolateral thoracotomy (PLT) in newborns. Methods : Randomized, controlled, double-blind trial on 40 neonates with esophageal atresia, comparing the time of beginning a surgery until seeing the pleura, the duration of hospitalization in the neonatal intensive care unit, the time in ventilator, the time of returning the shoulder function, the time of returning the Moro reflex, and the mortality between the two techniques. Results : The data showed no differences between the two groups in basic information (weight, height, gender, numbers of prematurity neonates and caesarean). The results on the size of the scar in the MST group was significantly lower than in the PLT group. Also, the time of returning the shoulder function in MST group was earlier than in PLT group. There were no significant differences in the duration since the beginning the surgery to see the pleura, the time of being hospitalized in intensive unit, the time that the infant required ventilator, returning time of the Moro reflex in 1st and 3rd months after the operation, and the mortality rates between MST and PLT groups. Conclusion : It seems that the advantages of using MST over PLT procedure in neonates include the earlier shoulder function recovery and also superior cosmetic results.

RESUMO Racional : A técnica de toracotomia poupadora de músculo (MST) ainda não foi estudada e avaliada em relação ao método tradicional de toracotomia em recém-nascidos. Objetivo : Comparar os resultados da MST e toracotomia posterolateral padrão (PLT) em recém-nascidos. Métodos : Ensaio randomizado, controlado, duplamente cego em 40 neonatos com atresia esofágica, comparando o tempo de início da incisão até ver a pleura, a duração da hospitalização na unidade de terapia intensiva neonatal, o tempo em ventilador, o tempo da volta da função do ombro, tempo de retorno do reflexo Moro e mortalidade entre as duas técnicas. Resultados : Os dados não mostraram diferenças entre os dois grupos em informações básicas (peso, altura, gênero, número de neonatos de prematuridade e cesariana). Os resultados sobre o tamanho da cicatriz no grupo MST foram significativamente menores do que no grupo PLT. Além disso, o tempo de retorno da função do ombro no grupo MST foi mais precoce do que no grupo PLT. Não houve diferenças significativas na duração desde o início da operação até a pleura ser vista, o tempo de hospitalização em unidade intensiva, o tempo que a criança necessitou de ventilador, retorno do reflexo Moro nos 1º e 3º meses após a operação, e as taxas de mortalidade entre os grupos. Conclusão : As vantagens de usar o procedimento MST sobre PLT em neonatos incluem a recuperação da função do ombro e também resultados cosméticos superiores.

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