Post-obstructive diuresis after posterior urethral valve treatment in neonates: a retrospective cohort study.

BACKGROUND: The management of posterior urethral valve (PUV) in neonates requires close monitoring in the intensive care unit because of the risk of post-obstructive diuresis (POD). Our aim was to describe the incidence and factors associated with POD in newborns treated for PUV. METHODS: Retrospective analysis of the medical records of all neonates who underwent surgical intervention for PUV in our neonatal intensive care unit between January 2014 and April 2021. RESULTS: Of the 40 patients included, 15 (37.5%) had POD defined by urine output > 6 ml.kg-1.h-1 during the first 24 h following urinary tract obstruction relief. At prenatal ultrasound examinations, oligohydramnios was more common in the group with POD than in the group without (53.3% vs. 8%, p = 0.002). Preterm birth was more frequent in neonates with POD (66.7% vs. 8%; p < 0.001). Median serum creatinine (212 [137-246] vs. 95 [77-125] µmol.l-1; p < 0.001) and urea (8.5 [5.2-12.2] vs. 4.1 [3.5-4.7] mmol.l-1; p < 0.001) concentrations on the day of obstruction relief were significantly higher in the group with POD than in the group without. After adjustment for prematurity, logistic regression models confirmed correlation between the occurrence of POD and the severity of the consequences of urethral obstruction (i.e., oligohydramnios and serum creatinine levels; ß = 2.90 [0.88; 5.36], p = 0.013 and ß = 0.014 [0.003; 0.031], p = 0.034, respectively). CONCLUSIONS: In neonates, POD is common after the relief of PUV-related obstruction. Our findings may help to identify patients at highest risk. A higher resolution version of the Graphical abstract is available as Supplementary information.

Peri- and neonatal factors influencing mortality and morbidity 2 years after esophageal atresia primary repair: a single center retrospective study.

Long-term digestive, respiratory, and neurological morbidity is significant in children who have undergone surgery for esophageal atresia (EA), especially after staged repair for long-gap EA. Risk factors for morbidity after primary repair (non-long-gap populations) have been less documented. We investigated peri- and neonatal factors associated with unfavorable outcomes in children 2 years after primary esophageal anastomosis. This was a single-center retrospective study, based on neonatal, surgical, and pediatric records of children born between December 1, 2002, and December 31, 2018, and followed up to age 2 years. The primary endpoint was unfavorable outcome at 2 years of age, defined by death or survival with severe respiratory, digestive, or neurologic morbidity. Univariate analyses followed by logistic regression analyses were performed to identify the peri- and neonatal risk factors of unfavorable outcomes among survivors at discharge. A total of 150 neonates were included (mean birth weight 2520 ± 718 g, associated malformations 61%); at age 2, 45 (30%) had one or more severe morbidities and 11 had died during the neonatal stay and 2 after discharge (8.7% deaths). In multivariate analyses of the 139 survivors at discharge, duration of ventilatory support (invasive and non-invasive) for more than 8 days (OR 3.74; CI95% [1.68-8.60]; p = 0.001) and achievement of full oral feeding before hospital discharge (OR 0.20; CI95% [0.06-0.56]; p = 0.003) were independently associated with adverse outcome after adjustment for sex, preterm birth, associated heart defect, any surgical complication, and the occurrence of more than one nosocomial infections during the neonatal stay. CONCLUSIONS: Post-operative ventilation and feeding management strategies may represent an opportunity for quality-of-care improvement to positively impact long-term outcomes after primary esophageal atresia repair. WHAT IS KNOWN: • Children operated on for esophageal atresia experience long-term digestive, respiratory, and neurologic morbidity, especially after multiple-stage esophageal repair. • Exclusive oral feeding at discharge is associated with a decreased risk of medical complications in the first years of life, in studies including all types of esophageal atresia repair. Outcomes of children after primary repair (non-long gap populations) have been less documented. WHAT IS NEW: • In our retrospective cohort of children with one-stage esophageal atresia repair, ventilatory support for more than 8 days and inability to achieve full oral feeding before hospital discharge in the neonatal period were independently associated with adverse digestive, respiratory, and neurologic outcomes at 2 years in survivors. • Both these factors are potentially modifiable, representing an opportunity for quality-of-care improvement to positively impact long-term outcomes. These results might also help identify children at risk of unfavorable evolution, to customize a multi-disciplinary follow-up program.

Isolation and Characterization of Commensal Bifidobacteria Strains in Gut Microbiota of Neonates Born Preterm: A Prospective Longitudinal Study.

Bifidobacterial population dynamics were investigated using a longitudinal analysis of dominant species isolated from feces of neonates born preterm (singletons (n = 10), pairs of twins (n = 11)) from birth up to 16 months of age. We performed quantification, isolation, and identification of the dominant bifidobacteria strains. The genetic relationship of the isolates was investigated via pulsed field gel electrophoresis (PFGE) genotyping, and PCR was used to screen the specific genetic marker tet genes. Additionally, all of the isolated strains were phenotypically characterized by their response to gastro-intestinal stresses and the MIC determination of tetracycline. In the same individual, our results showed a turnover of the bifidobacteria dominant population not only at species but also at strain levels. In addition, we found clonally related strains between twins. A minority of strains were tolerant to gastric (6%) and intestinal (16%) stresses. Thirteen percent of the strains were resistant to tetracycline. This work is original as it provides insights at the strain level of the early life in vivo dynamics of gut microbiota bifidobacteria in preterm neonates. It highlights the need to take into consideration the fluctuation of bifidobacteria populations that may occur for one individual.

Predicting Factors of Protracted Intestinal Failure in Children with Gastroschisis.

OBJECTIVE: To identify prenatal and neonatal predictors of short bowel syndrome-related intestinal failure (SBS-IF) in gastroschisis. STUDY DESIGN: This retrospective study included all patients with gastroschisis born between 2000 and 2017 who were enrolled in our home parenteral nutrition program, and all patients with gastroschisis born in our institution who survived 2 weeks, during the same time period. Prenatal ultrasound features, neonatal status, anatomic features, oral feeding, and parenteral nutrition dependency were analyzed. RESULTS: Among 180 patients, 35 required long-term parenteral nutrition (SBS-IF group) and 145 acquired full oral feeding within 6 months (oral feeding group). The mean follow-up was 7.9 years (IQR, 1.6-17.5 years) and 5.0 years (IQR, 0.1-18.2 years), respectively. Both bowel matting (OR, 14.23; 1.07-16.7; P = .039) and secondarily diagnosed atresia or stenosis (OR, 17.78; 3.13-100.98; P = .001) were independent postnatal predictors of SBS-IF. Eighteen children (51% of the SBS-IF group) were still dependent on artificial nutrition at the last follow-up. patients with SBS-IF who achieved full oral feeding had a median residual small-bowel length of 74 cm (IQR, 51-160 cm) vs 44 cm (IQR, 10-105 cm) for those still dependent on artificial nutrition (P = .02). An initial residual small bowel length of more than 50 cm was the best predictive cut-off for nutritional autonomy, with a sensitivity of 67% and a specificity of 100%. CONCLUSIONS: Bowel matting, complex gastroschisis, and secondary intestinal obstruction were associated with SBS-IF in gastroschisis. For patients with SBS-IF, a small bowel length of more than 50 cm was predictive of secondary nutritional autonomy.

Faecal calprotectin and gut microbiota do not predict enteropathy in very preterm infants.

AIM: Very preterm birth is associated with a high risk of enteropathies. Diagnosis is challenging, especially in mild forms, leading to unnecessary periods of cessation of enteral feeding. This study aimed at establishing a prognosis score of enteropathy combining clinical parameters and faecal calprotectin concentration. METHODS: This prospective multicentric study included preterm neonates born at a gestational age of 33 weeks or less. Stools were collected weekly until hospital discharge, and daily in case of digestive events for calprotectin measurement (ELISA and immunochromatography) and microbiota analyses (16S rRNA gene sequencing). RESULTS: Among the 121 neonates included, 21 experienced at least one episode of enteropathy, mainly mild forms. By ELISA testing, median faecal calprotectin was 88 (8-798) µg/g faeces. No statistically significant association was found between the outset of enteropathy and maternal and neonatal characteristics, and calprotectin levels. The agreement between ELISA and immunochromatography assay was moderate (intra-class correlation coefficient 0.58, 95%CI [0.47-0.66]). Comparison of species diversity and relative bacterial abundance profiles between infants with or without enteropathy revealed no specific alterations associated with enteropathy. CONCLUSION: The study failed to propose a prognostic score of enteropathy, probably due the large inter- and intra-individual variability of faecal calprotectin in very preterm neonates.

Early surgical management for giant omphalocele: Results and prognostic factors.

OBJECTIVES: Giant omphalocele often represents a major surgical challenge and is reported with high mortality and morbidity rates. The aim of this study was to assess the outcome of neonates with giant omphalocele managed with early operative surgical treatment, and subsequently to identify possible factors that could alter the prognosis. METHODS: We reviewed the medical records of 29 consecutive newborns with prenatally diagnosed giant omphalocele. In these cases one of two procedures had been performed: either staged closure after silo, or immediate closure with a synthetic patch. The cases were separated into 2 groups: Isolated giant omphalocele (IO group) and giant omphalocele associated with malformation (NIO group). RESULTS: Infants in the IO group had a lower size of the omphalocele (p<0,001), a shorter hospital stay (95 days [45-915] vs. 41.5 days [10-110] p= 0, 02), and a shorter median ventilation length (10 days [1-33] vs. 27, 5 [6-65] p = 0, 05). In the NIO group, 5 cases displayed a significantly more difficult course than the others. They were compared to the remaining cases for prenatal and anatomic features. Four factors associated with greater morbidity were identified: CONCLUSIONS: Isolated omphalocele, even containing the whole liver, has a very good prognosis with early surgical treatment. Without associated anomalies, 95% of giant omphaloceles can be discharged with a median of 41.5 days in hospital. However, associated anomalies (especially cardiopathies) may burden the prognosis and should be both carefully assessed during pregnancy and taken into account in parental information. TYPE OF STUDY: Retrospective Study LEVEL OF EVIDENCE: Level I.

Segmental volvulus in the neonate: A particular clinical entity.

BACKGROUND: Complete intestinal volvulus is mainly related to congenital anomalies of the so-called intestinal malrotation, whereas segmental volvulus appears as a distinct entity, mostly observed during the perinatal period. Because these two situations are still lumped together, the aim of this study was to describe the particular condition of neonatal segmental volvulus. STUDY DESIGN: We analyzed the circumstances of diagnosis and management of 17 consecutives neonates operated for segmental volvulus more than a 10-year period in a single institution. During the same period, 19 cases of neonatal complete midgut volvulus were operated. RESULTS: Prenatal US exam anomalies were observed in 16/17 (94%) of segmental volvulus, significantly more frequently than in complete volvulus (p=0.003). Intestinal malposition was described peroperatively in all cases of complete volvulus, but also in 4/17 segmental volvulus (23%). Intestinal resection was performed in 88% of segmental volvulus when only one extensive intestinal necrosis was observed in complete volvulus. Parenteral nutrition was required in all patients with segmental volvulus with a median duration of 50days (range 5-251). CONCLUSION: Segmental volvulus occurs mainly prenatally and leads to fetal ultrasound anomalies. This situation, despite a limited length of intestinal loss, is associated to significant postnatal morbidity. TYPE OF THE STUDY: Treatment study. LEVEL OF EVIDENCE: Level IV.