Adverse events in the postoperative period of cardiac surgery in a pediatric intensive care unit: the contribution of the VIS score and the RACHS-1

OBJECTIVE

To evaluate the occurrence of adverse events in the postoperative period of cardiac surgery in a pediatric intensive care unit and to find any patient characteristics that can predict such events.

METHODS

This was a historical cohort study of patients recovering in the pediatric intensive care unit for the first 7 days after cardiac surgery between April and December 2019, by reviewing the medical records. The following were reviewed: demographic, clinical, and laboratory characteristics; patient severity scores; and selected adverse events, grouped into device-related, surgical, and nonsurgical.

RESULTS

A total of 238 medical records were included. At least one adverse event occurred in 110 postoperative patients (46.2%). The total number of adverse events was 193 (81%). Vascular catheters were the most common cause, followed by cardiac arrest, bleeding, and surgical reexploration. In the univariate analysis, the vasoactive-inotropic score (VIS), Risk Adjustment in Congenital Heart Surgery (RACHS-1) score, age, Pediatric Index of Mortality (PIM-2), cardiopulmonary bypass and aortic clamping duration were significantly associated with adverse events. In the multivariate analysis, VIS ≥ 20 (OR 2.90; p = 0.004) and RACHS-1 ≥ 3 (OR 2.11; p = 0.019) were significant predictors, while age and delayed sternal closure showed only trends toward significance. To predict the occurrence of adverse events from VIS and RACHS-1, the area under the curve was 0.73 (95%CI 0.66 - 0.79).

CONCLUSION

Adverse events were quite frequent in children after cardiac surgery, especially those related to devices. The VIS and RACHS-1, used together, predicted the occurrence of adverse events well in this pediatric sample.

Exact Gestational Age, Term Versus Early Term, Is Associated with Different Breastfeeding Success Rates in Mothers Delivered by Elective Cesarean Section

Objectives: The study was intended to verify the association between the gestational age of newborns classified as term and the success of breastfeeding in babies born by elective cesarean section. Also, to analyze how the variability of gestational age within the term influences breastfeeding. Materials and Methods: Retrospective study of a cohort, which included full-term newborns and their mothers, whose deliveries occurred by elective cesarean section. Among the inclusion criteria are delivery due to elective cesarean section and minimum gestational age of 37 weeks. The database consisted of medical birth information and interviews with mothers. Results: This study included 954 full-term newborns born by elective cesarean section. Exclusive breastfeeding at 3 months and being breastfed at 6 months showed a statistically significant association in the correlation with the variability of gestational age. There was a statistically significant association between exclusive breastfeeding at 3 months and breastfeeding at 6 months in the correlation between early term and full term. The trend test showed a significant progressive in the breastfeeding curve versus gestational age. Conclusion: Full-term newborns show better results of exclusive breastfeeding at 3 months and continued breastfeeding at 6 months, compared with those born at early term. Gestational age, even in term, has an influence on the success of breastfeeding in newborns undergoing elective cesarean delivery.

Factors Associated With Breastfeeding Very Low Birth Weight Infants at Neonatal Intensive Care Unit Discharge: A Single-Center Brazilian Experience

BACKGROUND

The mothers of very low birth weight infants face many challenges to achieve breastfeeding at hospital discharge, especially during long stays.

RESEARCH AIM

The aim of this study was to describe the incidence and factors associated with breastfeeding rates (exclusive or with formula) at discharge, for very low birth weight infants, in a private Neonatal Intensive Care Unit in southern Brazil.

METHODS

We conducted a prospective longitudinal cohort study of infants (N = 335) with very low birth weight and/or less than 30 weeks gestational age, who survived to discharge and had no contraindication to mother's own milk. Participants were initially divided into three groups (exclusive breastfeeding, some breastfeeding, and no breastfeeding) based on their feedings at discharge; however, later, two groups were analyzed (any breastfeeding, no breastfeeding).

RESULTS

Most (93.4%; n = 313) were breastfeeding directly at least once daily at discharge, of which 16.1% (n = 54) were receiving exclusive mother's milk and 77.3% (n = 259) mixed feeding (mother's milk and formula). Breastfeeding at discharge was associated with gestational age ≥ 28 weeks, higher birth weight, not developing neonatal sepsis or bronchopulmonary dysplasia during the hospital stay, shorter lengths of stay, and lower weight at discharge. After Poisson regression, breastfeeding at discharge was associated only with a shorter length of stay (RR 0.98; CI 95% [0.95, 0.99], p < .05).

CONCLUSIONS

In our single unit experience in Brazil, most infants were breastfeeding at discharge. NICU staff might address mothers of infants who have prolonged hospitalization with specific strategies. Mothers and infants at risk can be identified early and personalized interventions can be developed for improving breastfeeding rates at discharge.