The care of the patients with hipoplastic left heart syndrome in places of social and economic vulneability. An ethical analysis

The birth of a child means hope and joy, particularly for the parents and the healthcare team. When this child is born with a severe malformation and a poor prognosis, as in the case of hypoplastic left heart syndrome, the scenario is one of great uncertainty and emotional suffering. The role of the health team becomes fundamental for the identification of conflicts of values and for the search for shared decisions that promote the best benefit to the child. When the diagnosis is made during fetal life, it is necessary to develop counseling strategies appropriate to the context of each family. In places with limited care resources, precarious prenatal care and short temporal conditions, the recommended counseling is compromised. Indication of treatment requires technical competence and a detailed analysis of ethical issues, and consultation with institutional clinical bioethics services or commissions is important. The article proposes to address the moral conflicts of two clinical cases and the respective bioethical analysis that involves principles and values in contexts of vulnerability and uncertainty, contrasting two situations where the indication of treatment was based on accessibility to treatment.

Acute effects of vasoactive medications in patients with parallel circulation awaiting hybrid or Norwood procedure

Background

Vasoactive medications are frequently used in the preoperative stage to balance the pulmonary and systemic blood flow. However, not much is known about the effects of these agents during this stage.

Aims

The primary objective of this study was to characterize the acute effects of vasoactive medications in children with parallel circulation before either the hybrid or Norwood procedure.

Setting and Designs

This is a single-center, cross-sectional, retrospective study.

Methods

Hemodynamic and systemic oxygen delivery data were captured from patients' vital signs, arterial blood gases, near-infrared spectroscopy monitoring (NIRS). Data for each patient were collected before the initiation of a vasoactive medication and again 6 h after.

Statistical Analysis

Data were analyzed using paired t-tests, and analysis of covariance.

Results

A total of 139 patients were identified. After data extraction the following patients were included before the initial intervention: 7 were on milrinone, 22 were on dopamine, and 17 were on dobutamine. Dopamine and dobutamine were found to significantly increase systolic blood pressure. Only dopamine increased pH (mean difference 0.04), decreased paCO2 (mean difference -7.1), decreased lactate (mean difference -0.6 mmol/L), and decreased in bedside Qp: Qs (mean difference -7.5) after continuous infusion for 6 h. Milrinone was not associated with any significant hemodynamic change.

Conclusion

In this study, dopamine was independently associated with improvement in markers of systemic oxygen delivery 6 h after initiation. Dobutamine and dopamine were associated with increased in blood pressure. Well-powered studies are required to detect changes in lactate and NIRS.

Intraoperative Steroid Use and Outcomes Following the Norwood Procedure: An Analysis of the Pediatric Heart Network's Public Database

OBJECTIVE

Data supporting the use of perioperative steroids during cardiac surgery are conflicting, and most pediatric studies have been limited by small sample sizes and/or diverse cardiac diagnoses. The objective of this study was to determine if intraoperative steroid administration improved outcomes following the Norwood procedure.

DESIGN

A retrospective analysis was performed on the 549 neonates who underwent a Norwood procedure in the publicly available datasets from the Pediatric Heart Network's Single Ventricle Reconstruction trial. Groups were compared to determine if outcomes differed between intraoperative steroid recipients (n = 498, 91%) and nonrecipients (n = 51, 9%).

SETTING

Fifteen North American centers.

SUBJECTS

Infants enrolled in the Single Ventricle Reconstruction trial.

INTERVENTIONS

None.

MEASUREMENTS AND MAIN RESULTS

Baseline characteristics and intraoperative variables were similar between groups with the exception of a shorter duration of cross clamp and cardiopulmonary bypass time in the group that received steroids. Subjects who did not receive intraoperative steroids had improved hospital survival (94% vs 83%, p = 0.03) but longer ICU stays (16 d; interquartile range, 12-33 vs 14 d; interquartile range, 9-28; p = 0.04) and hospital stays (29 d; interquartile range, 21-50 vs 23 d; interquartile range, 15-40; p = 0.01) than steroid recipients. In multivariate analysis, lengths of stay associations were no longer significant, but hospital survival trended toward favoring the nonsteroid group with an odds ratio of 3.52 (95% CI, 0.98-12.64; p = 0.054).

CONCLUSIONS

In the large multicentered Single Ventricle Reconstruction trial, there was widespread use of intraoperative steroids. Intraoperative steroid administration was not associated with an improvement in outcomes and may be associated with a reduction in hospital survival in neonates undergoing the Norwood procedure. This study highlights the need for a randomized control trial.