Objectives: Compare the impact of initial extubation to positive airway pressure versus high-flow nasal cannula on postoperative outcomes in neonates and infants after congenital heart surgery. Design: Retrospective cohort study with propensity-matched analysis. Setting: Cardiac ICU within a tertiary care children’s hospital. Patients: Patients less than 6 months old initially extubated to either high-flow nasal cannula or positive airway pressure after cardiac surgery with cardiopulmonary bypass were included (July 2012 to December 2015). Interventions: None. Measurements and Main Results: Of 258 encounters, propensity matching identified 49 pairings of patients extubated to high-flow nasal cannula versus positive airway pressure. Extubation failure was 12% for all screened encounters. After matching, there was no difference in extubation failure rate between groups (positive airway pressure 16% vs high-flow nasal cannula 10%; p = 0.549). However, compared with high-flow nasal cannula, patients initially extubated to positive airway pressure experienced greater resource utilization: longer time to low-flow nasal cannula (83 vs 28 hr; p = 0.006); longer time to room air (159 vs 110 hr; p = 0.013); and longer postsurgical hospital length of stay (22 vs 14 d; p = 0.015). Conclusions: In this pediatric cohort, primary extubation to positive airway pressure was not superior to high-flow nasal cannula with respect to prevention of extubation failure after congenital heart surgery. Compared with high-flow nasal cannula, use of positive airway pressure was associated with increased hospital resource utilization. Prospective initiatives aimed at establishing best clinical practice for postoperative noninvasive respiratory support are needed.
Pericardial effusion can be a life-threatening complication in children after cardiac surgery. Percutaneous pericardiocentesis is associated with rare, but serious complications. This retrospective study describes our experience with a novel, long-axis in-plane real-time ultrasound (US)-guided technique for postoperative pericardial effusion drainage in small children. Ten out of sixteen procedures were performed within 14 days of cardiac surgery at a median postoperative day 12 (IQR 2, 99). Median age was 2.7 months (IQR 0.4124) and weight 4.5 kg (IQR 2.5, 41.6). All but one procedure required a single attempt. Fourteen out of sixteen procedures had subxiphoid approach, and two were apical. Median initial drainage was 9 mL/kg (IQR 4.5, 27). Fifty percent of effusions were serous, 25 % chylous, and the remainder bloody. There were no reported complications. This study demonstrates a novel, long-axis pericardiocentesis technique that allows for an easy and safe needle entry into the pericardial space for small children in the early postoperative period.
Extracorporeal cardiopulmonary resuscitation (eCPR) has been well described as a rescue therapy in refractory cardiac arrest among patients with congenital heart disease. The purpose of this retrospective analysis of data from the Extracorporeal Life Support Organization was to evaluate outcomes of eCPR in patients with structurally normal hearts and to identify risk factors that may contribute to mortality. During the study period, 1,431 patients met inclusion criteria. Median age was 16 years. Overall survival to hospital discharge was 32%. Conditional logistic regression demonstrated an independent survival benefit among smaller patients, patients with a lower partial pressure of carbon dioxide (PaCO2) on cannulation, and those with a shorter duration from intubation to eCPR cannulation. A diagnosis of sepsis was independently associated with a nearly threefold increase in odds of mortality, whereas the diagnosis of myocarditis portended a more favorable outcome. Neurologic complications, pulmonary hemorrhage, disseminated intravascular coagulation, CPR, pH less than 7.20, and hyperbilirubinemia after eCPR cannulation were independently associated with an increase in odds of mortality. When utilizing eCPR in patients with structurally normal hearts, a diagnosis of sepsis is independently associated with mortality, whereas a diagnosis of myocarditis is protective. Neurologic complications and pulmonary hemorrhage while on extracorporeal membrane oxygenation (ECMO) are independently associated with mortality.
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