Objectives: To describe the epidemiology of extubation failure and identify risk factors for its occurrence in a multicenter population of neonates undergoing surgery for congenital heart disease. Study Design:We conducted a prospective observational study of neonates ≤ 30 days of age who underwent cardiac surgery at seven centers within the United States in 2015. Extubation failure was defined as reintubation within 72 hours of the first planned extubation. Risk factors were identified using multivariable logistic regression analysis and reported as odds ratios (OR) with 95% confidence intervals (CI). Multivariable logistic regression analysis was also conducted to examine the relationship between extubation failure and worse clinical outcome, defined as hospital length-of-stay in the upper 25% or operative mortality.

Recurrent hypoglycemia is a common problem among infants and children that is associated with several metabolic disorders and insulin-dependent diabetes mellitus. Although studies have reported a relationship between a history of juvenile hypoglycemia and psychological health problems, the direct effects of recurrent moderate hypoglycemia have not been fully determined. Thus, in this study, we used an animal model to examine the effects of recurrent hypoglycemia during the juvenile period on affective, social, and motor function (assessed under euglycemic conditions) across development. To model recurrent hypoglycemia, rats were administered 5 U/kg of insulin or saline twice per day from postnatal day (P)10 to P19. Body weight gain was retarded in insulin-treated rats during the treatment period, but recovered by the end of treatment. However, insulin-treated rats displayed increases in affective reactivity that emerged early during treatment and persisted after treatment into early adulthood. Specifically, insulin-treated pups showed increased maternal separation-induced vocalizations as infants, and an exaggerated acoustic startle reflex as juveniles and young adults. Moreover, young adult rats with a history of recurrent juvenile hypoglycemia exhibited increased fear-potentiated startle and increases in behavioral and hormonal responses to restraint stress. Some of these effects were sex-dependent. The changes in affective behavior in insulin-exposed pups were accompanied by decreases in adolescent social play behavior. These results provide evidence that recurrent, transient hypoglycemia during juvenile development can lead to increases in fear-related behavior and stress reactivity. Importantly, these phenotypes are not reversed with normalization of blood glucose and may persist into adulthood.

In this multicenter cohort of neonates who underwent cardiac surgery, the Vasoactive-Ventilation-Renal score was a reliable predictor of postoperative outcome and outperformed more traditional measures of disease complexity and severity.

Introduction:Reliable predictors of extubation readiness are needed and may reduce morbidity related to extubation failure. We aimed to examine the relationship between changes in pre-extubation near-infrared spectroscopy measurements from baseline and extubation outcomes after neonatal cardiac surgery.Materials and Methods:In this retrospective cross-sectional multi-centre study, a secondary analysis of prospectively collected data from neonates who underwent cardiac surgery at seven tertiary-care children’s hospitals in 2015 was performed. Extubation failure was defined as need for re-intubation within 72 hours of the first planned extubation attempt. Near-infrared spectroscopy measurements obtained before surgery and before extubation in patients who failed extubation were compared to those of patients who extubated successfully using t-tests.Results:Near-infrared spectroscopy measurements were available for 159 neonates, including 52 with single ventricle physiology. Median age at surgery was 6 days (range: 1–29 days). A total of 15 patients (9.4 %) failed extubation. Baseline cerebral and renal near-infrared spectroscopy measurements were not statistically different between those who were successfully extubated and those who failed, but pre-extubation cerebral and renal values were significantly higher in neonates who extubated successfully. An increase from baseline to time of extubation values in cerebral oximetry saturation by ≥ 5 % had a positive predictive value for extubation success of 98.6 % (95%CI: 91.1–99.8 %).Conclusion:Pre-extubation cerebral near-infrared spectroscopy measurements, when compared to baseline, were significantly associated with extubation outcomes. These findings demonstrate the potential of this tool as a valuable adjunct in assessing extubation readiness after paediatric cardiac surgery and warrant further evaluation in a larger prospective study.

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Purpose: The residency interview is the most important factor for residency program directors when deciding on how to rank medical student applicants. With the residency match becoming increasingly competitive, it is more important than ever for students to perform well in this high-stakes interview. Video-stimulated recall (VSR) has been shown to be an effective tool for facilitating reflection on performance and behaviors. As such, we conducted mock interviews with and without video-stimulated recall to gauge its effect on student perceptions of preparedness and confidence for residency interviews. Methods: Students completed a pre-mock interview survey followed by a video recorded interview with faculty. All students received verbal feedback on their performance immediately after the interview. Students were randomized to receive their feedback from their faculty interviewer either while reviewing their video or without the video review. Post-mock interview and post-residency interview surveys were completed. Wilcoxon signed-rank was used to compare median aggregate scores between pre/post surveys. Wilcoxon rank-sum was used to compare pre/post aggregate scores between the video review vs. no-video review groups. Results: 33 of 70 students participated (47%). 14 students (42%) reviewed their video and 19 (58%) received feedback without video. Likert scores for pre-and post-mock interview and post-residency interview surveys revealed median aggregate scores of 10 (interquartile range, or IQR=8,11), 12 (IQR=12,13), and 13 (IQR=12,13) (p <0.001, p<0.001). The change in median aggregate score between pre/post-mock interview surveys in the video review group vs. no-video review group was 3 (IQR=3,5) and 1 (IQR=0,3) (p<0.01) and from pre-mock interview to post-residency interview in the video review vs. no-video review groups was 3 (IQR=3,5) and 2 (IQR=1,4) (p=0.04). Conclusions: The mock interview for residency application improved students' perceptions of preparedness and confidence. Reviewing the video of the interview while receiving verbal feedback increased students' confidence in their interview skills.

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Athabaskan Brainstem Dysgenesis Syndrome (ABDS) is a nonlethal, homozygous HOXA1 mutation typically marked by central hypoventilation, sensorineural deafness, horizontal gaze palsy, and developmental delay. In this report, we present a case of a 27-month-old Navajo female with a new diagnosis of ABDS after multiple failed attempts at extubation following anesthesia in the setting of respiratory syncytial virus (RSV) bronchiolitis. Her case is significant because she lacks sensorineural hearing loss, a defining feature of previously documented cases thereby underscoring the challenges of diagnosing this disease. This case expands the ever-growing spectrum of homozygous HOXA1 mutations and demonstrates unique junctions for diagnosis of ABDS in the critical care setting in patients lacking key features of the disease.