IMPORTANCE Prolonged neonatal hypoglycemia is associated with poor long-term neurocognitive function. However, little is known about an association between early transient newborn hypoglycemia and academic achievement.OBJECTIVE To determine if early (within the first 3 hours of life) transient hypoglycemia (a single initial low glucose concentration, followed by a second value above a cutoff) is associated with subsequent poor academic performance. DESIGN, SETTING, AND PARTICIPANTSA retrospective population-based cohort study of all infants born between January 1, 1998, and December 31, 1998, at the University of Arkansas for Medical Sciences who had at least 1 recorded glucose concentration (a universal newborn glucose screening policy was in effect) was conducted. Medical record data from newborns with normoglycemia or transient hypoglycemia were matched with their student achievement test scores in 2008 from the Arkansas Department of Education and anonymized. Logistic regression models were developed to evaluate the association between transient hypoglycemia and school-age achievement test proficiency based on perinatal factors. Common hypoglycemia cutoffs of a glucose level less than 35 mg/dL (primary) and less than 40 and 45 mg/dL (secondary) were investigated. All 1943 normoglycemic and transiently hypoglycemic infants (23-42 weeks' gestation) were eligible for inclusion in the study. Infants with prolonged hypoglycemia, congenital anomalies, or chromosomal abnormalities were excluded from the study. EXPOSURE Hypoglycemia as a newborn. MAIN OUTCOMES AND MEASURESThe primary outcome was proficiency on fourth-grade literacy and mathematics achievement tests at age 10 years. We hypothesized a priori that newborns with early transient hypoglycemia would be less proficient on fourth-grade achievement tests compared with normoglycemic newborns.RESULTS Perinatal data were matched with fourth-grade achievement test scores in 1395 newborn-student pairs (71.8%). Transient hypoglycemia (glucose level <35, <40, and <45 mg/dL) was observed in 6.4% (89 of 1395), 10.3% (143 of 1395), and 19.3% (269 of 1395) of newborns, respectively. After controlling for gestational age group, race, sex, multifetal gestation, insurance status, maternal educational level and socioeconomic status, and gravidity, transient hypoglycemia was associated with decreased probability of proficiency on literacy and mathematics fourth-grade achievement tests. For the 3 hypoglycemia cutoffs, the adjusted odds ratios (95% CIs) for literacy were 0.49 (0.28-0.83), 0.43 (0.28-0.67), and 0.62 (0.45-0.85), respectively, and the adjusted odds ratios (95% CIs) for mathematics were 0.49 (0.29-0.82), 0.51 (0.34-0.78), and 0.78 (0.57-1.08), respectively.CONCLUSIONS AND RELEVANCE Early transient newborn hypoglycemia was associated with lower achievement test scores at age 10 years. Given that our findings are serious and contrary to expert opinion, the results need to be validated in other populations before universal newborn glucose screening should be adopted.

Our model supports implementing more restrictive guidelines for palivizumab prophylaxis. Palivizumab was cost-effective for some infants in an analysis that accounted for increased risk of severe asthma following respiratory syncytial virus infection.

Mitochondrial genome sequencing should be considered in patients with infantile hypertrophic cardiomyopathy.

Neonatal parenteral nutrition (PN) is readily available in many hospitals and plays an essential role in the management of sick and growing preterm and term infants. PN can be used as the sole source of nutrition support for infants who cannot be fed or as an adjunct to enteral feeding. Preterm infants are a particularly vulnerable population because they are born at a time, if they had remained in utero, of rapid intrauterine brain and body growth. The impact of early malnutrition can have long-lasting negative effects on central nervous system development and growth. Despite this, PN is often provided to preterm infants based on local traditions rather than experimental evidence. The quality of PN and its early initiation are critical in providing the most adequate substrates for appropriate development. This article reviews the energy and fluid requirements of infants and presents by component (protein, carbohydrates, lipids, minerals such as calcium and phosphorus, trace elements, and multivitamins) the available literature on neonatal PN and its complications. In addition, suggested guidelines for PN administration for preterm and term neonates are presented.