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Arch Dis Child Fetal Neonatal Ed ; 106(6): 649-656, 2021 Nov.
Article in English | MEDLINE | ID: mdl-33958387

ABSTRACT

OBJECTIVE: To determine the difference in rate of weight gain from birth to 5 years based on exposure to maternal group B streptococcal (GBS) intrapartum antibiotic prophylaxis (IAP). DESIGN: Retrospective cohort study of 13 804 infants. SETTING: Two perinatal centres and a primary paediatric care network in Philadelphia. PARTICIPANTS: Term infants born 2007-2012, followed longitudinally from birth to 5 years of age. EXPOSURES: GBS IAP defined as penicillin, ampicillin, cefazolin, clindamycin or vancomycin administered ≥4 hours prior to delivery to the mother. Reference infants were defined as born to mothers without (vaginal delivery) or with other (caesarean delivery) intrapartum antibiotic exposure. OUTCOMES: Difference in rate of weight change from birth to 5 years was assessed using longitudinal rate regression. Analysis was a priori stratified by delivery mode and adjusted for relevant covariates. RESULTS: GBS IAP was administered to mothers of 2444/13 804 (17.7%) children. GBS IAP-exposed children had a significantly elevated rate of weight gain in the first 5 years among vaginally-born (adjusted rate difference 1.44% (95% CI 0.3% to 2.6%)) and caesarean-born (3.52% (95% CI 1.9% to 5.2%)) children. At 5 years, the rate differences equated to an additional 0.24 kg among vaginally-born children and 0.60 kg among caesarean-born children. CONCLUSION: GBS-specific IAP was associated with a modest increase in rate of early childhood weight gain. GBS IAP is an effective intervention to prevent perinatal GBS disease-associated morbidity and mortality. However, these findings highlight the need to better understand effects of intrapartum antibiotic exposure on childhood growth and support efforts to develop alternate prevention strategies.


Subject(s)
Anti-Bacterial Agents , Child Development/drug effects , Delivery, Obstetric , Infectious Disease Transmission, Vertical/prevention & control , Obstetric Labor Complications , Pediatric Obesity , Streptococcal Infections/prevention & control , Anti-Bacterial Agents/administration & dosage , Anti-Bacterial Agents/adverse effects , Anti-Bacterial Agents/classification , Antibiotic Prophylaxis/adverse effects , Antibiotic Prophylaxis/methods , Child, Preschool , Delivery, Obstetric/adverse effects , Delivery, Obstetric/methods , Delivery, Obstetric/statistics & numerical data , Female , Humans , Infant, Newborn , Longitudinal Studies , Male , Maternal Exposure/adverse effects , Obstetric Labor Complications/microbiology , Obstetric Labor Complications/prevention & control , Pediatric Obesity/diagnosis , Pediatric Obesity/etiology , Pediatric Obesity/prevention & control , Pregnancy , Weight Gain/drug effects
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