Probiotic Use and Safety in the Neonatal Intensive Care Unit: A Matched Cohort Study

Journal of Pediatrics • July 2020

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Gray KD, Messina JA, Cortina C, Owens T, Fowler M, Foster M, Gbadegesin S, Clark RH, Benjamin DK, Zimmerman KO, Greenberg RG

This study sought to determine the prevalence of probiotic administration in infants born preterm over time, as well as the association between probiotic administration and select adverse outcomes. Probiotic use increased over the study period and varied among neonatal intensive care units. Probiotic administration was associated with a decrease in NEC and death, and an increase in Candida infection, but no increase in bloodstream infection or meningitis.

Authors’ response to thrombocytopenia following exchange transfusion in neonates

Journal of Perinatology • July 2020

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Wolf MF, Childers J, Gray KD, Chivily C, Glenn M, Jones L, Kpa M, McMannen T, Reyes I, Zimmerman KO, Clark RH, Greenberg RG

A letter from the author in response to comment on “Exchange transfusion safety and outcomes in neonatal hyperbilirubinemia.”

Medications and In-hospital Outcomes in Infants Born at 22-24 Weeks Gestation

Journal of PerinatologyFebruary 2020

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Puia-Dumitrescu M, Younge N, Benjamin DK, Lawson K, Hume C, Hill K, Mengistu J, Wilson A, Zimmerman ZO, Ahmad K, Greenberg RG; on behalf of the Best Pharmaceuticals for Children Act – Pediatric Trials Network

This study evaluated the most commonly used medications and in-hospital morbidities and mortality in infants born 22-24 weeks of gestation. It was a multicenter retrospective cohort study of infants born 22-24 weeks of gestation, from 2006-2016, without major congenital anomalies and with available medication data obtained from neonatal intensive care units managed by the Pediatrix Medical Group. A large number of medications were used in periviable infants. There was a high prevalence of in-hospital morbidities, and survival of this population increased over the study period.

Impact of Gastrostomy Tube Placement on Short-Term Weight Gain in Hospitalized Premature Infants

Journal of Parenteral and Enteral Nutrition • February 2020

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Puia-Dumitrescu M, Benjamin DK Sr, Smith PB, Greenberg RG, Abuzaid N, Andrews W, Chellani K, Gupta A, Price D, Williams C, Malcolm WF, Clark RH, Zimmerman KO

Gastrostomy tube (G-tube) placement is a long-term alternative to oral or nasogastric feeding for premature infants who cannot safely feed orally or need supplemental nutrition for growth. We compared daily weight changes for G-tube infants 14 and 30 days preplacement and postplacement, excluding the first 7 days post-G-tube insertion. We also estimated a treatment effect model in which infants with a G-tube were matched 1:1 to untreated controls based on propensity scores; main outcome was the average treatment effect (weight gain) for treated infants during the 7, 14, or 30 days immediately prior to discharge.

Validation and human factor analysis study of an infant weight estimation device

BMC Pediatrics • January 2020

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Abdel-Rahman SM, Paul IM, Delmore P, Chen JY, Mills M, Greenberg RG, on behalf of the Best Pharmaceuticals for Children Act – Pediatric Trials Network

Weight is critical for the medical management of infants; however, scales can be unavailable or inaccessible in some practice settings. We recently developed and validated a robust infant weight estimation method based on chest circumference (CC) and head circumference (HC). Among 486 infants enrolled, predicted weight was within 10 and 15% of actual weight in 86 and 99%, of infants. This device can be used to estimate weight in infants when calibrated scales are impractical or unavailable.

Population pharmacokinetics of sildenafil in extremely premature infants

British Journal of Clinical Pharmacology • December 2019

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Gonzalez D, Laughon MM, Smith PB, Ge S, Ambalavanan N, Atz A, Sokol GM, Hornik CD, Stewart D, Mundakel G, Poindexter BB, Gaedigk R, Mills M, Cohen-Wolkowiez M, Martz K, Hornik CP

We performed a multicentre, open-label trial to characterize the pharmacokinetics (PK) of sildenafil in infants ≤28 weeks gestation and < 365 postnatal days (cohort 1) or < 32 weeks gestation and 3-42 postnatal days (cohort 2). We successfully characterized the PK of sildenafil and DMS in premature infants and applied the model to inform dosing for a follow-up, phase II study.

Risk of Development of Treated Retinopathy of Prematurity in Very Low Birth Weight Infants

Journal of Perinatology • September 2019

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Gonski S, Hupp S, Cotton CM, Clark R, Laughon M, Watt K, Hornik CP, Smith PB, Greenberg RG

Aim to quantify the risk of treatment for retinopathy of prematurity (ROP) among infants meeting current U.S. screening guidelines. Among infants ≤1500 g birth weight or ≤30 weeks gestation screened for ROP from 2006-2015, we developed a risk prediction model to identify infants treated for ROP. Applied to 6,127 infants discharged in 2016, our model had 97.9% sensitivity, 63.3% specificity, positive predictive value of 4.0%, and negative predictive value of 99.9%. Large numbers of infants at low risk of developing ROP are required to undergo screening. Refining current ROP guidelines may reduce unnecessary examinations.

Medication Use in the Neonatal Intensive Care Unit and Changes from 2010 to 2018

The Journal of Pediatrics January 2022

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Stark A, Smith PB, Hornik CP, Zimmerman KO, Hornik CD, Pradeep S, Clark RH, Benjamin DK, Laughon M, Greenberg RG.

The goal of this study was to provide up-to-date medication prescribing patterns in US neonatal intensive care units (NICUs) and to examine trends in prescribing patterns over time. The most frequently prescribed medications included ampicillin, gentamicin, caffeine citrate, poractant alfa, morphine, vancomycin, furosemide, fentanyl, midazolam, and acetaminophen. Of the top 50 medications used in infants with extremely low birth weight, only 20 (40%) are FDA-labeled for use in infants. Trends of medication use in the NICU change substantially over time. It is imperative to identify changes in medication use in the NICU to better inform further prospective studies.

Comparative efficacy and safety of late surfactant preparations: a retrospective study

Journal of Perinatology November 2021

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Lane MD, Kishnani S, Udemadu O, Danquah SE, Treadway RM, Langman A, Balevic S, Jackson WM, Laughon M, Hornik CP, Greenberg RG, Clark RH, Zimmerman KO

This study sought to characterize the use, efficacy, and safety of poractant alfa and calfactant surfactants compared to beractant in preterm infants receiving late surfactant. Compared to beractant, there is no evidence of overall superior efficacy or safety of poractant alfa.

The use of supplemental hydrocortisone in the management of persistent pulmonary hypertension of the newborn

Journal Perinatology April 2021

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Aleem S, Robbins C, Murphy B, Elliott S, Akinyemi C, Paredes N, Tolia VN, Zimmerman KO, Goldberg RN, Benjamin DK, Greenberg RG

This study aimed to characterize the association between hydrocortisone receipt and hospital outcomes of infants with persistent pulmonary hypertension of the newborn (PPHN). There was no association between hydrocortisone receipt and death, CLD, or oxygen at discharge in our cohort. Prospective studies are needed to evaluate the effectiveness of hydrocortisone in infants with PPHN.