Infants Born at Late Preterm Gestation: Management During the Birth Hospitalization.

To examine the admission practices, frequency of common clinical morbidities, and rates of medical intervention in infants born at 34-36 weeks gestational age (GA, late preterm). This retrospective, single institution, cohort study analyzed electronic health records of infants born late preterm from 2019 through 2021. Infants with anomalies necessitating neonatal intensive care unit admission were excluded. Analysis included descriptive and inferential statistics. The study included 1022 infants: 209 (21%) 34 weeks GA; 263 (26%) 35 weeks GA; and 550 (54%) 36 weeks GA. Sixty-three percent of infants at 35 weeks GA and 78% of infants of 36 weeks GA remained in well newborn care throughout the birth hospitalization; infants born at 34 weeks GA were ineligible for well newborn care. The need for respiratory support was 32%, 18% and 11% in infants of 34, 35, and 36 weeks GA, respectively. Supplemental tube feeds were administered in 55%, 24%, and 8% of infants of 34, 35, and 36 weeks GA, respectively. Most infants born at 34 weeks GA (91%) were placed in an incubator; this was less frequent in infants at 35 (37%) and 36 weeks (16%). Tachypnea, hypoglycemia, and hypothermia were noted in 40%, 61%, and 57% of infants, respectively. A subset of these infants (30% with tachypnea, 23% with hypoglycemia, 46% with hypothermia) required medical intervention for these abnormalities. This single center study provides an outlook on the care of infants born late preterm. Multi-center studies can contextualize these findings in order to develop clinical benchmarks and quality markers for this large population of infants.

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Conflicts of Interest The authors have no conflicts of interest relevant to this article to disclose.