Background: Bronchodilator responses among preterm infants are heterogeneous. Bedside measurements may identify responders. Study design: Respiratory measurements (Resistance, Compliance, FiO2) and pulse oximetry (SpO2) patterns were downloaded from infants <30 weeks gestational age during the first 2 months of life. Mechanically ventilated infants who received albuterol were included (n = 33). Measurements were compared before and after first albuterol. Secondary analyses assessed subsequent doses. Results: Median gestation and birthweight were 25 3/7 weeks and 730 g, respectively. Mean Resistance decreased post-albuterol (p = 0.007). Sixty-eight percent of infants were responders based on decreased Resistance. Compliance and FiO2 did not significantly differ. Percent time in hypoxemia (SpO2< 85%) decreased post albuterol (p < 0.02). In responders, Resistance changes diminished with subsequent administration (all p = 0.01). Conclusions: Ventilator resistance decreased in two-thirds of preterm infants, consistent with studies that utilized formal pulmonary function testing. Albuterol had a variable effect on delivered FiO2; however, hypoxemia may be useful in evaluating albuterol response.
|Number of pages||7|
|Journal||Journal of Perinatology|
|State||Published - Jul 2021|
Bibliographical noteFunding Information:
Funding: The study was funded in part by: (1) The Gerber Foundation (EGA, PI) (2) Kentucky Children’s Hospital Children’s Miracle Network Research Fund (EGA, PI), (3) University of Kentucky’s National Center for Advancing Translational Sciences, UL1RR033173. TMR is supported by NIH K08HL133459-04 grant.
© 2021, The Author(s), under exclusive licence to Springer Nature America, Inc.
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health
- Obstetrics and Gynecology