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Acute Responses to Diuretic Therapy in Extremely Low Gestational Age Newborns: Results from the Prematurity and
Carol J Blaisdell1, James Troendle2, Anne Zajicek3
1Division of Lung Diseases, National, Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD.
Insights
Diuretics did not significantly improve respiratory status in extremely premature infants. Further research is needed to assess diuretic safety and efficacy in neonatal intensive care units.
Area of Science:
- Neonatal Medicine
- Pediatric Pulmonology
- Pharmacology
Background:
- Extremely premature infants often experience respiratory challenges.
- Diuretics are sometimes used in neonatal intensive care units (NICUs) to manage fluid balance and respiratory support.
- The efficacy of diuretics in improving respiratory status in this population is not well-established.
Purpose of the Study:
- To investigate whether diuretics improve daily respiratory status in extremely premature infants.
- To compare respiratory status changes in infants exposed to diuretics versus those not exposed.
Main Methods:
- Analysis of the Prematurity and Respiratory Outcomes Program (PROP) cohort study data.
- Inclusion of 835 infants with gestational ages (GA) of 230/7-286/7 weeks.
- Examination of daily medication and respiratory support records up to 34 weeks postmenstrual age.
Main Results:
- Infants receiving diuretics had lower mean GA and birth weight.
- Diuretic-exposed infants were significantly more likely to require higher levels of respiratory support daily, even after adjusting for baseline characteristics.
- This suggests diuretics may be associated with increased respiratory support needs.
Conclusions:
- Current analysis does not support diuretics substantially improving respiratory status in extremely premature infants.
- Further studies on the safety and efficacy of diuretics in this vulnerable population are warranted.
- The findings highlight the need for careful consideration of diuretic use in NICU settings.
Objective:
To determine if daily respiratory status improved more in extremely low gestational age (GA) premature infants after diuretic exposure compared with those not exposed in modern neonatal intensive care units.
Study Design:
The Prematurity and Respiratory Outcomes Program (PROP) was a multicenter observational cohort study of 835 extremely premature infants, GAs of 230/7-286/7 weeks, enrolled in the first week of life from 13 US tertiary neonatal intensive care units. We analyzed the PROP study daily medication and respiratory support records of infants ≤34 weeks postmenstrual age. We determined whether there was a temporal association between the administration of diuretics and an acute change in respiratory status in premature infants in the neonatal intensive care unit, using an ordered categorical ranking of respiratory status.
Results:
Infants in the diuretic exposed group of PROP were of lower mean GA and lower mean birth weight (P < .0001). Compared with infants unexposed to diuretics, the probability (adjusted for infant characteristics including GA, birth weight, sex, and respiratory status before receiving diuretics) that the exposed infants were on a higher level of respiratory support was significantly greater (OR, >1) for each day after the initial day of diuretic exposure.
Conclusions:
Our analysis did not support the ability of diuretics to substantially improve the extremely premature infant's respiratory status. Further study of both safety and efficacy of diuretics in this setting are warranted.
Trial Registration:
Clinicaltrials.gov: NCT01435187.
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