Abstract
Objective
To determine if the need for mechanical ventilation alters the association between prolonged patent ductus arteriosus (PDA) exposure and bronchopulmonary dysplasia (grades 2 and 3) (BPD).
Study Design
Observational study of 407 infants (<28 weeks’ gestation) with echocardiograms performed at planned intervals.
Results
Twelve percent (48/407) of study infants had BPD (grades 2 and 3). In a multivariable regression model, exposure to a moderate-to-large PDA shunt for ≥7 days was associated with an increased risk of BPD (grades 2 and 3) (from 16 to 35%: aRD = 19% (6, 32%), p < 0.005) when infants required ≥10 days of intubation (n = 170). In contrast, there was no significant association between prolonged PDA exposure and BPD when infants required ≤9 days of intubation (aRD = 4%) (−1, 10%) (n = 237).
Conclusions
Moderate-to-large PDAs are associated with an increased risk of BPD—but only when infants require intubation ≥10 days.
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Data availability
The datasets generated and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Acknowledgements
We would like to thank Drs. Mark Cocalis, Laura Robertson, Michael Brook, Anita Moon-Grady, and Shabnam Peyvandi for their expert help in reading and interpreting the echocardiograms. We would also like to thank Drs. Melissa Liebowitz and Sandy Johng for their help with sections of the data analysis.
Funding
This work was supported by grant from the U.S. Public Health Service National Heart, Lung and Blood Institute (HL109199) and a gift from the Jamie and Bobby Gates Foundation.
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We have no conflict of interests. Neither of the authors has any potential conflict of interest, real or perceived; Neither of the authors has any financial agreement with any company whose product figures prominently in the manuscript. There are no “sponsors” of this project. And there are no “sponsors” who have had a role in (1) study design; (2) the collection, analysis, and interpretation of data; (3) the writing of the report; and (4) the decision to submit the paper for publication. RIC wrote the first draft of the manuscript and no honorarium, grant, or other form of payment was given to anyone to produce the manuscript.
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Clyman, R.I., Hills, N.K. The effect of prolonged tracheal intubation on the association between patent ductus arteriosus and bronchopulmonary dysplasia (grades 2 and 3). J Perinatol 40, 1358–1365 (2020). https://doi.org/10.1038/s41372-020-0718-x
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DOI: https://doi.org/10.1038/s41372-020-0718-x
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