The association between pulmonary vascular disease and respiratory improvement in infants with type I severe bronchopulmonary dysplasia

Ryan J. Carpenter*, Nina Srdanovic, Karen Rychlik, Shawn K. Sen, Nicolas F.M. Porta, Aaron E. Hamvas, Karna Murthy, Amanda L. Hauck

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To describe the association between echocardiographic measures of pulmonary vascular disease and time to respiratory improvement among infants with Type I severe bronchopulmonary dysplasia (sBPD). Study design: We measured the pulmonary artery acceleration time indexed to the right ventricular ejection time (PAAT/RVET) and right ventricular free wall longitudinal strain (RVFWLS) at 34-41 weeks’ postmenstrual age. Cox-proportional hazards models were used to estimate the relationship between the PAAT/RVET, RVFWLS, and the outcome: days from 36 weeks’ postmenstrual age to room-air or discharge with oxygen (≤0.5 L/min). Result: For 102 infants, the mean PAAT/RVET and RVFWLS were 0.27 ± 0.06 and −22.63 ± 4.23%. An abnormal measurement was associated with an increased time to achieve the outcome (PAAT/RVET: 51v24, p < 0.0001; RVFWLS; 62v38, p = 0.0006). A normal PAAT/RVET was independently associated with a shorter time to outcome (aHR = 2.04, 1.11–3.76, p = 0.02). Conclusion: The PAAT/RVET may aid in anticipating timing of discharge in patients with type I severe BPD.

Original languageEnglish (US)
Pages (from-to)788-795
Number of pages8
JournalJournal of Perinatology
Volume42
Issue number6
DOIs
StatePublished - Jun 2022

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Obstetrics and Gynecology

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