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Research: Operative repair in congenital diaphragmatic hernia: How long do we really need to wait?

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Research: Operative repair in congenital diaphragmatic hernia: How long do we really need to wait?

J Pediatr Surg

. 2022 Jan 31;S0022-3468(22)00091-4. doi: 10.1016/j.jpedsurg.2022.01.020. Online ahead of print. https://pubmed.ncbi.nlm.nih.gov/35216800/

Operative repair in congenital diaphragmatic hernia: How long do we really need to wait?

Kyley J Cox 1Michelle J Yang 2Stephen J Fenton 3Katie W Russell 3Christian C Yost 4Bradley A Yoder 5Affiliations expand

Abstract

Objective: To analyze preoperative cardiopulmonary support and define preoperative stability relative to timing of surgical repair for CDH neonates not on ECMO.

Study design: We retrospectively analyzed repeated measures of oxygenation index (OI; Paw*FiO2×100/PaO2) among 158 neonates for temporal preoperative trends. We defined physiologic stability using OI and characterized ventilator days and discharge age relative to delay in repair beyond physiologic stability.

Results: The OI in the first 24 h of life was temporally reliable and representative of the preoperative mean (ICC 0.70, 95% CI 0.61-0.77). A pre-operative OI of ≤ 9.4 (AUC 0.95) was predictive of survival. Surgical delay after an OI ≤ 9.4 resulted in increased ventilator days (1.4, 95% CI 1.1-1.9) and discharge age (1.5, 95% CI 1.2-2.0). When prospectively applied to a subsequent cohort, an OI ≤ 9.4 was again reflective of physiologic stability prior to repair.

Conclusion: OI values are temporally reliable and change minimally after 24 h age. Delay in surgical repair of CDH beyond initial stability increases ventilator days and discharge age without a survival benefit.

Level of evidence: Prognosis study, Level III.

Keywords: Congenital diaphragmatic hernia; Neonate; Operation; Oxygenation index.

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