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Duration of noninvasive respiratory support in preterm infants: Association with gestational age and risk factors for delayed weaning

Abstract

Objective

To analyze the association between gestational age (GA) and postmenstrual age (PMA) at successful noninvasive respiratory support (NRS) —which includes noninvasive ventilation with neurally adjusted ventilatory assist (NIV-NAVA), nasal continuous positive airway pressure (nCPAP), and high-flow nasal cannula (HFNC)— weaning and to identify the risk factors affecting PMA at successful NRS weaning.

Study design

This retrospective cohort study included 449 preterm infants born before 32 weeks’ GA who were admitted to the neonatal intensive care unit between 2015 and 2023.

Results

The median PMA at successful weaning was 36.0 weeks. PMA at successful weaning was negatively correlated with GA. Only a small number of infants with earlier GA achieved successful weaning before 36 weeks of PMA. Earlier GA, small for GA, bubbly/cystic appearance on X-rays, and bowel perforation with ileostomy were identified as risk factors for delayed weaning.

Conclusion

Clinical interventions should consider these risks to optimize weaning outcomes.

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Fig. 1: Negative correlation between gestational age and postmenstrual age at successful noninvasive respiratory support.
Fig. 2: Successful noninvasive respiratory support weaning rate at postmenstrual ages.

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Data availability

The datasets analyzed during the current study are available from the corresponding author on reasonable request.

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Author information

Authors and Affiliations

Authors

Contributions

SE and AN conceived and designed the study. SE performed material preparation, data collection, and the literature review. SE also analyzed and interpreted the results and drafted the manuscript. TT and AN supported the statistical analyses. AN supervised the study, including data analysis and interpretation. All authors reviewed the results and approved the final version of the manuscript.

Corresponding author

Correspondence to Shu Eguchi.

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Competing interests

The authors declare no competing interests.

Ethics approval and consent to participate

This study was approved by the Institutional Review Board of the Japanese Red Cross Medical Center (approval code: 1675) and conducted in accordance with the principles of the Declaration of Helsinki.

Consent for publication

Because this was a retrospective observational study, the requirement for written informed consent was waived, and the study proceeded using an opt-out approach.

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Eguchi, S., Takeda, T. & Nakao, A. Duration of noninvasive respiratory support in preterm infants: Association with gestational age and risk factors for delayed weaning. J Perinatol 46, 50–54 (2026). https://doi.org/10.1038/s41372-025-02492-x

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