Intraoperative desaturation in pediatric patients at high altitude: incidence, risk factors, and a non-linear body weight safety threshold - Takeaways - MDSpire
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Intraoperative Hypoxemia in Children at High Altitude: Prevalence, Contributing Factors, and a Non-linear Safety Threshold Related to Body Weight

  • By

  • Dawa Puzhen

  • Yiwen Yang

  • Xiaoyan Li

  • Laba Ciren

  • Yi Feng

  • Qi Yan

  • June 23, 2026

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  • 1

    The study analyzed 1,793 pediatric patients undergoing surgery at 3,650 m altitude, focusing on intraoperative hypoxemia risk factors.

  • 2

    The overall incidence of intraoperative desaturation was found to be 3.5%, with specific risk factors identified through multivariable analysis.

  • 3

    Independent risk factors for desaturation included younger age, severe underweight, lower preoperative hemoglobin, female sex, and prolonged ventilation.

  • 4

    A non-linear relationship was established between body weight and desaturation risk, with a safety threshold identified at 26.95 kg.

  • 5

    Desaturation was associated with higher rates of delayed extubation, increased ICU admissions, and prolonged hospital stays.

Original Source(s)

Intraoperative desaturation in pediatric patients at high altitude: incidence, risk factors, and a non-linear body weight safety threshold

  • by Dawa Puzhen, Yiwen Yang, Xiaoyan Li, Laba Ciren, Yi Feng, Qi Yan

  • June 23, 2026

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