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Association between hemodynamic instability and noninvasive ventilation failure: A large multicenter observational

Hongbo Zhou1, Xiaoyi Liu2, Ke Wang3

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The American Journal of the Medical Sciences
|October 25, 2025
PubMed
Summary

Hemodynamic instability in patients receiving noninvasive ventilation (NIV) increases NIV failure risk. However, if instability is reversed within 24 hours, the increased risk of NIV failure is eliminated.

Keywords:
Acute respiratory failureHemodynamic instabilityNoninvasive ventilation

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Area of Science:

  • Critical Care Medicine
  • Respiratory Medicine
  • Cardiology

Background:

  • Hemodynamic instability is a relative contraindication for noninvasive ventilation (NIV).
  • Limited evidence supports this contraindication for NIV use.
  • Acute hypoxemic respiratory failure (AHRF) management often involves NIV.

Purpose of the Study:

  • To investigate the association between hemodynamic instability and NIV failure in AHRF patients.
  • To determine if the severity and reversibility of hemodynamic instability impact NIV outcomes.

Main Methods:

  • Prospective, multicenter observational study in 18 hospitals.
  • Enrolled AHRF patients receiving NIV.
  • Defined hemodynamic instability as requiring vasoactive agents to maintain MAP >70 mmHg within 24h of NIV.

Main Results:

  • 13% of 2137 patients developed hemodynamic instability.
  • Instability was linked to higher NIV failure rates (56% vs. 37%).
  • Reversible instability did not increase NIV failure risk; irreversible instability did.

Conclusions:

  • Hemodynamic instability is a significant risk factor for NIV failure in AHRF.
  • The severity of hemodynamic impairment correlates with increased NIV failure likelihood.
  • Reversing hemodynamic instability within 24 hours mitigates the associated risk of NIV failure.