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Related Experiment Videos

A hazard of pressure support ventilation.

J W Black1, B S Grover

  • 1Department of Medicine, Madigan Army Medical Center, Tacoma, WA 98431-5000.

Chest
|February 1, 1988
PubMed
Summary

Newer mechanical ventilators with pressure support (PS) can inadvertently deliver continuous positive airway pressure (CPAP). Clinicians must understand ventilator-specific settings to prevent adverse events and ensure patient safety.

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Area of Science:

  • Critical Care Medicine
  • Respiratory Therapy
  • Biomedical Engineering

Background:

  • Pressure support (PS) ventilation is a common feature in modern mechanical ventilators.
  • The breath termination mechanisms differ significantly across various ventilator models.

Observation:

  • Two cases illustrate the potential for inadvertent, continuous high pressure support or continuous positive airway pressure (CPAP).
  • Standard monitoring may not detect this issue, leading to adverse consequences.

Findings:

  • The variability in PS breath termination mechanisms poses a risk of unintended CPAP delivery.
  • High levels of CPAP can lead to predictable, adverse patient outcomes.

Implications:

  • Physicians must be knowledgeable about their specific ventilator's PS termination features.
  • Appropriate monitoring, including mean airway pressure, is crucial for early detection and management.
  • Awareness of this complication is vital for clinicians using PS ventilation.

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