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Related Experiment Videos

Oxygen desaturation during fibreoptic bronchoscopy.

N Maranetra1, R Pushpakom, S Bovornkitti

  • 1Department of Medicine, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.

Journal of the Medical Association of Thailand = Chotmaihet Thangphaet
|May 1, 1990
PubMed
Summary

Bronchoscopy often causes oxygen desaturation (SaO2 deterioration), but pulse oximetry is reliable for monitoring. Performing procedures in the supine position with low-flow oxygen may mitigate this common side effect.

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Area of Science:

  • Pulmonology
  • Critical Care Medicine

Background:

  • Bronchoscopic examinations are common diagnostic procedures.
  • Monitoring oxygen saturation (SaO2) during bronchoscopy is crucial for patient safety.

Purpose of the Study:

  • To investigate factors influencing SaO2 deterioration during diagnostic bronchoscopy.
  • To assess the reliability of pulse oximetry for SaO2 monitoring.

Main Methods:

  • Studied 100 consecutive patients undergoing diagnostic bronchoscopy.
  • Compared pulse oximetry with blood gas analysis for SaO2 measurement.
  • Analyzed patient position, bronchial washing, fluid volume, biopsy, and procedure duration as potential factors.

Main Results:

  • Pulse oximetry demonstrated comparable accuracy to blood gas analysis for SaO2.

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  • Approximately 97% of patients experienced SaO2 desaturation, with a median recuperation time of 6 minutes.
  • Examination in the sitting position and bronchial washing were associated with greater SaO2 drops, particularly in non-hypoxemic patients.

    • Conclusions:

    • Bronchoscopy frequently leads to SaO2 desaturation, necessitating careful monitoring.
    • Performing bronchoscopies in the supine position and providing supplemental low-flow oxygen are recommended to minimize desaturation.