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Aerosol Generation During Bronchoscopy. | LitMetric

Aerosol Generation During Bronchoscopy.

J Bronchology Interv Pulmonol

Department of Chemical Engineering, University of Utah, Salt Lake City, UT.

Published: January 2023

AI Article Synopsis

  • The study focuses on understanding aerosol generation during bronchoscopy procedures, which can expose healthcare providers to viral pathogens.
  • It measures the inhalable aerosol concentration during different types of bronchoscopy (flexible and rigid) under moderate sedation and general anesthesia (GA).
  • Results indicate that aerosol levels significantly increased during specific moments, particularly during lidocaine atomization, intubation/extrication, and recovery in rigid bronchoscopy, highlighting potential risks for healthcare workers.

Article Abstract

Background: Bronchoscopy is an aerosol-generating procedure and can place the health care providers at risk for exposure to viral pathogens. The pattern of aerosol generation during  different aspects of bronchoscopy are poorly understood. The goal of this study is to characterize the pattern of aerosol generation during flexible and rigid bronchoscopy performed under moderate sedation or general anesthesia (GA). The inhalable mass concentration of aerosol generated during the procedures was measured continuously.

Methods: The aerosol concentration in the endoscopy room at baseline and while the procedures were performed was measured. Procedures included flexible bronchoscopies with moderate sedation, flexible bronchoscopies performed through endotracheal tube under GA and rigid bronchoscopies under GA. Changes from the baseline were measured continuously during the bronchoscopy.

Results: Measurements obtained during the procedure were compared with the baseline reading. For flexible bronchoscopy under moderate sedation, the inhalable aerosol fraction was significantly higher (P=0.036) during atomization of lidocaine. For Flexible bronchoscopy through endotracheal tube, inhalable aerosol fraction was significantly higher (P<0.001) during intubation and extubation. For rigid bronchoscopy done under GA with jet ventilation, inhalable aerosol fraction was significantly higher during both the bronchoscopy (P=0.01) and recovery (P=0.012).

Conclusion: Elevated levels of aerosol were generated during all aspects of bronchoscopy. However, atomization of lidocaine, intubation, extubation, and recovery generated the most aerosol.

Download full-text PDF

Source
http://dx.doi.org/10.1097/LBR.0000000000000811DOI Listing

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