1. Microdebrider is less aerosol-generating than CO2 laser and cold instruments in microlaryngoscopy
- Author
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Antti-Pekka Hyvärinen, Mari Lahelma, Veli-Jukka Anttila, Nina S. Atanasova, Teemu J. Kinnari, Lotta-Maria A. H. Oksanen, Noora Rantanen, Ahmed Geneid, Enni Sanmark, Faculty of Medicine, Korva-, nenä- ja kurkkutautien klinikka, HUS Head and Neck Center, HUS Inflammation Center, Aerovirology Research Group, Molecular and Integrative Biosciences Research Programme, and Faculty Common Matters (Faculty of Medicine)
- Subjects
Cold instruments ,medicine.medical_specialty ,Medical staff ,CO2 laser ,Laryngology ,Coronavirus disease 2019 (COVID-19) ,Microdebrider ,PAPILLOMAVIRUS ,Airborne transmission ,Humans ,Medicine ,3125 Otorhinolaryngology, ophthalmology ,Laryngeal surgery ,Aerosols ,Co2 laser ,SARS-CoV-2 ,business.industry ,COVID-19 ,Exhalation ,General Medicine ,respiratory system ,Carbon Dioxide ,Microlaryngeal surgery ,Aerosol ,Otorhinolaryngology ,Anesthesia ,Lasers, Gas ,business - Abstract
Objective COVID-19 spreads through aerosols produced in coughing, talking, exhalation, and also in some surgical procedures. Use of CO2 laser in laryngeal surgery has been observed to generate aerosols, however, other techniques, such cold dissection and microdebrider, have not been sufficiently investigated. We aimed to assess whether aerosol generation occurs during laryngeal operations and the effect of different instruments on aerosol production. Methods We measured particle concentration generated during surgeries with an Optical Particle Sizer. Cough data collected from volunteers and aerosol concentration of an empty operating room served as references. Aerosol concentrations when using different techniques and equipment were compared with references as well as with each other. Results Thirteen laryngological surgeries were evaluated. The highest total aerosol concentrations were observed when using CO2 laser and these were significantly higher than the concentrations when using microdebrider or cold dissection (p p p p p = 0.146, p = 0.753). In comparing all three techniques, microdebrider produced the least aerosol particles. Conclusions Microdebrider and cold dissection can be regarded as aerosol-generating relative to background reference concentrations, but they should not be considered as high-risk aerosol-generating procedures, as the concentrations are low and do not exceed those of coughing. A step-down algorithm from CO2 laser to cold instruments and microdebrider is recommended to lower the risk of airborne infections among medical staff.
- Published
- 2021