Aerosol-generating procedure; percutaneous versus surgical tracheostomy.

PURPOSE: This study aims to compare percutaneous tracheostomy (PCT) and surgical tracheostomy's aerosol and droplet scattering by using a particle counter. MATERIALS AND METHODS: This study was carried out with 35 patients between October 2020 and June 2021. All personal protective equipment was provided to protect healthcare workers. Measurements were made in the 5 s period before the tracheal incision and the 5 s period after the tracheal incision. RESULTS: The mean age of the 15 female and 20 male patients in this study was 68.88 ± 13.48 years old (range: 33-95 years old). Patients were intubated for an average of 22 days. Particle amounts were found to be significantly higher at 5 µm (p = 0.003) and 10 µm (p = 0.012) during PCT. In surgical tracheostomy, there was no significant increase in the number of particles. When the particle measurement values of both methods were compared with each other, there was a significantly more particle scattering in PCT than in surgical tracheotomy at 0.3 µm (p = 0.034), 5 µm (p = 0.001), and 10 µm (p = 0.003). CONCLUSION: According to the data in our study, a surgical tracheotomy was not identified as an aerosol-generating procedure. Considering the risk of airborne transmission may increase due to viral mutations, we have shown that surgical tracheostomy may be more appropriate in patients who need a tracheostomy. Of course, the use of personal protective equipment during these processes is very important.

Particle scattering during otolaryngological examinations.

PURPOSE: We aimed to analyze particle scattering during common otolaryngology examination procedures which are associated with aerosol-generating procedures. MATERIALS AND METHODS: This study was conducted with 109 volunteer patients who have participated between October 2020 and January 2021. We measured aerosol and droplet production during oropharyngeal examination, anterior rhinoscopy, rigid nasopharyngoscopy, and rigid laryngoscopy. Measurements were calculated at the beginning of the examinations and during the otolaryngological examination procedures. RESULTS: There was no significant increase when we compared the particle scattering in each examination procedure with the basal measurements. But at the end of all examination methods for each patient, there was a significant increase at each micrometer. When all examination methods are compared with each other, particle increases in the oropharyngeal examination with larger particle sizes than 0,5 µm were found to be higher than other examination methods. We analyzed six patients' measurements, who coughed, gagged, or sneezed during the nasal endoscopy procedure, there was a significant increase in terms of 0,3 µm particle scattering. CONCLUSION: When all examination methods are performed together, there is a significant particle increase in all particle sizes in the examination room at the end of the examinations. This causes otolaryngologists to be exposed to a significant particle increase at each micrometer. Because of this reason, otolaryngologists should be careful and should wear personal protective equipment while examining patients.