Audit of flexible laryngoscopy use and decontamination using a chlorine dioxide wipe system during COVID-19: Assessing the risk of disease transmission.

AIM

To assess the efficiency of decontamination of flexible nasoendoscopes using a chlorine dioxide wipe system and assessing the risk of disease transmission during the COVID-19 pandemic.

METHOD

Prospective and retrospective review of 544 patient episodes of nasoendoscopy and a study of 41 patient procedures and 22 members of staff at an ENT Outpatient Department from September 2020 to March 2021.

RESULTS

Among 41 randomly selected episodes of nasoendoscopy in the clinic, there was 93%-100% compliance with decontamination guidelines suggested by ENT UK. Among 544 patients who had nasoendoscopies, 20 had RT-PCR tests within two weeks and all yielded a negative result; no clusters of consecutive endoscopies were noted. None among the 22 clinic staff had symptoms of COVID-19 infection during the study period.

CONCLUSION

Accepting the limitations of the study design, this audit found no evidence of nosocomial transmission of SARS-CoV-2 virus related to use or reprocessing of flexible nasoendoscopes among patients and staff following good compliance to ENT UK decontamination guidelines.