Clinical Endoscopy

  • 제57권3호
  • /
  • Pages.335-341
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  • 2024
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  • 2234-2400(pISSN)
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  • 2234-2443(eISSN)
대한소화기내시경학회 (The Korean Society of Gastrointestinal Endoscopy)
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Aerosol protection using modified N95 respirator during upper gastrointestinal endoscopy: a randomized controlled trial

  • Chawisa Nampoolsuksan (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Thawatchai Akaraviputh (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Asada Methasate (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Jirawat Swangsri (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Atthaphorn Trakarnsanga (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Chainarong Phalanusitthepha (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Thammawat Parakonthun (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Voraboot Taweerutchana (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Nicha Srisuworanan (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Tharathorn Suwatthanarak (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Thikhamporn Tawantanakorn (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Varut Lohsiriwat (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University) ;
  • Vitoon Chinswangwatanakul (Department of Surgery, Faculty of Medicine Siriraj Hospital, Mahidol University)
  • 투고 : 2022.12.27
  • 심사 : 2023.02.22
  • 발행 : 2024.05.30
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초록

Background/Aims: The coronavirus disease 2019 pandemic has affected the worldwide practice of upper gastrointestinal endoscopy. Here we designed a modified N95 respirator with a channel for endoscope insertion and evaluated its efficacy in upper gastrointestinal endoscopy. Methods: Thirty patients scheduled for upper gastrointestinal endoscopy were randomized into the modified N95 (n=15) or control (n=15) group. The mask was placed on the patient after anesthesia administration and particles were counted every minute before (baseline) and during the procedure by a TSI AeroTrak particle counter (9306-04; TSI Inc.) and categorized by size (0.3, 0.5, 1, 3, 5, and 10 ㎛). Differences in particle counts between time points were recorded. Results: During the procedure, the modified N95 group displayed significantly smaller overall particle sizes than the control group (median [interquartile range], 231 [54-385] vs. 579 [213-1,379]×103/m3; p=0.056). However, the intervention group had a significant decrease in 0.3-㎛ particles (68 [-25 to 185] vs. 242 [72-588] ×103/m3; p=0.045). No adverse events occurred in either group. The device did not cause any inconvenience to the endoscopists or patients. Conclusions: This modified N95 respirator reduced the number of particles, especially 0.3-㎛ particles, generated during upper gastrointestinal endoscopy.

키워드

과제정보

We thank Mr. Asadavudh Buachum and Miss Kanyanat Changpan from the Occupational Health Division for their cooperation with the particle measurements and Dr. Saowalak Hunnangkul for her assistance with the statistical analysis.

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