Colonoscopy is an Aerosol Generating Procedure

To See if Colonoscopy is an Aerosol-generating Procedure and to Identify Ways to Minimise the Aerosol Generated Clinical Trial

Official title:

Colonoscopy is an Aerosol-generating Procedure and Water-immersion Technique May Decrease the Amount of Aerosol Generated

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT04479592
• Other study ID #: 2020.200.2
• Status: Recruiting
• Start date: June 1, 2020
• Est. completion date: January 31, 2021

Study information

• Verified date: July 2020
• Source: Chinese University of Hong Kong
• Contact: Shannon M Chan, FRCSEd
• Phone: 35052627
• Email: shannonchan[@]surgery.cuhk.edu.hk
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

With a commercially available particle counter, we can differentiate the particle counts of different sizes in different areas of the endoscopy room. An increase from baseline particles of < 5um during or after the procedure would suggest that the procedure is an AGP.

In this study, the particle counter from Met One Instruments model GT-526S will be used. A particle sizer is placed within 10cm of the anus, at the level of the endoscopists' face and at the level of the endoscopy nurse assistant's face The change in the particles of different sizes would be simultaneously recorded. The results of these three locations are compared to baseline and compared with each other

Description:

Currently, the term droplet is often taken to refer to droplets >5 microns (μm) in diameter that fall rapidly to the ground under gravity, and therefore are transmitted only over a limited distance (e.g. ≤1 m). In contrast, the term droplet nuclei refers to droplets ≤5 μm in diameter that can remain suspended in air for significant periods of time, allowing them to be transmitted over distances >1 metre. With a commercially available particle counter, we can differentiate the particle counts of different sizes in different areas of the endoscopy room. An increase from baseline particles of < 5um during or after the procedure would suggest that the procedure is an AGP.

In this study, the particle counter from Met One Instruments model GT-526S will be used. The study will be conducted in the Prince of Wales Hospital endoscopy centre. A particle sizer is placed within 10cm of the anus, at the level of the endoscopists' face and at the level of the endoscopy nurse assistant's face The change in the particles of different sizes would be simultaneously recorded. The results of these three locations are compared to baseline and compared with each other.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 120
• Est. completion date: January 31, 2021
• Est. primary completion date: December 30, 2020
• Accepts healthy volunteers: No
• Gender: All
• Age group: N/A and older

Eligibility

Inclusion Criteria:

• All patients who are planned for colonoscopy in the Prince of Wales Hospital, Hong kong

Exclusion Criteria:

• Patients where a flexible sigmoidoscopy was plannned Patients where the procedure was done in a negative pressure room Patients where the procedure was done in an endoscopy room other than the designated rooms Patients where the procedure was done under general anaesthesia

Related Conditions & MeSH terms

• To See if Colonoscopy is an Aerosol-generating Procedure and to Identify Ways to Minimise the Aerosol Generated

Intervention

Other:
• Particle counter
Particle counter to measure the aerosol generated

Locations

Country	Name	City	State
Hong Kong	Prince of Wales Hospital	Hong Kong

Sponsors (1)

Lead Sponsor	Collaborator
Chinese University of Hong Kong

Country where clinical trial is conducted

Hong Kong, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Concentration of aerosol generated during the procedure	Concentration of aerosol generated during the procedure	During the procedure