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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT05321043
Other study ID # ZS-3367
Secondary ID
Status Recruiting
Phase N/A
First received
Last updated
Start date July 1, 2022
Est. completion date June 1, 2025

Study information

Verified date November 2023
Source Peking Union Medical College Hospital
Contact Shengyu Zhang, M.D.
Phone +8618501155701
Email pumchzsy@126.com
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Study objective: To clarify the risk of exposure to indirect contact and transmission of environmental objects during digestive endoscopy diagnosis and treatment for patients and medical staff, simulating by using Vitamin B2 solution. Study design: This is a case-only research.


Description:

In the study, the object surface of the digestive endoscopy room is preliminarily analyzed, and several key exposure units, such as potential high-frequency touch areas such as the surface of the bed unit, are screened and defined. A fluorescence photographing system is arranged in the digestive endoscopy room, and the exposure unit before treatment is photographed with the best excitation wavelength of the fluorescent marker as the light source, to get the experimental background reference. Then, patients undergoing digestive endoscopy in the same endoscopy work unit (usually half a day) are selected. Before entering the digestive center, the hands of patients are fluorescently marked with vitamin B2 mixed hand sanitizer 1ml (vitamin B2 0.12mg/ml). Meanwhile, the process of the gastroscopy is recorded by camera for the recognition of touch behaviors. Then, the doctors and nurses give routine care and procedure. Based on the fluorescence tracing and detection methods, the indoor light source is turned off after each selected endoscopy work unit, and the fluorescence residue on the surface of key exposed units is photographed. The environmental surfaces touched by the patient are sampled by the wiping method. Then the video of the gastroscopy process is analyzed for the recognition of touch behaviors. The dosage is detected by the Fluoro Max-4® fluorophotometer (HORIBA, Japan), which is quantified as a cumulative mass (μg) over all the exposure time.


Recruitment information / eligibility

Status Recruiting
Enrollment 100
Est. completion date June 1, 2025
Est. primary completion date September 1, 2024
Accepts healthy volunteers No
Gender All
Age group N/A and older
Eligibility Inclusion Criteria: - During the study period, patients who were treated in the digestive endoscopy center of Beijing Union Medical College Hospital and planned to undergo gastroscopy. Age and gender are not limited temporarily. Exclusion Criteria: - Allergic to medical non-toxic fluorescent agent: Vitamin B2 aqueous solution. - Poor general condition, including severe cardiopulmonary disease, difficult to tolerate examination, and coagulation disorders. - Patients with contraindications to endoscopy.

Study Design


Related Conditions & MeSH terms


Intervention

Other:
Vitamin B2 labeling
Using medical non-toxic fluorescent agents, VB2 solution, to mark the patient's hands before endoscopy examination.

Locations

Country Name City State
China Peking Union Medical College Hospital Beijing

Sponsors (2)

Lead Sponsor Collaborator
Peking Union Medical College Hospital Tsinghua University

Country where clinical trial is conducted

China, 

Outcome

Type Measure Description Time frame Safety issue
Primary Dosage of Indirect Contact Exposure of Environmental surfaces A liquid of Vitamin B2 and hand sanitizer (0.12mg/mL) is marked on the hands of every patient who is scheduled in the same endoscopy work unit (usually half a day) outside the endoscopy center. Then, the doctors and nurses conduct standard EGD procedure. After this endoscopy work unit is finished, the environmental surfaces touched by the patient are sampled by the wiping method. The dosage is detected by the Fluoro Max-4® fluorophotometer (HORIBA, Japan), which is quantified as a cumulative mass (µg) over all the exposure time. one year
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