MedTrace Logo

Oral Ondansetron to Improve Patient Experience of Unsedated Esophagogastroduodenoscopy Pilot Study

NCT07264738 · Status: ACTIVE_NOT_RECRUITING · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 40

Last updated 2026-05-01

No results posted yet for this study

Summary

The goal of this interventional pilot study is to explore the feasibility of administering ondansetron prior to esophagogastroduodenoscopy (EGD), and preliminarily test if it can alleviate the gagging reflex, nausea and vomiting in Chinese patients undergoing unsedated diagnostic EGD. The main questions it aims to answer are:

Is adding oral ondansetron to pre-medication regimen of unsedated EGD safe, easy to conduct, and well-accepted by patients? May taking ondansetron prior to EGD reduce the discomfort of patients during the endoscopic process? May taking ondansetron prior to EGD reduce the intensity of patient gagging and nausea, and the incidence of vomiting ? Researchers will compare premedication of oral ondasetron and topical pharyngeal anesthesia (dyclonine hydrochloride mucilage) with topical pharyngeal anesthesia only to answer the questions above.

Participants will be treated with one of the following regimens according to the randomization result:

* Oral ondansetron of 8 mg 2 hours prior to endoscopic process and dyclonine hydrochloride mucilage to be gurgled 15 minutes prior to endoscopic process;
* dyclonine hydrochloride mucilage to be gurgled 15 minutes prior to endoscopic process.

After the endoscopic process is finished, patients will be asked to fill in a questionnaire that contains the following items, all measured by NRS 0-10:

* Overall discomfort;
* Intensity of gagging;
* Willingness to undergo unsedated EGD again if indicated.

Conditions

  • Esophagogastroduodensocopy (EGD) Procedure

Interventions

DRUG

ondansetron and dyclonine hydrochloride

Patients will take 8 mg oral ondansetron 2 hours prior to EGD process in addition to dyclonine hydrochloride mucilage to be gurgled 15 minutes prior to EGD process.

DRUG

dyclonine hydrochloride only

Patients will be instructed to gurgle 10 mL of dyclonine chloride mucilage (0.01 g/mL) and gurgle for 1 minute 15 minutes prior to endoscopic process.

Sponsors & Collaborators

  • Peking Union Medical College Hospital

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-07-01
Primary Completion
2025-09-28
Completion
2026-06-10

Countries

  • China

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07264738 on ClinicalTrials.gov