Gluteal Squeeze for Left Colon Distension

Gluteal Squeeze for Left Colon Distension During Withdrawal in Colonoscopy

Status

Terminated

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT04827485

Enrollment

Registered

2021-04-01

Start date

2022-01-13

Completion date

2022-04-11

Last updated

2023-08-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Colorectal Neoplasms

Brief summary

Good distension of the colon during colonoscopy is essential to detect polyps. Gas sometimes escapes the colon through the anus resulting in compromised distension. Pressure on gluteal muscles when the colonoscope tip is in the left colon might help preventing this and thus increase visibility. No previous study looked at this.

Interventions

OTHERGluteal squeeze

During procedure, the doctor performing colonoscopy will ask for gluteal pressure. The technician will perform the maneuver, but the doctor will be blinded as the arms of the technician along with the patients behind are covered by a towel.

OTHERNo squeeze

During procedure, the doctor performing colonoscopy will ask for gluteal pressure. The technician will not perform the maneuver, but the doctor will be blinded as the arms of the technician along with the patients behind are covered by a towel.

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

SCREENING

Masking

QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

40 Years to No maximum

Healthy volunteers

Yes

Inclusion criteria

1. Age greater than or equal to 40 years 2. Scheduled colonoscopy

Exclusion criteria

1. Inflammatory bowel disease 2. History of colorectal cancer or colon resection 3. Any colorectal cancer syndromes (FAP, HNPCC, SPS) 4. Patient with poor bowel preparation identified during insertion

Design outcomes

Primary

Measure	Time frame	Description
Left colon distension score	during the procedure	Provider reported distension score in the left colon

Secondary

Measure	Time frame	Description
Left colon withdrawal time	during the procedure	Time taken to withdraw the scope in the left colon
Left colon examination time	during the procedure	Time taken to inspect during left colon withdrawal
Left colon adenoma detection rate	during the procedure	proportion of patients with at least one left colon adenoma
Left colon sessile serrated lesion detection rate	during the procedure	proportion of patients with at least one left colon sessile serrated lesion

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026