Colonic distention in CT colonography: supine/prone versus bilateral decubitus scanning

Not Applicable

• Conditions: Healthy individual

• Registration Number: JPRN-UMIN000026162
• Lead Sponsor: Sakakibara Sapia Tower Clinic

Brief Summary

OBJECTIVE: To prospectively evaluate and complete the colonic distention and patient acceptance of CT colonography (CTC) in the supine/prone and left/right lateral positions. METHODS: A total of 220 consecutive patients were alternately allocated to the supine/prone positioning or left/right lateral positioning group. Two readers scored the degree of colonic distention by segment using a 4-point Likert scale (4 = optimal, 3 = adequate, 2 = inadequate, 1 = collapsed). In addition, patients were asked to rate the discomfort due to positioning during each scan using a 3-point animated face scale (3 = difficult, 2 = somewhat unacceptable, 1 = easy). RESULTS: The overall mean colonic distention scores for supine, prone, left lateral, and right lateral positions were 3.16, 3.29, 3.22, and 3.42, respectively. Of all, the right lateral position provided the best colonic distention (p < 0.01). Combined left lateral and right lateral positions provided more adequately distended segments compared with combined supine and prone positions (95.6% vs 90.7 %, respectively, p < 0.01). Patient acceptance was significantly lower in the prone position compared to other positions; however there was no difference in patient acceptance between the supine and left/right lateral positions. CONCLUSION: Right lateral positioning provided the best colonic distention and good patient acceptance. ADVANCES IN KNOWLEDGE: The left/right lateral position should be considered for routine CTC positioning protocols.

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Completion: 2011-09-30
• Study Start: 2017-02-16
• Last Update Posted: 17 October 2023

Recruitment & Eligibility

• Status: Complete: follow-up complete
• Sex: All
• Target Recruitment: 220

Inclusion Criteria

Not provided

Exclusion Criteria

1) Gastric or intestinal stenosis, abdominal adhesions, bowel obstruction or perforation, toxic megacolon. 2) Evidence of an increased risk in carrying out bowel preparation or CTC exams. 3) Possibility of pregnancy. 4) Patients with psychological conditions that contraindicate CT colonography or make them irrelevant to participate in the trial. 5) Claustrophobia. 6) Iodine hypersensitivity. 7) Severe thyroid disease. 8) Severe deafness. 9) Subjects whose eligibility for this clinical trial is not appropriate by other reasons.

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Assessment of colon distension per segment using a 4-point scale.

Secondary Outcome Measures

Name	Time	Method
Data on perceived burden of CT colonography were collected using visual analogue scale (VAS) and a questionnaire.