Endocuff Vision Reduces Inspection Time Without Decreasing Lesion Detection: A Clinical Randomized Trial

Douglas K. Rex, James E. Slaven, Jonathan Garcia, Rachel Lahr, Meghan Searight, Seth A. Gross

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Background & Aims: Mucosal exposure devices improve detection of lesions during colonoscopy and have reduced examination times in uncontrolled studies. We performed a randomized trial of Endocuff Vision vs standard colonoscopy to compare differences in withdrawal time (the primary end point). We proposed that Endocuff Vision would allow complete mucosal inspection in a shorter time without impairing lesion detection. Methods: Adults older than 40 years undergoing screening or surveillance colonoscopies were randomly assigned to the Endocuff group (n=101, 43.6% women) or the standard colonoscopy group (n=99; 57.6% women). One of 2 experienced endoscopists performed the colonoscopies, aiming for a thorough evaluation of the proximal sides of all haustral folds, flexures, and valves in the shortest time possible. Inspection time was measured with a stopwatch and calculated by subtracting washing, suctioning, polypectomy and biopsy times from total withdrawal time. Results: There were significantly fewer women in the Endocuff arm (P = .0475) but there were no other demographic differences between groups. Mean insertion time with Endocuff was 4.0 min vs 4.4 min for standard colonoscopy (P = .14). Mean inspection time with Endocuff was 6.5 min vs 8.4 min for standard colonoscopy (P < .0001). Numbers of adenomas detected per colonoscopy (1.43 vs 1.07; P = .07), adenoma detection rate (61.4% vs 52%; P = .21), number of sessile serrated polyps per colonoscopy (0.27 vs 0.21; P = .12), and sessile serrated polyp detection rate (19.8% vs 11.1%; P = .09) were all higher with Endocuff Vision. Results did not differ significantly when we controlled for age, sex, or race. Conclusion: In a randomized trial, we found inclusion of Endocuff in screening or surveillance colonoscopies to decrease examination time without reducing lesion detection. ClinicalTrials.gov, Number: NCT03361917.

Original languageEnglish (US)
Pages (from-to)158-162.e1
JournalClinical Gastroenterology and Hepatology
Issue number1
StatePublished - Jan 2020


  • Adenoma Detection Rate
  • Colon Cancer
  • Colonoscopy
  • Colorectal
  • Colorectal Polyps
  • Endocuff Vision
  • Withdrawal Time

ASJC Scopus subject areas

  • Hepatology
  • Gastroenterology

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