Digestive Diseases and Sciences

, Volume 64, Issue 10, pp 2798–2805 | Cite as

Open Access Colonoscopy for Colorectal Cancer Prevention: An Evaluation of Appropriateness and Quality

  • Nikhil KapilaEmail author
  • Harjinder Singh
  • Kiranmayee Kandragunta
  • Fernando J. Castro
Original Article



Open access colonoscopy (OAC) has gained widespread acceptance and has the potential to increase colorectal cancer (CRC) screening. However, there is little data evaluating its appropriateness for CRC prevention.


The aim of this study is to evaluate the appropriateness of OAC in CRC screening and polyp surveillance by comparing to procedures ordered by gastroenterologists (NOAC). As secondary outcomes, we compared the quality of bowel preparation and adenoma detection rate (ADR) between OAC and NOAC.


It is retrospective single-center study. Inclusion criteria included patients > 50 years of age undergoing a colonoscopy for CRC screening and surveillance. Appropriateness was defined as those colonoscopies performed within 12 months of the recommended 2012 consensus guidelines. Secondary outcomes included the quality of bowel preparation and ADR.


5211 colonoscopies met inclusion criteria, and 64.9% were OAC. Screening OAC was appropriately 91.6% and NOAC 92.9% of the time (p = 0.179). Surveillance NOAC were inappropriate in 26.4% of cases, and surveillance OAC was 32.6% (p = 0.008). Multivariate analysis demonstrated that OAC did not influence ADR (OR for NOAC 0.97; 95% CI 0.86–1.1; p = 0.644) or an adequate bowel preparation (OR for NOAC 1.11; 95% CI 0.91–1.36; p = 0.306).


OAC performed similarly to NOAC for screening indications, quality of bowel preparation, and ADR. However, more surveillance procedures were inappropriate in the OAC group although both groups had a high number of inappropriate indications. Although OAC can be efficiently performed for screening indications, measures to decrease inappropriate surveillance colonoscopies are needed.


Colonoscopy Colorectal neoplasms Colonoscopy standards Open access colonoscopy 



Dr. Molly Moor, Meaghan McMahon, Dr. Hong Liang.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of GastroenterologyCleveland Clinic FloridaWestonUSA

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