肝臓学および胃腸疾患ジャーナル
オープンアクセス

概要

Predictors of outpatient colonoscopy duration

Alexander O'Mahony

 

In contrast to Oesophagogastroduodenoscopy (OGD) colonoscopy can be a slow arduous procedure. Many variables influence the duration of colonoscopy. Well recognised risk factors for a prolonged duration include inpatient vs. outpatient, medication which decreases motility, increased BMI and Diabetes. Outpatient colonoscopy clinics already overburdened pre-COVID-19 are now faced with an unsurmountable task.

Aim

 

Identify specific risk factors for prolonged colonoscopy in an outpatient endoscopy unit. Correlate results in order to optimise time management in endoscopy units.

Methods

 

Prospective survey cohort: 45 patients (15 male, 30 female)

Data retrieval:

Patient questionnaire (identify patient specific risk factors)

Quantitative analysis document (measure total procedure time (TPT), caecal intubation time (CIT), withdrawal time (WT), Number of polyps identified/resected)Bowel preparation measurement tool (Boston Bowel Preparation Scale (BBPS))Endoscopist questionnaire (identify number of procedures conducted)

Results

Endoscopist experience has an impact on TPT (P= 0.003, Eta2= 0.247). Less experienced endoscopists had an increased TPT.

The following were also identified as impacting TPT->Polyp detection (P= 0.001, Eta2= 0.233), # Polypectomies (P= <0.0001, Eta2= 0.436), # Biopsies (P= 0.026, Eta2= 0.166).

BP grade has an impact on CIT (P= 0.03, Eta2= 0.241) with an inverse relationship between duration and BP grade.