The aim of this study was to determine the appropriateness of colonoscopy in relation to its diagnostic yield, with reference to the guidelines set by the American Society of Gastrointestinal Endoscopy (ASGE). A prospective 90-day audit was performed at Hospital Kualal Lumpur, which is a tertiary referral centre in Malaysia, to examine the appropriateness of colonoscopy by indication. During that time, 257 colonoscopies were performed in 244 patients. The predominant indications for colonoscopy were altered bowl habit (37%) and rectal bleeding (18%). Of the 257 colonoscopies, 216 (84%) were judged to be appropriate by ASGE guidelines. Only 43% of all colonoscopies had positive findings. Positive findings were found in 93% of cases judged appropriate compared with only 7% found in cases deemed inappropriate. There were statistically significant relationships between appropriateness and overall positive yield and between appropriateness and neoplastic findings (p < 0.05). Colonoscopy performed for appropriate indications yield more significant findings, this, we advocate the use of accepted guidelines to maintain or improve the standard colonoscopy services.
The is currently a heavy burden on endoscopy services worldwide and although guidelines for the appropriate use of esophagogastroduodenoscopy (EGD) have been well studied, there are few such studies with respect to colonoscopy and none for the Asia-Pacific region. This study aimed, firstly, to determine the 'appropriateness of colonoscopy' for procedures performed in the endoscopy unit of a large Asian hospital using the American Society of Gastrointestinal Endoscopy (ASGE) 2000 guidelines, and secondly, to determine predictive factors including 'appropriateness of colonoscopy' for positive findings and colorectal cancer (CRC).