Adherence of Swedish primary health care practitioners to diagnostic guidelines for IBS

Irritable bowel syndrome (IBS) is a common condition that should be diagnosed using the Rome criteria and limited laboratory testing. The aim of this retrospective, medical record-based study was to evaluate the adherence of Swedish primary health care practitioners to diagnostic guidelines for IBS.

Using the electronic patient register in primary care, we identified 1943 new IBS cases in patients aged 18-65 between January 2015 and December 2019 in Region Örebro County. A random sample of 400 patients was selected and their medical records were scrutinized to evaluate diagnostic methods.

Of the 309 eligible medical records, only 36.2% of patients met the Rome III or IV criteria. The criteria were explicitly documented in 4.9% of cases, and subclassification was noted in 5.5%. There were no significant differences in diagnostic practices between GPs and other physicians. Only 9.4% were diagnosed without laboratory testing, although 69.9% did not undergo all recommended tests according to local guidelines. Rectoscopy was performed in 14.2%, while 9.7% and 5.8% of patients were referred for colonoscopy or CT, respectively, with significantly higher referral rates in patients over 40 years. Men were more frequently referred for colonoscopy while other diagnostic procedures showed no significant sex differences.

Adherence to IBS diagnostic guidelines in Swedish primary care seems to be limited among both GPs and non-GPs. The documented use of Rome criteria is minimal, and guideline-compliant laboratory testing is insufficient. Increased awareness and structured implementation of IBS diagnostic criteria are warranted.