Computed tomography-based clinical diagnostic pathway for acute appendicitis: prospective validation.

Clinical guidelines for diagnosing appendicitis have evolved with imaging technology. Prior research has shown that computed tomography (CT) improves diagnostic accuracy in suspected appendicitis. However, this gap motivated an investigation into whether CT use alone could reduce negative appendectomy rates. It was already known that negative appendectomy rates remained high despite CT use in some institutions. No prior work had resolved how to optimize CT use alongside clinical evaluation. Surgeon involvement in decision-making had not been systematically studied in this context. The role of early surgical assessment in reducing unnecessary operations remained unclear. Discharge protocols after negative CT scans had not been standardized. This study aimed to address these uncertainties through a structured diagnostic pathway.

The aim was to evaluate a new diagnostic pathway for adult patients with suspected appendicitis. The specific problem was the persistent high rate of negative appendectomies despite CT use. Motivation came from the need to improve surgical decision-making accuracy. The study sought to determine if a structured approach could lower diagnostic errors. It also aimed to assess whether CT use could be optimized without increasing perforation rates. The pathway focused on integrating clinical evaluation with imaging decisions. Surgeon involvement before CT scans was a key component. The goal was to develop a reproducible method for reducing diagnostic inaccuracy.

A prospective diagnostic pathway was implemented at a single institution. The study compared data from two time periods: pre-pathway (2001–2002) and post-pathway (2004–2005). All patients over 14 years old with possible appendicitis were included. Surgeons evaluated patients before CT scans were ordered. Female patients automatically received CT scans. Male patients with low suspicion or prolonged pain underwent CT. Patients with negative CT results were discharged or observed. Outcomes measured included negative appendectomy rates, perforation rates, and CT frequency. Data were analyzed using statistical comparisons between the two groups.

The pathway significantly reduced negative appendectomy rates from 16% to 4%. Perforation rates remained stable at 8% and 11%. CT use frequency did not change significantly. Surgeon evaluation before imaging was a key factor in the pathway. Discharge after negative CT was safe and effective. The pathway reduced unnecessary surgeries without increasing complications. Clinical suspicion and duration of symptoms guided CT decisions. The structured approach improved diagnostic accuracy in appendicitis evaluation.

The authors propose that a structured diagnostic pathway reduces negative appendectomies. They suggest that CT use alone is insufficient for diagnostic accuracy. Early surgical evaluation is a critical component of the pathway. The pathway's rules for CT use improved patient outcomes. Discharge after negative CT was safe and effective. The study supports integrating clinical judgment with imaging. The pathway did not increase perforation rates. The findings suggest that a systematic approach improves diagnostic reliability.