The impact of diagnostic delay on the course of acute appendicitis

Background-The diagnosis of acute appendicitis is often delayed, which may complicate the further course of the disease. Aims-To review appendectomy cases in order to determine the incidence of diagnostic delay, the underlying factors, and impact on the course of the disease. Methods-Records of all children who underwent appendectomy from 1994 to 1997 were reviewed. The 129 cases were divided into group A (diagnostic period within 48 hours) and group B (diagnostic period 48 hours or more). Results-In the group with diagnostic delay, significantly more children had first been referred to a paediatrician rather than to a surgeon. In almost half of the cases in this group initial diagnosis was not appendicitis but gastroenteritis. The perforation rate in group A was 24%, and in group B, 71%. Children under 5 years of age all presented in the delayed group B and had a perforation rate of 82%. The delayed group showed a higher number of postoperative complications and a longer hospitalisation period. Conclusions-Appendicitis is hard to diagnose when, because of a progressing disease process, the classical clinical picture is absent. The major factor in diagnostic delay is suspected gastroenteritis. Early surgical consultation in a child with deteriorating gastroenteritis is advised. Ultrasonographs can be of major help if abdominal signs and symptoms are non-specific for appendicitis.