Objective: To assess the benefits of laparoscopic appendicectomy over open appendicectomy and to evaluate the impact of the severity of appendicitis and of peritonitis on the advantages of the laparoscopic approach.
Design: Prospective unrandomised study.
Setting: University hospital, Italy.
Subjects: 137 consecutive patients with acute appendicitis, 60 of whom were treated by open and 77 by laparoscopic appendicectomy. Patients were subdivided according to the severity of appendicitis and the presence of peritonitis.
Main outcome measures: Duration of operation, consumption of analgesics, duration of hospital stay, overall complications, wound infection.
Results: Hospital stay (median 2.5 days, range 1-18 compared with 4, range 2-22 p < 0.0001). and wound infection (3/77 (4%) compared with 13/60 (22%), p 0.02) were significantly lower after laparoscopic operation. The incidence of wound infection was significantly lower when subgroups were analysed separately.
Conclusions: Hospital stay and wound infection rates were significantly lower after laparoscopic appendicectomy. With the exception of the wound infection rate, the variables studied may differ depending on the severity of the appendicitis and the presence of peritonitis. Result of comparative studies should be carefully interpreted when the two groups are not stratified for these features.