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A study of 406 consecutive children operated upon for appendicitis from July 1982 to July 1987 was compared with a previously published study of 657 children with the same diagnosis operated upon between 1972 and 1982. This was done to determine if the methods of therapy continue to yield low complication rates and zero mortality rates. The routine use of antibiotic coverage for both aerobic and anaerobic bacteria in perforated appendicitis resulted in low complication rates, 3.2 per cent for major and 2.5 per cent for minor complications. Major complications included small intestinal obstruction and intra-abdominal abscess. Minor complications included wound infection and prolonged ileus. These rates are similar to those of the first investigation. The mortality rate continued to be zero. Complete peritoneal lavage was used in patients with generalized peritonitis or extensive localized peritonitis. Operative lysis of adhesions for small intestinal obstruction was required in four of these patients. This did not occur in patients with perforated appendicitis with abscess formation or more localized peritonitis who had no lavage. The technique rather than the disease process may be responsible for the complication.

Six hundred and fifty-one patients with appendicitis were reviewed and an over-all perforation rate of 36.5 per cent accompanied by a major complication rate of only 3.38 per cent and an over-all complication rate of 9.06 per cent was reported. This low complication rate despite a high level of perforation can be attributed to the use of antibiotic regimens effective against both aerobic and anaerobic organisms. A thorough irrigation and flushing of debris and exudate from the abdominal cavity of patients with ruptured appendicitis may improve these rates.