title: Hypoprothrombinemia and hemorrhage in a surgical patient treated with cefotetan.
abstract: For 4 days before surgical repair of a diverticulitic colovesical fistula and for 6 days after, a 63-year-old man was treated with 2 g of intravenous cefotetan disodium every 12 hours for associated urosepsis with bacteremia. Postoperatively, the patient followed a diet of intravenous nutrition only. Uneventful convalescence was interrupted by signs of sudden major blood loss, accompanied by prolonged prothrombin time. After stabilization with packed red blood cells, fresh plasma, crystalloids, and parenteral vitamin K, laparotomy revealed a huge intra-abdominal clot, which was evacuated. This case illustrates the risk of unexpected hypoprothrombinemia and hemorrhage in a cefotetan-treated surgical patient who demonstrated none of the usual comorbid conditions generally described in patients with antibiotic-induced hypoprothrombinemia. Like cefamandole nafate, cefoperazone sodium, moxalactam disodium, and other cephalosporins containing the methylthiotetrazole side chain, cefotetan appears to pose an unusual risk of major bleeding.
authors.affiliation: Surgical Service, Veterans Affairs Medical Center, Manchester, NH 03104.
authors.forename: C W
authors.initials: CW
authors.lastname: Kaiser
authors.forename: J D
authors.initials: JD
authors.lastname: McAuliffe
authors.forename: R J
authors.initials: RJ
authors.lastname: Barth
authors.forename: J A
authors.initials: JA
authors.lastname: Lynch
mesh_terms: D015313:Cefotetan / Q000009:adverse effects*; D003108:Colonic Diseases / Q000601:surgery; D006470:Hemorrhage / Q000139:chemically induced*; D006801:Humans; D007020:Hypoprothrombinemias / Q000139:chemically induced*; D007412:Intestinal Fistula / Q000601:surgery; D008297:Male; D008875:Middle Aged; D010289:Parenteral Nutrition, Total; D011182:Postoperative Care; D012307:Risk Factors; D001747:Urinary Bladder Fistula / Q000601:surgery
chemical_list: D015313:Cefotetan