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MORBIDITY AND MORTALITY DUE TO C. DIFFICILE INFECTION IN FRACTURE NECK OF FEMUR PATIENTS



Abstract

Introduction: In 1990 an estimated 1.3 million hip fractures occurred worldwide, a figure which is expected to double by 2025 and increase to 4.5 million by 2050.

Clostridium difficile associated diarrhoea (CDAD) has emerged as a healthcare associated infection of great clinical and economic significance especially in the frail and vulnerable group of fracture neck of femur patients. A major risk factor for the development of CDAD in patients who undergo operation for fracture neck of femur is the perioperative antibiotic exposure, with cephalosporins being particularly implicated. The type ‘027’ strains of C. Difficile are multi-resistant and cause severe morbidity and mortality. A retrospective audit was performed to study the effect of C. Difficile infection in operated fracture neck of femur patients.

Material and Methods: All the patients who were diagnosed with C. Difficile after an operated fracture neck of femur at the District general hospital during the three year study period from April 2004 till March 2007 were included in the present study. All patients received the routine peri-operative antibiotic prophylaxis of three doses of intravenous cefuroxime. Data collected included age, sex, duration between operation and the onset of diarrhoea, length of stay and associated mortality.

Results: A total of 1023 patients underwent surgery for fracture neck of femur during the three years of study period. The average age of the patients was 81 years. 80% of the patients were females. A total of 62 patients suffered from C. Difficile diarrhoea (6%) after the arthroplasty procedure, and within this cohort, 29 patients died during the same admission to the hospital (47%). The average length of stay for a patient with fracture neck of femur was increased from 23.4 days to 60 days in those affected with C. Difficile diarrhoea.

Discussion: The patients with fracture neck of femur are generally elderly, frail and with poor body reserves. C.difficile infection in such patients not only adds to the morbidity, but also causes significant increase in the mortality rate. The broad spectrum peri-operative antibiotics used to prevent infection generally render the patient vulnerable to this highly lethal hospital bug. Introduction of simple infection control measures such as hand-washing and isolation, and change of peri-operative antibiotic protocol led to a statistically significant reduction in the incidence of C. Difficile infections after surgery for fracture neck of femur.

Correspondence should be addressed to: EFORT Central Office, Technoparkstrasse 1, CH – 8005 Zürich, Switzerland. Email: office@efort.org