Nasopharyngeal and Oropharyngeal Decontamination to Prevent Nosocomial Infection in Cardiac Surgery Patients
Preventing nosocomial infections is important to improve postoperative outcomes for cardiac surgery patients. The patient’s own flora is thought to be the primary source of potentially pathogenic bacteria. Therefore, decontamination is an appealing preventative strategy for reducing nosocomial infections. This study investigated the use of topical chlorhexidine gluconate for perioperative nasal and oropharyngeal decontamination in cardiac surgery patients. The intervention resulted in a significant reduction in lower respiratory tract infections, deep surgical site infections, use of nonprophylactic antibiotics, and duration of hospitalization. There was an absolute risk reduction in total nosocomial infection of 6.4%; 16 patients would have to be treated with the chlorhexidine decontamination strategy to prevent one nosocomial infection. Chlorhexidine is an advantageous antimicrobial because it has broad-spectrum coverage, is inexpensive, and is very well tolerated.