Microbiology Laboratory, Department of Medicine and Nutrition, University of Guanajuato, León, Mexico; Research Department, Bajio Regional High Specialty Hospital, Secretariat of Health, León, Mexico. Electronic address: [Email]
The presence of gram-negative bacteria in the oral cavity is an undesirable occurrence in patients undergoing chemotherapy. Our aim was to investigate the antibacterial effect of 0.12% chlorhexidine mouthwash in chemotherapypatients with a randomized, double-blind, placebo-controlled trial. There were no significant differences between oral colonization rates; there may be local factors that interfere with chlorhexidine activity.