title: Ethanol-based cleanser versus isopropyl alcohol to decontaminate stethoscopes.
abstract: Approximately 1 in 20 hospital admissions is complicated by a health care-associated infection. Stethoscopes may play a role in spreading nosocomial infections. The objective of this study was to determine the effectiveness of an ethanol-based cleanser (EBC) compared with isopropyl alcohol pads in reducing bacterial contamination of stethoscope diaphragms. Stethoscopes were cultured from medical professionals on 4 medical floors before and after cleaning with either EBC or isopropyl alcohol pads. The numbers of colony-forming units (cfu) grown were compared between the 2 cleaners and to baseline values. A total of 99 stethoscopes were cultured (49 EBC; 50 isopropyl alcohol), and all were positive for growth. After cleaning, 28.28% of the stethoscopes were growth-free (12 EBC; 16 isopropyl alcohol). Cleaning with EBC and isopropyl alcohol pads significantly reduced the cfu counts (by 92.8% and 92.5%, respectively), but neither was found to be statistically superior (F = 1.22; P = .2721). Cleaning a stethoscope diaphragm using either EBC or isopropyl alcohol led to a significant reduction in bacterial growth in culture. As an extension of the hand, a stethoscope should be cleaned with the same frequency as the hands. The simultaneous cleaning of hands and stethoscope may further increase compliance with current standards.
authors.affiliation: Department of Medicine, Akron General Medical Center, Akron, Ohio 44307, USA. plecat@agmc.org
authors.forename: Paul
authors.initials: P
authors.lastname: Lecat
authors.forename: Elliott
authors.initials: E
authors.lastname: Cropp
authors.forename: Gary
authors.initials: G
authors.lastname: McCord
authors.forename: Nairmeen Awad
authors.initials: NA
authors.lastname: Haller
mesh_terms: D019840:2-Propanol / Q000494:pharmacology*; D001419:Bacteria / Q000187:drug effects* / Q000302:isolation & purification*; D015169:Colony Count, Microbial; D004202:Disinfectants / Q000494:pharmacology*; D000431:Ethanol / Q000494:pharmacology*; D006801:Humans; D019023:Stethoscopes / Q000382:microbiology*
chemical_list: D004202:Disinfectants; D000431:Ethanol; D019840:2-Propanol