Alcohol rubs reduce germs on stethoscopes.
Cultures taken from stethoscopes also grew Enterococcus species and Enterobacter aerogenes.
Skin flora, including diphtheroids, [alpha]-hemolytic streptococci, and coagulase-negative staphylococci, were the most common microorganisms found on 84 randomly tested stethoscopes from house staff, medical students, and attending physicians at Grady Memorial and Emory Crawford Long Hospitals, Atlanta.
The median number of colony-forming units isolated from stethoscopes was 35, with a range of 0-247. The stethoscopes were tested by investigators from Emory University, Atlanta.
"We don't mean to claim stethoscopes are the scourge of civilization, or that they are anywhere near as important in transmitting disease as hand carriage," James P. Steinberg, M.D., an associate chief of medicine and hospital epidemiologist, said in an interview. "But they can be colonized."
In a related survey of stethoscope users, 10 said they cleaned their stethoscopes between patients. Another 35 cleaned them daily, 30 did so weekly, 7 cleaned them monthly, and 2 never cleaned them.
When 24 of the stethoscopes were wiped with an alcohol pad as part of the study, the median number of colony-forming units plummeted to 0, with a range of 0-59.
However, because there is no "smoking gun" linking contaminated stethoscopes with disease, Dr. Steinberg said it seems excessive to recommend that all health professionals clean their stethoscopes with alcohol wipes before and after every patient contact.
Use of alcohol hand rubs, on the other hand, is already routinely recommended before and after patient contacts, so Dr. Steinberg and associates set out to determine whether a quick rub of the stethoscope might suffice.
Indeed it did.
Among 60 stethoscopes with a median of 33.5 colony-forming units at baseline (range, 1-247), the median colony-forming units dropped to 4 (range, 0-60) after the stetoscopes were swiped with an alcohol hand rub.
|Printer friendly Cite/link Email Feedback|
|Title Annotation:||Infectious Diseases|
|Publication:||Internal Medicine News|
|Date:||Jun 15, 2005|
|Previous Article:||Physicians slip up on isolation gown policy where multiresistant organisms lurk.|
|Next Article:||Substantial declines in food-borne illness found: rates of some major infections dropped, but incidence rose for Vibrio and Salmonella.|