Stethoscope more contaminated than doctors' hands

Excerpt from Discovery News
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stethoscope-670Stethoscopes tend to be more contaminated than the palms of physicians’ hands, new research shows.

In a recent Swiss study, researchers discovered that more bacteria cover a stethoscope’s diaphragm (the part that’s held against a patient’s body) than all regions of a physician’s hands, except the fingertips.

The study also found a close correlation between the degree of the contamination of the diaphragm and that of the physician’s fingertips. There are no official guidelines that tell doctors how often they should clean their stethoscopes, the researchers said.

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At hospitals in the future, it’s likely we’ll no longer see things like stethoscopes and white lab coats, and we also might have supercomputers replacing doctors!
“The more you have bacteria on the fingertips, the more you find bacteria on the membrane of the stethoscope,” said study author Dr. Didier Pittet, director of infection control at the University of Geneva Hospitals.

In the study, 71 patients were examined by one of three physicians who used sterile gloves, and a sterile stethoscope. After the examination, the researchers checked the degree of bacterial contamination on two parts of the stethoscope — the tube and membrane ­­— and four regions of the physician’s hands — back, fingertips, the region near the base of the thumb and the region near the little finger.

Researchers found more contamination in the diaphragm than in all regions of the physician’s hand, except the fingertips. The tube of the stethoscope also showed more contamination than the back of the physician’s hand.

“What was relatively surprising is the degree of colonization, which is pretty high,” Pittet said.

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