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Doctors’ Garments And Bacterial Contamination

This colorized 2005 scanning electron micrograph depicts numerous clumps of methicillin-resistant Staphylococcus aureus bacteria, magnified 2,390 times. Content provided by CDC/Jeff Hageman, MHS, via the CDC's Public Health Image Library (PHIL)Bacterial contamination of physicians’ newly laundered uniforms occurs within three hours of putting them on, making them no more or less dirty than the traditional white coats, researchers reported.

Researchers sought to compare bacterial and methicillin-resistant Staphylococcus aureus contamination of physicians’ white coats to freshly laundered short-sleeved uniforms, and to determine the rate at which bacterial contamination happens. They reported results in the Journal of Hospital Medicine.

ACP Internist‘s blog recently took up the debate as well. The issue has cropped up over the years, assessing not only the cleanliness but the professionalism inherent in the white lab coat.

Researchers conducted a prospective, randomized, controlled trial among 100 residents and hospitalists on an internal medicine service at Denver Health, a university-affiliated public safety-net hospital. Subjects wore a white coat or a laundered, short-sleeved uniform.

At the end of an eight-hour workday, no significant differences were found between the extent of bacterial or MRSA contamination of infrequently-washed white coats compared to the laundered uniforms. Sleeve cuffs of white coats were slightly but significantly more contaminated than the pockets or the midsleeves, “but interestingly, we found no difference in colony count from cultures taken from the skin at the wrists of the subjects wearing either garment,” researchers wrote.

And, there was no association found between the extent of bacterial or MRSA contamination and the frequency with which white coats were washed or changed. Colony counts of newly laundered uniforms were essentially zero, but after three hours they were nearly 50 percent of those counted at eight hours.

*This blog post was originally published at ACP Internist*

Does Cell Phone Use Stimulate Brain Activity?

We all know that using a cell phone can stimulate the brain to work a bit harder. “Mr. Skerrett? This is Dr. LeWine’s office. Do you have a minute to talk about your test results?” or “Dad, a bunch of kids are going to Casey’s house after the dance. Can I go?” But a new study published in JAMA is making me wonder what the energy emitted by the phone itself — not just the information it delivers — is doing to my brain.

Here’s the study in a nutshell. Dr. Nora Volkow and her colleagues recruited 47 volunteers to have their brain activity measured twice by a PET scanner. Both times the volunteer had a cell phone strapped to each ear. During one measurement, both phones were turned off. During the other, one phone was turned on but muted so the volunteer didn’t know it was on; the other was left off. Each session lasted about an hour. The scans showed a small increase in the brain’s use of glucose (blood sugar) when the phone was on, but only in parts of the brain close to the antenna.

It was an elegant study. The researchers took pains to anticipate sources of error. They used a control (both phones off) against which to compare the effect of a “live” cell phone. They used cell phones on each ear, one on and one off, to see if the effect was localized. They muted the phone that was on to eliminate the possibility that any brain activation was due to listening to the sound of a voice coming through the phone’s speaker. So the result is probably a real one, not an artifact or measurement error.

What does this brain activation mean? No one really knows. As Dr. Volkow told NPR, “I cannot say if it is bad that they [cell phones] are increasing glucose metabolism, or if it could be good.” Read more »

*This blog post was originally published at Harvard Health Blog*

On Health And Discrimination In Hiring

From a [recent] article in the New York Times on hiring discrimination against people who smoke:

“There is nothing unique about smoking,” said Lewis Maltby, president of the Workrights Institute, who has lobbied vigorously against the practice. “The number of things that we all do privately that have negative impact on our health is endless. If it’s not smoking, it’s beer. If it’s not beer, it’s cheeseburgers. And what about your sex life?”

I think he’s right, more or less, in a slippery-slope sort of way, seriously.

*This blog post was originally published at Medical Lessons*

Nutrition Labels For Alcoholic Beverages?

Virtually all bottled beverages you can buy have handy-dandy nutrition labels from which you can access information about calories, carbs, and so forth. All beverages except the ones containing alcohol, that is. Why is that?

Maybe it’s because alcoholic beverages contain little to no protein, sodium, cholesterol, Vitamin A, Vitamin C, calcium and iron (remember that alcohol is metabolized as a fat, not a carbohydrate) — so why bother? Then again, alcohol does contain calories — a lot of them. Would people drink less if they knew how many calories they were consuming? Would they drink less if they knew how many “servings” of alcohol were contained in the bottle they just purchased?

Maybe it’s because of the cost of performing nutritional analyses on each vintage of wine, each and every year, would turn profitable vineyards into money losers? Then again, plenty of niche beverage producers who run reasonably narrow margin businesses have never complained about the requirement to provide nutritional information.

The Tax and Trade Bureau is the federal agency that decides what information must appear on the labels of alcoholic beverages. Currently, it does not require manufacturers of wine, beer and the hard stuff to list ingredients. It does require them to list chemicals that folks might have an adverse reaction to things like sulfites, aspartame, and dyes.

The Tax and Trade Bureau also mandates that wines containing 14 percent or more alcohol by volume must state this fact on a label. Wines containing less than 14 percent can either specify the alcohol content or affix the words “light wine” or “table wine” to their labels. In addition, “light” beer bottlers must state calorie and carbohydrate content, and distilled liquor bottlers must specify the alcohol content by volume. Read more »

*This blog post was originally published at Pizaazz*

Adult Vaccines: Most Doctors Don’t Stock All Of Them

Less than one in three primary care practices offer all 10 recommended adult vaccines, citing a variety of financial and logistical reasons.

Researchers sponsored by the Centers for Disease Control and Prevention sampled 993 family physicians and 997 general internists. Of the respondents, 27 percent (31 percent of family practitioners and 20 percent of internists) stocked all 10. Results appear in the Feb. 17 issue of the journal Vaccine.

The 10 vaccines were hepatitis A; hepatitis B; human papillomavirus vaccine (HPV); combined measles, mumps, and rubella (MMR); meningococcal conjugate vaccine (MCV4); pneumococcal polysaccharide (PPSV23); tetanus diphtheria (Td); combined tetanus, diphtheria, and pertussis (Tdap); varicella; and zoster.

Of the responding practices, two percent plan to stop vaccine purchases, 12 percent plan to increase them and the rest had no plans to change their vaccination stocking habits. But physicians who identified themselves as their respective practices’ decision makers for stocking vaccines were more likely to decrease the number of different vaccines stocked for adults (11 percent vs. three percent; P=.0001).

The National Vaccine Advisory Committee, a group that advises the various federal agencies involved in vaccines and immunizations, arrived at even bleaker figures in 2009, reported the April 2009 issue of ACP Internist. For example, 62 percent of decision makers in practices said they had delayed purchase of a vaccine at some time in the prior three years due to financial concerns. And in the prior year, 16 percent of practice decision makers had seriously considered stopping vaccinations for privately-insured patients due to the cost and reimbursement issues. Read more »

*This blog post was originally published at ACP Internist*

Latest Interviews

IDEA Labs: Medical Students Take The Lead In Healthcare Innovation

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How To Be A Successful Patient: Young Doctors Offer Some Advice

I am proud to be a part of the American Resident Project an initiative that promotes the writing of medical students residents and new physicians as they explore ideas for transforming American health care delivery. I recently had the opportunity to interview three of the writing fellows about how to…

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Latest Book Reviews

Book Review: Is Empathy Learned By Faking It Till It’s Real?

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The Spirit Of The Place: Samuel Shem’s New Book May Depress You

When I was in medical school I read Samuel Shem s House Of God as a right of passage. At the time I found it to be a cynical yet eerily accurate portrayal of the underbelly of academic medicine. I gained comfort from its gallows humor and it made me…

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Eat To Save Your Life: Another Half-True Diet Book

I am hesitant to review diet books because they are so often a tangled mess of fact and fiction. Teasing out their truth from falsehood is about as exhausting as delousing a long-haired elementary school student. However after being approached by the authors’ PR agency with the promise of a…

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