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Biotech / Medical : BMET: Biomet, Inc.

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From: Elmer Flugum12/14/2000 3:21:02 PM
   of 1
 
December 14, 2000

Hip Replacement Blood Clots Studied

By THE ASSOCIATED PRESS

nytimes.com

A few extra pounds increase the likelihood of
dangerous blood clots after hip replacement
surgery, a study found.

Researchers at the University of California at Davis
Medical Center looked at California Medicare
records of 25,388 patients who underwent hip
replacement from 1993 through 1996. They found
that 297 were re-admitted to the hospital within three
weeks because a bit of blood clot had broken off and blocked a vein.

Women were found to be more likely than men to develop the blockages, called
embolisms. And people with a body mass index of 25 -- the low edge of the
overweight range -- were more likely to develop them than people with normal
body mass.

Obese people, those who are extremely overweight, did not have a greater risk
than those who were moderately overweight.

The study was published in Thursday's New England Journal of Medicine.

The blood thinner warfarin helped prevent the complication. So did use of a
pneumatic compression device to reduce swelling in the legs, but only for people
with a body mass index less than 25.

Body mass is found by multiplying weight in pounds by 703, then dividing that by
height in inches squared. Someone who is 5-foot-1 and weighs 132 pounds has a
body mass index of 25.
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