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Device to revolutionize preventive blood clot care after joint replacement surgery
Date:4/6/2010

A mobile compression device is as effective as medication at preventing the formation of blood clots after hip replacement surgery but provides greater patient safety, according to a study in the March issue of the Journal of Bone & Joint Surgery.

"This device is as useful as blood thinners for the reduction of blood clots after hip replacement and it's superior in safety," said Douglas E. Padgett, M.D., chief of Adult Reconstruction and Joint Replacement at Hospital for Special Surgery, one of the investigators and final author. "This has the potential to change the paradigm as to how we prevent blood clots after hip replacement. The efficacy is the same, the safety is markedly better and the cost is comparable. This essentially raises the specter of 'can we use mechanical agents in lieu of the pharmacologic agents to prevent blood clots.'"

Roughly 30 percent to 50 percent of patients undergoing joint replacement surgery, either hip or knee replacement, will develop thromboembolic disease unless they receive preventive care. In people with this condition, blood clots form in veins; if a clot breaks away, it can travel to the lungs causing pulmonary embolism and death. For preventive care, doctors have the choice of using blood thinners or a compression device that wraps around the leg and pumps the leg to maintain normal blood flow.

"The College of Chest Physicians believes the best way to prevent blood clots is to use pharmacologic agents to thin the blood and make it difficult to clot," Dr. Padgett said. "Orthopedic surgeons on the other hand have to balance the desire to reduce the risk of blood clots with the reality that many of these chemical modalities that thin the blood are in fact associated with bleeding and hemorrhagic complications."

Until now, the compression devices available were large, could only be used in hospitals and prevented walking. Recently, a company has manufactured a small, battery-oper
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Contact: Phyllis Fisher
fisherp@hss.edu
212-606-1197
Hospital for Special Surgery
Source:Eurekalert

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