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But experts cautioned that the results, which were expected to be presented at the American College of Chest Physicians' annual meeting in Philadelphia, are not yet ready for prime time.
Even the researchers noted the preliminary nature of the findings.
Study author Dr. Danai Khemasuwan called the discovery "thought-provoking," but added that randomized, controlled studies are needed before the results can be applied in the clinical arena.
Experts agreed with that analysis.
"This preliminary analysis is interesting, but far from confirmatory," said Dr. Carl "Chip" Lavie Jr., medical director of cardiac rehabilitation and prevention director of the stress testing laboratory at Ochsner Heart & Vascular Institute in New Orleans. "Statins could improve endothelial function, and this could reduce the chance of venous thrombosis. Conceivably, statins could have some benefits on clotting factors. It is known that statins can have platelet effects, but this should help arterial thrombosis and would not be expected to help venous thrombosis."
DVT is strongly linked to prolonged immobility, such as sitting in a plane for hours, but can strike anyone and, in fact, afflicts some 2 million Americans each year.
The authors of this paper reviewed medical records for 740 patients admitted to the hospital with a diagnosis of breast, lung, colon, prostate, stomach, esophagus, pancreas, ovarian, kidney or brain cancer between October 2004 and September 2007.
Eight percent of patients who had been taking statins developed a VTE, compared with 21% in the control group (consisting of those individuals who had never used statins or who had only used them for less than two months).
SOURCES: Carl "Chip" Lavie Jr., M.D., medical director, cardiac rehabilitation and prevention director, stress testing laboratory, Ochsner Heart & Vascular Institute, New Orleans; Danai Khemasuwan, M.D., Albert Einstein Medical Center, Philadelphia; Oct. 27, 2008, presentation, American College of Chest Physicians annual meeting, Philadelphia
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