Ishtiaq Aziz.
Frequency of postoperative deep vein thrombosis in high-risk surgical patients.
J Coll Physicians Surg Pak Jan ;15(5):299-301.

Objective: To find the frequency of postoperative deep vein thrombosis (DVT) in high-risk surgical patients. Design: Cohort study. Place and Duration of Study: The surgical department of the Combined Military Hospital, Rawalpindi from October 1997 to January 2000. Subjects and Methods: Patients of both genders were chosen from all the major branches of surgery provided they belonged to the high-risk categories. They were all over the age of 40 years and were to undergo a major surgical procedure. The selected patients were subjected to the radionuclide venography both pre- and postoperatively. This was performed using Technetium (Tc)-99 labeled RBCs blood pool venography technique. Results: Out of 117 patients studied, postoperative deep vein thrombosis was observed in 15 patients. So the frequency of postoperative deep vein thrombosis after high-risk surgery was 12.82%. Conclusion: In this study the 12.82% frequency of deep vein thrombosis was lower than that in the Western literature. There is a need to provide prophylactic anticoagulant therapy to those older patients who are to undergo major orthopaedic surgery, have advanced malignancy or have more than one risk factors.

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