<prompt> Deep vein thombosis occurs most commonly after:Total hip replacementGastrectomyProstatic operationBrain surgery  <response>: Ans. is a ie Total hip replacement Pts receiving tt in hospital are at increased risk of venous thrombosis. This includes pts being treated surgically or for medical conditions. The factors which result in increased risk of venous thrombosis include advancing age and greater complexity of surgical treatment. Orthopedic operations on the lower limbs hip and knee replacements are especially likely to result in venous thrombosis. 