The measurement of maximum venous outflow and its value in the diagnosis of lower extremity deep venous thrombosis / 中国普通外科杂志

ABSTRACT

Objective To determine the maximum venous outflow of the lower extremity deep veins in case of deep venous thrombosis (DVT). Method We use IMEX9000 multi-function vascular diagnosis instrument to examine 166 lower extremities of 100 controls the maximum venous outflow. The measurement was carried on in 46 diagnosed DVT cases for healthy and diseased limbs. Ascending venography was also performed. Three indicators were adopted including venous capacitance (VC) ,2 second venous outflow(VO) and maximum venous outflow ratio(MVOR, namely VO/VC).Result Normal MVOR is 1. 08?0. 18, irrespective of age and gender. MVOR drops significantly in diseased limb (0. 69? 0. 14),paralleling with the result of ascending venography. Conclusion MVOR has the explicit diagnosis value for lower extremity deep venous thrombosis. A MVOR