Samples were drawn within 24 hours of venous duplex ultrasound (VDU) screening for DVT. [Results]Five of 105 patients had DVT identified by VDU scan.

• 病人在24小时内血管彩色多普勒超声检查。[结果]血管彩色多普勒超声检查有5例患者有深静脉血栓形成。