Eidner G, Pöhlmann G, Anders J, Grohmann G
Department of Internal Medicine, Friedrich-Schiller University Jena, Germany.
Vasa. 1999 May;28(2):112-6. doi: 10.1024/0301-1526.28.2.112.
Despite the continuing high incidence of deep vein thrombosis after total hip arthroplasty, currently available mechanical thromboprophylactic systems are not sufficiently utilised in Germany.
Duplex-sonographic measurements of the maximum venous flow velocity (V. femoralis) in 10 healthy individuals performed with a leg orientation synonymous to that during total hip arthroplasty were compared to figures obtained during an out-stretched leg position. Additionally, duplex-sonography was conducted on 9 patients intra-operatively during total hip replacement to complete the study. All investigations were executed both with and without application of the A-V Impulse System (AVIS), a mechanical thromboprophylactic procedure.
In contrast to the out-stretched leg position, a decreased venous peak flow velocity during surgery as well as in the operation-identical leg orientation was demonstrated in the absence of AVIS. However, by means of AVIS, a significant increase in the venous peak flow velocity (p < 0.01) was achieved for both situations. Additionally, an increased vessel diameter of the V. femoralis communis was observed in 75% of patients due to the leg orientation stipulated for hip replacement surgery.
The data suggest that the A-V Impulse System can effectively accelerate the venous reflux-flow during operations involving hip replacements and thus provide an early preventative therapy for deep vein thrombosis after a surgical procedure.
尽管全髋关节置换术后深静脉血栓形成的发生率持续居高不下，但德国目前可用的机械性血栓预防系统未得到充分利用。
对10名健康个体在与全髋关节置换术中腿部姿势相同的情况下进行股静脉最大血流速度的双功超声测量，并与伸直腿部姿势时获得的数据进行比较。此外，在9例患者全髋关节置换术中进行了术中双功超声检查以完成研究。所有检查均在使用和不使用A-V脉冲系统（AVIS）（一种机械性血栓预防程序）的情况下进行。
与伸直腿部姿势相比，在未使用AVIS的情况下，手术期间以及与手术相同的腿部姿势中静脉峰值血流速度降低。然而，通过AVIS，两种情况下静脉峰值血流速度均显著增加（p < 0.01）。此外，由于髋关节置换手术规定的腿部姿势，75%的患者股总静脉直径增加。
数据表明，A-V脉冲系统可有效加速髋关节置换手术期间的静脉回流，从而为手术后深静脉血栓形成提供早期预防性治疗。
