Bulitta C, Kock H J, Hanke J, Sievers K W, Schmit-Neuerburg K P
Abteilung für Unfallchirurgie, Universität GHS Essen.
Unfallchirurgie. 1996 Aug;22(4):145-52.
A new pneumatic compression pump--the AV-impulse system--causes increased return of venous blood from the lower limbs to the heart and increases total blood flow in the lower limbs by emptying the plantar venous plexus. Up to date there exist no experiences with using this system in plaster cast. We studied the maximum venous blood flow, the venous blood flow per minute and the venous diameters above the popliteal and femoral vein by duplexsonography in 12 lower limbs of 6 healthy persons before and after applying below-the-knee plaster casts. After applying the plaster cast we observed a slight increase in venous diameter (p = 0.02). By using the AV-impulse-system we observed a significant increase in maximum venous blood flow and venous blood flow per minute (p < 0.05). We demonstrated a significant increase of venous blood return in the deep veins of the lower limbs after applying a lower limb plaster cast by using the AV-impulse-system. These results indicate the possible benefit of using the AV-impulse-system as a physical method of thromboprophylaxis in orthopaedic and trauma patients with plaster cast immobilisation of the leg.
一种新型气动压缩泵——AV 脉冲系统，可使下肢静脉血回心血量增加，并通过排空足底静脉丛增加下肢的总血流量。目前尚无在石膏固定中使用该系统的经验。我们通过双功能超声检查，对 6 名健康人的 12 条下肢在应用膝下石膏固定前后，测量了腘静脉和股静脉上方的最大静脉血流量、每分钟静脉血流量以及静脉直径。应用石膏固定后，我们观察到静脉直径略有增加（p = 0.02）。使用 AV 脉冲系统时，我们观察到最大静脉血流量和每分钟静脉血流量显著增加（p < 0.05）。我们证明，在应用下肢石膏固定后，使用 AV 脉冲系统可使下肢深静脉的静脉血回流显著增加。这些结果表明，在因腿部石膏固定而制动的骨科和创伤患者中，使用 AV 脉冲系统作为一种物理性血栓预防方法可能有益。
