*Department of Anesthesiology, Shiga University of Medical Science, Shiga, Japan.
J Am Podiatr Med Assoc. 2023 Jan-Feb;113(1). doi: 10.7547/21-059.
Tourniquet failure is attributed to inadequate tourniquet pressure, inadequate exsanguination, failure to compress medullary vessels within the bone, and incompressible calcified arteries. We herein report a case of massive bleeding using a properly functioning tourniquet in a patient who had bilateral calcified femoral arteries. When incompressible calcified arteries are present, the inflated tourniquet cuff fails to adequately compress the underlying artery, yet acts as an efficient venous tourniquet, which leads to an increase in bleeding. It is therefore critical to preoperatively confirm the effectiveness of the tourniquet in arterial occlusion in patients with severe arterial calcification.
止血带失效归因于止血带压力不足、未能充分排出血液、未能压迫骨髓内血管以及不可压缩的钙化动脉。我们在此报告一例双侧股动脉钙化患者使用功能正常的止血带时发生大出血的病例。当存在不可压缩的钙化动脉时，充气止血带袖带无法充分压迫下方动脉，但却充当了有效的静脉止血带，导致出血增加。因此，对于严重动脉钙化的患者，术前确认止血带在动脉闭塞中的有效性至关重要。
