Shaw J A, Murray D G
J Bone Joint Surg Am. 1982 Oct;64(8):1148-52.
Soft-tissue pressures in specimens of the lower extremities of cadavera, obtained following hip disarticulation, were measured directly beneath a pneumatic thigh tourniquet to establish the relationship between the tourniquet pressure and underlying soft-tissue pressure. It was found that the tissue pressure was consistently lower than the tourniquet pressure and that the percentage of tourniquet pressure reflected in the underlying tissue varied inversely with the circumference of the thigh. It was also found that the pressure decreased with increasing depth of the soft tissue.
the use of a pneumatic tourniquet is potentially associated with injury to underlying muscles, vessels, and nerves if excessive pressure occurs beneath the tourniquet. In order to minimize the risk of soft-tissue injury, the lowest tourniquet pressure that maintains a bloodless field should be used. A nomogram based on data generated in this experiment is provided as a guide to determining appropriate tourniquet pressures.
在髋关节离断后获取的尸体下肢标本中，在气动大腿止血带下直接测量软组织压力，以确定止血带压力与下方软组织压力之间的关系。结果发现，组织压力始终低于止血带压力，且下方组织中反映的止血带压力百分比与大腿周长成反比。还发现，压力随着软组织深度的增加而降低。
如果止血带下出现过大压力，使用气动止血带可能会对下方的肌肉、血管和神经造成损伤。为了将软组织损伤的风险降至最低，应使用维持无血视野的最低止血带压力。根据本实验生成的数据提供了一个列线图，作为确定合适止血带压力的指南。
