Pinzur M S, Gold J, Schwartz D, Gross N
STAMP (Special Team for Amputations, Mobility, Prosthetics/Orthotics) Team, Hines Veterans Administration Hospital, Ill.
Orthopedics. 1992 Sep;15(9):1033-6; discussion 1036-7. doi: 10.3928/0147-7447-19920901-07.
Cardiac function and oxygen consumption were measured in 25 patients who underwent amputation for peripheral vascular disease (PVD), and in five similarly aged control patients with PVD. Five patients at each of the midfoot, Syme's, below-, through-, and above-knee amputation levels and the five controls were measured at rest, normal walking speed, and maximum walking speed on a treadmill. At normal walking speed, all of the patients functioned at approximately 80% of their cardiac capacity. Normal walking speed and cadence decreased and oxygen consumption per meter walked increased with more proximal amputation. The ratio of cardiac function and oxygen consumption at normal walking speed as compared with at rest increased with more proximal amputation, and the capacity to increase walking speed and oxygen consumption lessened. Our results suggest that peripheral vascular insufficiency amputees function at a level approaching their maximum functional capacity. At more proximal amputation levels, the capacity to walk short or long distances is greatly impaired.
对25例因外周血管疾病（PVD）接受截肢手术的患者以及5例年龄相仿的PVD对照患者进行了心脏功能和耗氧量测量。在跑步机上，分别对中足、赛姆氏、膝下、膝上和大腿中部截肢水平的5例患者以及5例对照者在静息、正常步行速度和最大步行速度状态下进行了测量。在正常步行速度下，所有患者的心脏功能发挥水平约为其心脏能力的80%。随着截肢部位越靠近近端，正常步行速度和步频降低，每米步行的耗氧量增加。与静息状态相比，正常步行速度下心脏功能与耗氧量的比值随着截肢部位越靠近近端而增加，且增加步行速度和耗氧量的能力减弱。我们的结果表明，外周血管功能不全的截肢患者的功能水平接近其最大功能能力。在截肢部位更靠近近端时，短距离或长距离行走的能力会受到极大损害。
