Sciacca V, Mingoli A, Di Marzo L, Farina C, Cavallaro A
Istituto di I Clinica Chirurgica, Università La Sapienza, Roma.
Ital J Surg Sci. 1988;18(4):393-5.
The influence of knee flexion on the hemodynamics of ten Below Knee (B.K.) femoro-popliteal by-passes (mean follow-up 45 mos. min. 2-max. 134) has been studied by means of Doppler Pressure Index (P.I.) and Pulse Volume Recorder (P.V.R.). In all patients operative indication was limb salvage and the graft material was autologous saphenous vein (ASV) in 5 cases, PTFE in 3 and Dacron in 2. Calf and ankle P.I. and P.V.R. wave amplitude modifications have been evaluated bilaterally just after the beginning of knee flexion (80 degrees) and at 10 and 15 minute intervals. The knee flexion influenced detrimentally (p less than 0.025) the P.I. (calf: -10.9% at the beginning, -17.8% at 10 min. and -20.5% at 15 min.; ankle: -7.4% at the beginning, -13.6% at 10 min. and -16.5% at 15 min.). P.I. was minimally affected by knee flexion in non-grafted limbs (-3%). No consistent P.V.R. modifications were observed.
通过多普勒压力指数（P.I.）和脉搏容积记录器（P.V.R.）研究了屈膝对10例膝下（B.K.）股腘动脉旁路移植术（平均随访45个月，最短2个月 - 最长134个月）血流动力学的影响。所有患者的手术指征均为挽救肢体，移植物材料中5例为自体大隐静脉（ASV），3例为聚四氟乙烯（PTFE），2例为涤纶。在屈膝开始（80度）后以及每隔10分钟和15分钟时，双侧评估小腿和脚踝的P.I.以及P.V.R.波幅变化。屈膝对P.I.有不利影响（p小于0.025）（小腿：开始时为 - 10.9%，10分钟时为 - 17.8%，15分钟时为 - 20.5%；脚踝：开始时为 - 7.4%，10分钟时为 - 13.6%，15分钟时为 - 16.5%）。在未进行移植的肢体中，P.I.受屈膝的影响最小（-3%）。未观察到P.V.R.有一致的变化。
