Udoff E J, Barth K H, Harrington D P, Kaufman S L, White R I
Radiology. 1979 Aug;132(2):289-93. doi: 10.1148/132.2.289.
Peak systolic pressure gradients were obtained before and after vasodilatation in 42 patients (50 limbs) with arteriographic iliac artery stenosis of questionable significance. Patients were divided into three groups according to per cent narrowing of the iliac artery. Pressure gradients across the site of stenosis tended to be significant in patients with greater than 75% stenosis (greater than or equal to 20 mm Hg) but not in patients with less than 50% stenosis; patients in the middle group (50-75% stenosis) demonstrated a wide variance. Thus the arteriogram is not an accurate indicator of hemodynamically significant lesions, particularly in patients with 50-75% stenosis where pressure measurements are of greatest value. Variations in the aortic and femoral artery systolic peak pressure occurred following vasodilatation, indicating the importance of simultaneous pressure recording.
对42例（50条肢体）经动脉造影显示髂动脉狭窄程度可疑的患者，在血管扩张前后测量了收缩压峰值梯度。根据髂动脉狭窄百分比将患者分为三组。狭窄程度大于75%的患者（收缩压峰值梯度大于或等于20 mmHg）狭窄部位的压力梯度往往具有统计学意义，而狭窄程度小于50%的患者则不然；中间组（狭窄程度为50%-75%）的患者压力梯度差异较大。因此，动脉造影并非血流动力学显著病变的准确指标，尤其是在狭窄程度为50%-75%的患者中，压力测量的价值最大。血管扩张后主动脉和股动脉收缩压峰值出现变化，表明同步记录压力的重要性。
