Sacks D, Robinson M L, Summers T A, Marinelli D L
Department of Radiology, Reading Hospital and Medical Center, PA 19603.
AJR Am J Roentgenol. 1994 Jan;162(1):179-83. doi: 10.2214/ajr.162.1.8273660.
The purpose of this study was to determine if abnormal findings on duplex sonographic examination after peripheral artery angioplasty correlate with the subsequent recurrence of a stenosis.
We used duplex sonography to examine 35 stenoses in 23 patients within 48 hr after the patients had angioplasty to treat these stenoses. Patients were followed up for 3 years by using one or more of the following: assessment of signs and symptoms, monitoring of peripheral pulses, pulse volume recordings, and angiography. Life tables were constructed to compare long-term patency with the presence of abnormal findings seen on duplex sonograms. Abnormal findings at the dilated segment included a blood-flow velocity greater than 120 cm/sec or a residual elevated velocity ratio greater than 1.4 or 2.0 immediately after angioplasty.
Twelve (34%) of 35 angioplasty sites showed recurrent stenosis before 36 months. Patency at 24 months was calculated for velocities less than 120 cm/sec vs velocities of 120 cm/sec or greater (41% vs 68%), for velocity ratios less than 1.4 vs ratios of 1.4 or greater (63% vs 57%), and for velocity ratios less than 2.0 vs ratios of 2.0 or greater (54% vs 74%). We found no significant difference in patency between those patients with normal findings and those with abnormal findings on duplex sonographic examination after angioplasty.
Abnormal findings on duplex sonograms obtained immediately after peripheral angioplasty cannot be used to predict subacute restenosis.
本研究旨在确定外周动脉血管成形术后双功超声检查的异常结果是否与随后的狭窄复发相关。
我们对23例患者的35处狭窄病变在血管成形术后48小时内进行了双功超声检查。通过以下一种或多种方法对患者进行了3年的随访：症状和体征评估、外周脉搏监测、脉搏容积记录和血管造影。构建生命表以比较双功超声检查发现的异常结果与长期通畅情况。扩张段的异常结果包括血管成形术后立即出现的血流速度大于120 cm/秒或残余升高速度比大于1.4或2.0。
35个血管成形术部位中有12个（34%）在36个月前出现了再狭窄。计算了24个月时血流速度小于120 cm/秒与血流速度为120 cm/秒或更高时的通畅率（分别为41%和68%），速度比小于1.4与速度比为1.4或更高时的通畅率（分别为63%和57%），以及速度比小于2.0与速度比为2.0或更高时的通畅率（分别为54%和74%）。我们发现血管成形术后双功超声检查结果正常的患者与结果异常的患者之间在通畅率方面没有显著差异。
外周血管成形术后立即获得的双功超声检查异常结果不能用于预测亚急性再狭窄。
