Value of the ratio of peak systolic velocity of intra-stenotic superficial femoral artery and popliteal artery(PSV/ PSVpop) in dagnosis of superficial femoral artery sever stenosis
10.3760/cma.j.issn.1004-4477.2017.08.005
- VernacularTitle:股浅动脉狭窄段与腘动脉收缩期峰值流速比值(PSV/PSVpop)在股浅动脉重度狭窄超声诊断中的价值
- Author:
Mingjie GAO
1
;
Yang HUA
;
Xinyu ZHAO
;
Lingyun JIA
;
Chen LING
;
Weihong HOU
Author Information
1. 首都医科大学宣武医院血管超声诊断科
- Keywords:
Ultrasonography,Doppler,color;
Femoral artery;
Superficial femoral artery stenosis
- From:Chinese Journal of Ultrasonography
2017;26(8):667-671
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the diagnostic value of PSV/PSVpop,a new parameter detected by color Doppler ultrasonography,for patients with severe s tenosis (70 ％-99 ％)in superficial femoral artery (SFA).Methods One hundred and eighty-five cases (234 limbs) with SFA stenosis detected by CDU and confirmed by DSA were included in this study.Peak systolic velocity of intra stenotic(PSV),proximal stenotic (PSVpro),and popliteal artery (PSVpop) were measured and recorded respectively.The ratio of PSV/PSVpro,PSV/PSVpop were calculated.Using DSA as the gold standard,the cut off values for the diagnosis of severe stenosis were determined with receiver operating characteristics (ROC) analysis.The efficacy of the above parameters were compared.Results The new parameter PSV/PSVpop≥4 had 96.3％ of sensitivity,91.6％ of specificity,94.4％ of accuracy,95.7％ of positive predictive value,and 91.4％ of negative predictive value and 0.978 of area under the ROC curve(AUC) could define 70％-99％ stenosis of SFA.The AUC of PSV/PSVpop was higher than those of the traditional parameters PSV(0.922) and PSV/ PSVpro(0.920),the difference was statistically significant (P ＜0.01).The AUC of combined parameter PSV/PSVpop + PSV surpassed conventional combined parameter PSV/PSVpro + PSV (0.978 ∶ 0.940,P ＜ 0.05),but had no statistically significant difference with single parameter of PSV/PSVpop (0.978 ∶ 0.978,P ＞ 0.05).Conclusions The diagnostic efficacy of PSV/PSVpop is superior to traditional hemodynamic parameters in the diagnosis of SFA severe stenosis.
