Correlation between degrees of extracranial cerebral artery stenosis and pressure ratio across stenosis
10.3760/cma.j.issn.1671-8925.2017.11.006
- VernacularTitle:颅外段脑动脉狭窄程度与狭窄远近端血管内压力比的相关性分析
- Author:
Yuhai GAO
1
;
Jin SHI
;
Dawei CHEN
;
Yingqian ZHANG
;
Weiqing ZHANG
;
Xuanzhu ZHAO
;
Xianfeng CHEN
Author Information
1. 空军总医院神经内科
- Keywords:
Extracranial cerebral artery;
Vascular stenosis;
Intravascular pressure;
Pressure ratio;
Collateral circulation
- From:
Chinese Journal of Neuromedicine
2017;16(11):1112-1116
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the correlation between degrees ofextracranial cerebral artery stenosis and pressure ratio across stenosis.Methods The patients with ≥ 50％ stenosis,admitted to our hospital and conformed by DSA from September 2015 to February 2017,were collected in this study.Collateral circulation compensation was assessed by DSA.The distal stenosis pressure (Pd) and stenosis pressure (Pa) were measured by pressure wire system;the pressure ratio across stenosis was recorded.Correlations of pressure ratio with stenosis rate and collateral circulation compensation were analyzed by Spearman correlation.Results Thirty one stenotic extracranial cerebral arteries (9 of carotid stenosis,12 of vertebral artery stenosis and 10 of subclavian artery stenosis) in 28 patients were collected.There were no perioperative complications or adverse events.The vascular stenosis rate showed negative correlation with pressure ratio (r=-0.615,P=0.000).In the subgroups,pressure gradient was negatively correlated with carotid artery stenosis rate (r=-0.948,P=-0.000),vertebral artery stenosis rate (r=-0.757,P=0.004) and subclavian artery stenosis (r=-0.759,P=0.011).Pressure ratio and collateral circulation compensation showed negative correlated relation (r=-0.475,P=0.007).Conclusion The pressure ratio across stenosis gets worse impairment with increase of severity of stenosis,and the collateral circulation influences the pressure ratio.
