Application of right heart contrast echocardiography in patients with transient ischemic attack of unknown cause

VernacularTitle:右心声学造影在不明原因短暂性脑缺血发作中的应用
Author: Xinyu WANG ; Hong JIN ; Lei WANG ; Dan YU
Keywords: Echocardiography; Ovale window; Ischemic attack,transient
From: Chinese Journal of Medical Imaging Technology 2017;33(4):487-489
CountryChina
Language:Chinese
Abstract: Objective To explore the application value of right heart contrast echocardiography in patients with transient ischemic stroke (TIA) of unknow cause.Methods Totally 120 patients with TIA (TIA group) and 60 cases of normal healthy volunteers (normal group) were enrolled.Two groups underwent right heart contrast echocardiography to observe whether there was a foramen ovale arteriosus (PFO) or not.Diagnostic criteria were left ventricular internal appearing micro bubble≥5 that came from the right atrium to left atrium in three cardiac cycles.Results Small and medium amount of right to left shunt had no significant difference between TIA group and normal group (both P＞0.05),and large amount of right to left shunt had significant difference between the two groups (P＜0.01).Conclusion Contrast echocardiography can effectively diagnose of PFO,and amount of right to left shunt of PFO has relationship with the onset of TIA.