翻译：回顾性纳入2020年2月至2022年2月我院收治的186例不明原因脑梗死、短暂性脑缺血发作TIA、偏头痛的患者并经食道超声心动图或心导管检查证实为PFO的患者进行研究。分别进行经胸超声心动图下右心声学造影cTTE及经食道超声心动图下右心声学造影cTEE同时在cTEE增加配合患者自主Valsalva动作下操作者握拳放置患者腹部按压放松观察3个心动周期内左房左室内微气泡出现的数量评估房间隔水平右

A retrospective study was conducted on 186 patients admitted to our hospital from February 2020 to February 2022 with unexplained cerebral infarction, transient ischemic attack (TIA), and migraine, who were confirmed to have a patent foramen ovale (PFO) through transesophageal echocardiography or cardiac catheterization. Both transthoracic echocardiography (cTTE) and transesophageal echocardiography (cTEE) were performed. In addition, during cTEE, the operator clenched their fist and placed it on the patient's abdomen, applying pressure and then releasing it, while the patient performed a Valsalva maneuver. The number of microbubbles appearing in the left atrium and left ventricle within three cardiac cycles was observed to assess the degree of right-to-left shunting at the level of the interatrial septum