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经胸超声心动描记可发现2.8％成年人、25％脑栓塞者有二尖瓣膜及环钙化,病人患二尖瓣钙化(MAC)可增加危险因素1倍。可是,MAC与卒中之间的病理生理学联系仍不肯定。 作者报道2例脑栓塞病人,经食道超声心动描记(TEE)证实在钙化的二尖瓣上有血栓团块。例1,女,74岁,白人,患右侧轻偏瘫及失语,Babinski征阳性。心脏检查正常。MRI证实左基底节急性缺血性梗塞,左侧MCA分布区白质和皮质有梗塞。经颅多普勒超声扫描证实左MCA水平支发生严重涡流。经胸超声
Transthoracic echocardiography found that 2.8% of adults, 25% of patients with cerebral embolism have mitral valve and ring calcification, patients suffering from mitral valve calcification (MAC) can increase the risk factor 1 times. However, the pathophysiological link between MAC and stroke remains uncertain. The authors reported 2 patients with cerebral embolism who had transesophageal echocardiography (TEE) demonstrating the presence of a thrombus mass on the calcified mitral valve. Example 1, female, 74 years old, white, with right hemiparesis and aphasia, Babinski sign positive. Cardiac examination is normal. MRI confirmed left basal ganglia acute ischemic infarction, white matter and cortical infarction in the left MCA distribution. Transcranial Doppler ultrasound scan confirmed severe left ventricular branch of MCV eddy current. Trans-thoracic ultrasound