Between 1993 and 1998 , 20 consecutive patients were found by multiplane transesophageal echocardiography ( TEE ) to have non-obstructive PVT. TEE was performed for peripheral embolism in two patients , stroke or transient ischemic attack in six , stroke and fever in two , fever in one patient , as a routine postoperative examination in two patients , and for other reasons in seven .
