View clinical trials related to Cerebral Embolism.
Filter by:During different interventional cardiology procedures we aim to identify cerebral microemboli load. Further we aim to differentiate the quality and the quantity of cerebral microemboli.We will measure cerebral microemboli in different interventional phases, e.g. during valve deployment, rapid pacing, post-implantation.
Because atrial fibrillation occurs frequently in heart surgery patients, our overall hypothesis is that systematic closing the left atrial appendage during surgery will reduce cerebral embolism coming from the thrombus formation in the left atrium. The specific hypothesis which sought tested is that closure of the left atrial appendage in connection with elective CABG and / or valve surgery will lead to fewer strokes and micro cerebral infarcts measured by MRI.
There is increasing evidence that renal replacement therapy (= continuous veno-venous hemodialysis) generates cerebral microembolism which is detectable on transcranial Doppler ultrasound. The aim of this study is to monitor patients with transcranial Doppler under two conditions: during hemodialysis and in a hemodialysis-free interval (in each period cerebral embolic load is detected during 30 minutes). The study hypothesis is that during hemodialysis the cerebral embolic load is significantly higher than in the hemodialysis-free interval.
The purpose of this study is to determine whether autologous bone marrow mononuclear cells transplantation after stroke is safe and/or effective to improve neurological outcome.