Mitral Valve Insufficiency Clinical Trial
Official title:
TransCranial Doppler for REDUCtion of Silent strokE During MitraClip Implantation
The primary goal of the TCD-REDUCE study is to demonstrate the effectiveness of continuous transcranial Doppler sonography ("sonolysis") on the reduction of the ischemic stroke volume during MitraClip implantation.
Cardiac procedures are associated with new cerebral ischemic lesions detected on diffusion-weighted MRI (Bendszus et al., 2006). A previous study suggests that sonolysis (continuous transcranial Doppler sonography using a 2-MHz diagnostic probe) can reduce the risk of new cerebral ischemic lesions during carotid endarterectomy and carotid angioplasty / stenting (Skoloudik et al., 2015). Currently, it is unknown whether sonolysis can also reduce the risk of new cerebral ischemic lesions during MitraClip implantation - a percutaneous treatment option in patients with moderate / severe mitral regurgitation. In this study, patients will receive cerebral MRI and clinical neurological / neuropsychological examination before and after MitraClip implantation. During MitraClip implantation, all patients will receive continuous transcranial Doppler sonography using a 2-MHz diagnostic probe with maximal diagnostic energy administered through either the left or the right transtemporal window (computer-generated 1:1 randomization). The primary endpoint is the median ischemic lesion volume detected on diffusion-weighted MRI after MitraClip implantation in the sonolysis group and in the control group. ;
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