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.
Study Type
OBSERVATIONAL
Enrollment
50
Non-invasive measurement of cerebral embolic load and blood flow using TCD
Department of Anesthesiology and Pain Medicine
Bern, Switzerland
Quality of cerebral microemboli (solid vs. gaseous)
The quality of cerebral microemboli is measured by Doppler ultrasonography which automatically detects and analyses the Doppler signal coming from the middle cerebral artery. According to the strength of signal reflection, the signal will be qualified as solid or gaseous.
Time frame: intraoperative phase, expected to be approx. 4 hours
Quantity of cerebral microemboli load
The quantity of cerebral microemboli is measured by Doppler ultrasonography which automatically register the counts of solid and gaseous emboli.
Time frame: intraoperative phase, expected to be approx. 4 hours
Cerebral hemispheric differences (left vs. right)
Time frame: intraoperative phase, expected to be approx. 4 hours
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