Related Experiment Videos
[Effects of carotid artery thrombendarterectomy on pulsatile ocular blood flow]
H C Gäckle1, C W Spraul, L H Eberhart
1Universitäts-Augenklinik Ulm.
Unlabelled:
Successful operations of clinically significant carotid artery stenosis by carotid endarterectomy (CEA) are leading to a better perfusion in the region of this artery. It still creates problems to make a statement about cerebral and ocular perfusion during the operation.
Methods:
In 10 patients who underwent a CEA the pulse amplitude (PA) of the intraocular pressure (IOP) was measured intraoperatively by a pneumotomography (OBF-Systems, U.K.) and the so called pulsatile ocular blood flow (pOBF) was determined. The middle arterial blood pressure (MAP) was taken invasively during the operation.
Results:
During the clamping phases no PA could be recorded. PA (p = 0.04) and pOBF (p = 0.028) increased on the side which had been operated on. No correlations of PA and pOBF to MAP were found.
Conclusion:
This method can prove an increased pulsatile ocular blood flow after successful CEA.