[Effects of carotid artery thrombendarterectomy on pulsatile ocular blood flow].
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.


CONCLUSIONS
This method can prove an increased pulsatile ocular blood flow after successful CEA.
Gäckle
H C
HC
Universitäts-Augenklinik Ulm.
Spraul
C W
CW
Eberhart
L H
LH
Lang
G E
GE
Knittel
A J
AJ
Mickley
V
V
Sunder-Plassmann
L
L
Lang
G K
GK
D000368:Aged; D000369:Aged, 80 and over; D002343:Carotid Artery, Internal; D016893:Carotid Stenosis / Q000601:surgery; D016894:Endarterectomy, Carotid; D005123:Eye / Q000098:blood supply*; D005260:Female; D006801:Humans; D007429:Intraocular Pressure; D008297:Male; D008875:Middle Aged; D011673:Pulsatile Flow; D012039:Regional Blood Flow