TY - JOUR
T1 - Unrecordable pulsatile ocular blood flow may signify severe stenosis of the ipsilateral internal carotid artery
AU - Barkana, Y.
AU - Harris, A.
AU - Hefez, L.
AU - Zaritski, M.
AU - Chen, D.
AU - Avni, I.
PY - 2003/12
Y1 - 2003/12
N2 - Aim: To examine the relation between stenosis of the internal carotid artery (ICA) and pulsatile ocular blood flow (POBF). Methods: In 57 eyes of 30 patients who were referred for Doppler ultrasound examination of the ICA we measured POBF and analysed the correlation with degree of ipsilateral ICA stenosis. Results: There was a significant negative correlation between POBF and ipsilateral ICA stenosis (Pearson correlation coefficient, r = -0.516, p <0.0001). In 14 eyes POBF could not be measured by the OBF tonometer, and in 11 of these cases (79%) severe stenosis (>75%) of the ipsilateral ICA was present. When these eyes were excluded from analysis, there was no correlation between POBF and ICA stenosis (r = -0.02, p = 0.91). Among these 43 eyes in which POBF could be measured it ranged 667-2095 μl/min with a mean of 970.72 μl/min. Conclusion: Low or unrecordable POBF may signify severe stenosis of the internal carotid artery. POBF is not a direct reflection of ipsilateral ICA blood flow.
AB - Aim: To examine the relation between stenosis of the internal carotid artery (ICA) and pulsatile ocular blood flow (POBF). Methods: In 57 eyes of 30 patients who were referred for Doppler ultrasound examination of the ICA we measured POBF and analysed the correlation with degree of ipsilateral ICA stenosis. Results: There was a significant negative correlation between POBF and ipsilateral ICA stenosis (Pearson correlation coefficient, r = -0.516, p <0.0001). In 14 eyes POBF could not be measured by the OBF tonometer, and in 11 of these cases (79%) severe stenosis (>75%) of the ipsilateral ICA was present. When these eyes were excluded from analysis, there was no correlation between POBF and ICA stenosis (r = -0.02, p = 0.91). Among these 43 eyes in which POBF could be measured it ranged 667-2095 μl/min with a mean of 970.72 μl/min. Conclusion: Low or unrecordable POBF may signify severe stenosis of the internal carotid artery. POBF is not a direct reflection of ipsilateral ICA blood flow.
UR - http://www.scopus.com/inward/record.url?scp=0347517737&partnerID=8YFLogxK
U2 - 10.1136/bjo.87.12.1478
DO - 10.1136/bjo.87.12.1478
M3 - Article
C2 - 14660457
AN - SCOPUS:0347517737
SN - 0007-1161
VL - 87
SP - 1478
EP - 1480
JO - British Journal of Ophthalmology
JF - British Journal of Ophthalmology
IS - 12
ER -