Key result
Carotid endarterectomy links to postoperative ocular hyperemia and ~14% greater ocular volume change in females.
Why the study?
The relationship between ocular volume change per minute measured by ocular pneumoplethysmography and carotid endarterectomy outcomes was not well characterized.
Does carotid endarterectomy affect ocular volume change per minute and ocular perfusion?
Observational (n=1,737)
Does carotid endarterectomy affect ocular volume change per minute and ocular perfusion?
Carotid endarterectomy resolves preoperative ocular hypoperfusion, leading to transient hyperemia, with sex differences in ocular volume change explained by physiological factors.
Should not alter carotid surgery protocols; hypothesis-generating for sex-specific ocular hemodynamic responses.
Ocular pneumoplethysmography was performed before and after 1,737 carotid endarterectomies, 82% of which were performed for carotid lesions of hemodynamic consequence. Preoperative ocular hypoperfusion without ischemia was associated with at least transient postoperative ocular hyperemia. A difference in ocular volume change per minute of 14.0%, female greater than male, was explained by sex differences in heart rate, brachial pulse pressure and eye size. These observations may have a direct application in the management of diabetic retinopathy with panretinal photocoagulation.
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Gee et al. (1999) conducted an observational in Carotid lesions (n=1,737). Carotid endarterectomy vs. Preoperative state was evaluated on Ocular volume change per minute. Carotid endarterectomy was associated with postoperative ocular hyperemia in those with preoperative hypoperfusion, and a 14.0% greater ocular volume change per minute in females versus males.
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