• Middle East J Anaesthesiol · Oct 2004

    Carotid endarterectomy: a study of cerebral oxygen saturation vs stump pressure.

    • Abdelazeem Ali El-Dawlatly.
    • Dept of Anaesthesia, College of Med, King Saud University, Riyadh 11461, Saudi Arabia. dawlatly@ksu.edu.sa
    • Middle East J Anaesthesiol. 2004 Oct 1; 17 (6): 1037-44.

    Background And AimsCarotid endarterectomy (CEA) is an established surgical procedure for treatment of internal carotid artery (ICA) stenosis. To determine whether or not a carotid shunt is necessary to place, some surgeons measure the stump pressure. We conducted the current study in order to identify whether or not cerebral oxygen saturation (rS02%) can serve as another quantitative measurement to determine the need of carotid shunt during CEA.Materials And MethodsTen patients who underwent CEA under general anesthesia were studied. The stump pressure was measured during ICA clamping and rSO2% was measured during three phases: A) prior to ICA clamping, B) during ICA clamping and C) after ICA declamping. The data were subjected to one-way ANOVA and correlation coefficient analysis. The mean age was 62+/-7 yr and the mean body weight was 66+/-7kg.ResultsThe stump pressure and rSO2% mean values were 45+/-9 mmHg and 57+/-7% respectively during ICA clamping. Correlation coefficient revealed significant positive relationship, r = 0.724(P = 0.009).ConclusionsrSO2% may serve as another quantitative measurement to determine the need for carotid shunt during CEA surgery. Due to the small number of cases in the current study, the critical rSO2% which warrants carotid shunt placement could not be identified. Therefore, large number of patients are required to define the critical rSO2% during CEA surgery.

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