To the Editor.
—I am pleased to have an opportunity to comment on Dr Davenport's letter.1 Despite his assertion, careful reading of my article2 will demonstrate that there is no inconsistency in the numbers I report. However, the cryptic style imposed by the format of Controversies inNeurology may have contributed to a lack of clarity. To reiterate, of 282 consecutive endarterectomies, intraoperative electroencephalographic (EEG) monitoring was available in 211 cases and carotid stump pressure measurements in 131 cases. Simultaneous EEG monitoring was available in only 113 of the 131 cases with stump pressure measurements, and it is in those 113 cases that a direct comparison between the two monitoring techniques was made. Nine of the 113 cases had mean stump pressures equal to or less than 25 mm Hg. However, of the total of 131 cases with stump pressure measurements, 121 had mean stump pressures greater than 25
Ferguson GG. Shunting During Carotid Endarterectomy. Arch Neurol. 1988;45(1):15. doi:10.1001/archneur.1988.00520250017008