Advantages of XXXX during carotid artery surgery.

@entity1 @entity63 @entity51 @entity400 @entity10470
One hundred carotid endarterectomies were performed using selective shunting based on @entity400 ( @entity400 ) for the detection of cortical @entity63 . Changes associated with @entity63 were loss of frequency and amplitude. The results of @entity400 were correlated with carotid stump pressure (CSP) measurements. Only one (4%) of the 25 @entity1 who developed an abnormal EEG had a mean CSP greater than 50 mmHg: however, @entity400 was positive in only 24 (45%) of the 53 @entity1 with a CSP less than 50 mmHg. Using EEG as a standard, no CSP criterion (50 or 25 mmHg) was sufficiently sensitive and specific to recommend its routine use (50 mmHg--96% and 61% respectively; 25 mmHg--40% and 96% respectively). Operative mortality was 1%. The three intraoperative @entity51 (3%), one transient and two permanent, are analyzed with respect to the operative EEG findings. In the 100 endarterectomy @entity1 and three more undergoing carotid exploration or excision of @entity10470 EEG changes due to anesthetic problems not associated with carotid clamping were often identified. In 48 additional endarterectomies a computerized display and disk storage of six selected EEG leads, each with a reference trace for comparison, has provided information equivalent to that from the full EEG. EEG monitoring is more accurate than CSP measurement for identifying @entity1 who require shunting, safely dispensing with a shunt in many cases which would otherwise be shunted by standard CSP criteria.(ABSTRACT TRUNCATED AT 250 WORDS)
