Preoperative cerebrovascular symptoms and electroencephalographic abnormalities do not predict cerebral ischemia during carotid endarterectomy
| Autor: | Maria Lopez-Bresnahan, Alan M. Zaslavsky, Lee A. Kearse, Kathleen McPeck |
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| Rok vydání: | 1995 |
| Předmět: |
Adult
medicine.medical_treatment Ischemia Carotid endarterectomy Electroencephalography Anesthesia General Asymptomatic Brain Ischemia Central nervous system disease Preoperative Care medicine Humans Prospective Studies Wakefulness Prospective cohort study Intraoperative Complications Aged Advanced and Specialized Nursing Aged 80 and over Neurologic Examination Endarterectomy Carotid medicine.diagnostic_test business.industry Vascular disease Age Factors Middle Aged medicine.disease Constriction Cerebrovascular Disorders Carotid Arteries Cerebral blood flow Ischemic Attack Transient Anesthesia Cerebrovascular Circulation Neurology (clinical) medicine.symptom Cardiology and Cardiovascular Medicine business Forecasting |
| Zdroj: | Stroke. 26(7) |
| ISSN: | 0039-2499 |
| Popis: | Background and Purpose The purpose of this prospective study was to establish (1) whether patients with neurological symptoms scheduled for carotid endarterectomy had an increased incidence of electroencephalographic (EEG) abnormalities during awake baseline recordings, (2) whether these symptoms and EEG abnormalities predicted ischemic EEG pattern changes at carotid artery cross-clamp, and (3) whether there was an association between age, presence of EEG baseline abnormalities, and ischemic pattern changes at carotid artery cross-clamp. Methods We reviewed the medical record of each patient scheduled to undergo carotid endarterectomy and recorded the patient’s age and history of previous neurological symptoms. We then continuously monitored and analyzed 16 channels of anteroposterior bipolar EEG and two of referential derivations from at least 5 minutes before induction of anesthesia and throughout the operation. Results We completed 394 consecutive studies. Preoperative neurological symptoms were related to EEG abnormalities in awake patients ( P P P Conclusions Despite the strong association between a history of cerebral ischemic symptoms and preoperative EEG abnormalities in patients undergoing carotid endarterectomy, patients who have suffered strokes or transient ischemic events are at no greater risk of having EEG evidence of cerebral ischemia during carotid artery cross-clamp than patients without symptoms and with normal baseline EEGs. We conclude that preoperative EEG abnormalities in symptomatic patients are not due to age or to insufficiency of regional cerebral blood flow. |
| Databáze: | OpenAIRE |
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