Hypercapnic Alteration of Visual Evoked Responses in Acute Cerebral Infarction
- 1 October 1979
- journal article
- research article
- Published by American Medical Association (AMA) in Archives of Neurology
- Vol. 36 (10) , 627-629
- https://doi.org/10.1001/archneur.1979.00500460061008
Abstract
• To determine the effect of inhaled carbon dioxide on acute ischemic cerebral injury, we have compared occipital visual evoked responses (VER) at baseline and during hypercapnia in 20 patients with acute unilateral cerebral infarction (ten with and ten without homonymous hemianopsia) and in ten normal controls. Visual evoked responses were judged on the basis of interhemispheral symmetry. In eight of ten controls and six of 20 patients, baseline VERs were symmetrical and remained unchanged during hypercapnia. In 14 patients with asymmetrical baseline VERs, hypercapnia caused improvement of symmetry in five, worsening in three, and no change in six. Hypercapnic vasodilation may be either beneficial or deleterious to cerebral function in patients with acute cerebral infarction.This publication has 3 references indexed in Scilit:
- Regional cerebral blood flow in apoplexy due to occlusion of the middle cerebral arteryNeurology, 1970
- Alterations of visual evoked response in the presence of homonymous visual defectsElectroencephalography and Clinical Neurophysiology, 1963
- The EEG response (evoked potential) to light stimulus in manElectroencephalography and Clinical Neurophysiology, 1961