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Abstract
A prospective study was undertaken to determine the efficiacy of monitoring somatosensory-evoked
potentials (SEP) during carotid artery surgery in predicting a new ischemic neurologic
deficit. Three hundred seventy-six patients underwent 400 reconstructions of the internal
carotid artery. The mortality rate of the entire series was 0.8%. In 383 procedures,
SEP amplitudes were always present during cross-clamping of the internal carotid artery.
In spite of that, three neurologic deficits occurred, but all were associated with
technical failures and not related to clamping ischemia. Complete loss of SEP amplitudes
was noted in 17 procedures. Five of seven patients without an indwelling shunt showed
a neurologic deficit after surgery, whereas shunt insertion in 10 resulted in three
neurologic deficits. It is concluded that at present SEP recording is an accurate
monitoring method in detecting clamping-related cerebral ischemia during carotid artery
surgery.
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Article info
Publication history
Accepted:
May 16,
1990
Identification
Copyright
© 1991 Published by Elsevier Inc.
