VARIABILITY OF SOMATOSENSORY CORTICAL EVOKED-POTENTIALS DURING SPINAL SURGERY - EFFECTS OF ANESTHETIC TECHNIQUE AND HIGH-PASS DIGITAL FILTERING

被引：30

作者：

KALKMAN, CJ

TENBRINK, SA

BEEN, HD

BOVILL, JG

机构：

[1] Department of Anesthesiology, Academic Medical Center Meibergdreef, Amsterdam

[2] Orthopedic Surgery, Academic Medical Center, University of Amsterdam, Amsterdam

[3] Department of Anaesthesiology, Academic Hospital Leiden, University of Leiden, Leiden

来源：

SPINE | 1991年 / 16卷 / 08期

关键词：

SOMATOSENSORY EVOKED POTENTIALS; PHYSIOLOGICAL SPINAL CORD MONITORING; SPINAL SURGERY;

D O I：

10.1097/00007632-199108000-00010

中图分类号：

R74 [神经病学与精神病学];

学科分类号：

摘要：

The effects of anesthetic technique (nitrous oxide or propofol) and high-pass digital filtering on within-patient variability of posterior tibial nerve somatosensory cortical evoked potentials (PTN-SCEP) were compared prospectively in two groups of 20 patients undergoing spinal surgery. Average P1N1 amplitude was significantly higher and P1N1 amplitude variability lower during propofol/alfentanil anesthesia than during nitrous oxide/alfentanil anesthesia. Off-line 30-Hz high-pass digital filtering significantly reduced P1N1 amplitude variability without decreasing P1N1 amplitude. In 93 patients studied retrospectively, a significant negative logarithmic correlation (r = -0.77) was observed between P1N1 amplitude and P1N1 amplitude variability. This study shows the importance of maintaining the highest possible PTN-SCEP amplitudes during spinal surgery. Propofol/opioid anesthesia may be an alternative anesthetic technique to nitrous oxide/opioid anesthesia during spinal cord function monitoring.

引用

页码：924 / 929

页数：6

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