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題 名 | Effect of Isoflurane Anesthesia on Human Visual Evoked Potentials=Isoflurane對誘發視電位之影響 |
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作 者 | 何善臺; | 書刊名 | 中華民國外科醫學會雜誌 |
卷 期 | 21:2 1988.03[民77.03] |
頁 次 | 頁211-217 |
分類號 | 416.29 |
關鍵詞 | Isoflurane; 視電位; |
語 文 | 英文(English) |
中文摘要 | 在9位沒有中樞神經系統或眼疾病的患者,探討不同濃度Isoflurane對誘發視電位(visual evoked potentials ; VEP)之影響。 由實驗結果知道,VEP之P1 latency隨著Isoflurane濃度增加而延長;當潮氣未(end-tidal) Isoflurane濃度是1.2%或更高時,P1 latency較沒給Isoflurane時,有意義延長。然 而在任一連續兩種不同Isoflurane濃度,其P1 latency沒有統計上的差異。 因VEP之P1 latency在連續兩種不同Isoflurane麻醉濃度時沒有差異,則VEP無法有效監視Isoflurane麻醉深度。至於VEP應用於神經外科手術中,監測視神經路,如使用麻醉劑是Isoflurane,要了解Isoflurane對VEP的影響,以免VEP判讀錯誤。 |
英文摘要 | The visual evoked potentials (VEP) were monitored in 9 adult patients intraoperatively during isoflurane anesthesia Control measurements were made in these patients breathing room air and 100% oxygen prior to anesthetic induction. The latency of P1 increased progressively from 92.7±5.8 and 94.3±6.0 msec in room air and 100% oxygen, respectively, to the following values at 4 different end-tidal isoflurane levels: 95.4±8.8 msec at 0.9%; 111.6±16.1 msec at 1.2%; 115.8±15.8 msec at 1.4%; 120.6±5.9 msec at 1.8%. The latency increased significantly at or above 1.2% isoflurane, but there were no significant differences in latencies between two consecutive concentrations of isoflurane. At a concentration of 1.8% isoflurane, P1 could not be assessed in 7 patients (78% of patients studied). In conc1usion,VEP latency would not be an useful monitor of the anesthetic depth of isoflurane because of no significant differences between these anesthetic concentrations. Likewise, it should be carefully used to monitor the visual pathways during neurosurgery because of isoflurane increasing the P1 latencies. |
本系統中英文摘要資訊取自各篇刊載內容。