聴性脳幹反応の単純超低体温麻酔下開心術における変化

概要

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A study was made on the physiological changes in ABR under the condition of deep hypothermia during open heart surgery. The results obtained were as follows. 1) The latencies of ABR were prolonged during the course of cooling of the body surface. The prolongation started first with Wave V, followed by Wave III and Wave I. The I-III and III-V interwave latencies were also prolonged with cooling. 2) The components of ABR disappeared at the level of rectal temperature from 22-C to 25-C and recovered perfectly at temperature as high as 34-C. 3) During the warming phase the latencies of ABR decreased, and the I-III and III-V interwave latencies shortened. These results indicated that ABR disappeared reversibly under a specific condition of hypothermia.
社団法人日本耳鼻咽喉科学会の論文