Pharmacological aspects of opiates were simply reviewed, and the usefulness of an opiate analgesic fentanyl when concurrently used with droperidol as neuroleptanalgesia was mentioned. Furthermore, the antagonism by naloxone to fentanyl-induced respiratory depression was experimentally demonstrated.

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14頭の犬に対してパンクロニウムを投与してネオスチグミンの拮抗効果について検討を加えた結果, 以下のような成績が得られた。
(1) PBの効果は, ハロセン麻酔下で0.05mg/kgの静脈内投与量で十分な筋弛緩効果が得られた。
(2) NSの拮抗効果は呼吸筋の回復が優先するが, 骨格筋の完全な回復はかなり遅れて認められた。
(3) NS投与後の副作用のうち循環器系への影響はアトロピンで拮抗されたが, 流涎が高頻度に認められたことは一考を要する。

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Enflurane anesthesia in 7 clinical cases of 10-14 year-old, poor risk (ps 2-4) dogs were studied.
The result showed that 1) There had a short, smooth period of preanesthesia and recovery stage. 2) The body temperature were depressed average 1.5°C/hour, after anesthesia it returned to preanesthesia temperature in 1 hour. 3) Respiratory depression were presented althout it were stable. 4) The blood presure were stablized in anesthesia. 5) There had no remarkable C.B.C. and serum chemistry changes, also didn't showed liver or/and renal disturbance. 6) Use enflurane anesthesia for aging or/and poor risk dogs as well as halothane, is an effective anesthesia for veterinary clinician.

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