68.下列有關ivermectin中毒的敘述中，何者錯誤？
(A)促進GABA釋放而導致中樞神經被抑制
(B)橫臥或運動失調
(C)牧羊犬較易中毒
(D)瞳孔收縮

"高劑量使用時，ivermectin會引起中樞神經系統抑制作用，已經被證實的有倦怠、瞳孔放大、運動失調、倒躺及昏迷。"--獸醫藥理學手冊第一版，第393頁。

"The signs of acute toxicity include depression, ataxia, tremors, salivation, mydriasis, and in severe cases, coma and death."--Veterinary Pharmacology and Therapeutics 9th Edition, page 1139.

"Common findings in dogs recorded in decreasing frequency included vomiting, ataxia, lethargy, tachycardia, hypersalivation, mydriasis, and seizures."--Plumb's Veterinary Drug Handbook 7th Edition.

常見的不良反應包含倦怠、瞳孔放大、運動失調、倒躺、昏迷