【多选题】【消耗次数：1】
中毒导致休克的原因有哪些（）
①
A剧烈的吐泻导致血容量减少，如As2O3中毒
②
B严重的化学灼伤，由于血浆渗出而 血容量减少，如强酸强碱等中毒
③
C毒物抑制血管舒缩中枢引起周围血管扩张，有效血容量不足
④
D心肌梗塞，见于吐根碱、锑、砷等中毒。
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提示血容量不足的指标为（ ）
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