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【单选题】
下列关于休克早期儿茶酚胺(CA)的论述中,错误的是A.
休克时CA大量释放入血
B.
各种休克时血中CA 含量比正常高出许多倍
C.
CA 导致脑的小血管舒张
D.
导致微循环动-静脉短路开放，血液绕过真毛细血管网直接进入微静脉，组织血液灌流量因而减少
E.
导致皮肤、肌肉、腹腔脏器和肾的小血管收缩，外阻力升高，组织器官血液灌流减少
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