With a heparin lock, a catheter is placed in the vein, a drop of the blood-thinning medication heparin is added to prevent clotting, and the catheter is locked off.
肝素帽是在静脉里放置导管，添加血液稀释的肝素滴液以预防血管栓塞，而导管被锁住。
"Ah, here in the bed, I am sleeping," cried the third drop of blood.
“啊，在床上，我在睡觉。”第三滴血叫道。
Pleased, she presses down on the stone. A drop of blood falls into the mix.
她将手指按压在石头上，一滴血滴在了沙土中。
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