In comparison to the use of only sterile gloves and a small drape, full barrier precautions (i.e. the addition of a long与只使用无菌手套和小单相比，完善的预防机制（即还使用长袖无菌手术衣、口罩、帽子及大的消毒手术单）证明可以降低导管相关血流感染的发生率[4]。