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因机械通气而发生下呼吸道感染的新生儿，通过气管内分泌物培养，结果示病源菌以Ｇ－杆菌为主，感染率为８２．７６％，且插管时间愈长，感染率愈高，因此提出相应预防措施，尽可能减少患者的感染发生率。
Neonates with lower respiratory tract infection due to mechanical ventilation were cultured with endotracheal tube. The results showed that the main pathogenic bacteria were G-bacilli. The infection rate was 82.76%. The longer the intubation time was, the higher the infection rate was. Propose appropriate precautionary measures to minimize the incidence of infection in patients.