Objective: To investigate clinical and etiological characteristics, predisposing factors of hospital-acquired pneumonia (HAP) in senile people and to explore the preventive and therapeutic strategies.
目的探讨老年人院内获得性肺炎（HAP）的临床、病原学特点、易患因素及防治对策。
Objective: to study the predisposing factors of incidence of pneumonia acquired in intensive care unit (ICU), and to analyze the distribution of etiological agents and drug sensitive rate to bacteria.
目的：探讨重症监护病房(icu)患者发生获得性肺炎的危险因素、病原体分布及药敏情况。
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