NURSE-TO-PATIENT RATIO AND PNEUMONIA RISK The fewer nurses there are on duty in an intensive care unit, the more people on respirators get pneumonia, a new study has found.

• 护士对病人的比例和肺炎的危险,护士有责任就在重症监护病房更多的人对呼吸器获得性肺炎,一项新的研究发现。