5Ranieri V M,Giuliani R,Cinnella G,et al.Physiologic effects of positive end-expiratory pressure in patients with chronic obstructive pulmonary disease during acute ventilatory failure and controlled mechanical ventilation[J].Am Rev Respir Dis,1993;147:5-13.
6Kollef M H.The prevention of ventilator-associated pneumonia[J].N Eng J Med,1999,340:627-634.
7Kollef M H.Avoidance of tracheal intubation as a strategy to prevent ventilator-associated pneumonia[J].Intensive Care Med,1999,25:553-555.
8Kramer B.Ventilator-associated pneumonia in critically ill patients[J].Ann Intern Med,1999,130:1027-1028.
