5[1]Douglas WW, Rehder K, Froukje M B,et al.Improved oxygenation in patients with acute respiratory failure : the prone position. American Review of respiratory disease, 1977, 115: 559-566.
6[2]Pappert D, Rossaint R, Slama K, et al.Influence of positioning on ventilation-perfusion relationships in severe adult respiratory distress syndrome. Chest, 1994, 106: 1511-1516.
7[3]West JB. Respiratory physiology : the essentials, 3rd ed. Baltimore : Williams and Wilkins. 1985.68.
8[4]Gattinoni L, Pesenti A, Bombino M, et al. Relationships between lung computed tomographic density, gas exchange and PEEP in acute respiratory failure. Anaesthesiology, 1988, 69: 824-832.
9[5]Langer M, Mascheroni D, Marcolin R,et al. The prone position in ARDS patients : a clinical study. Chest, 1988, 91: 103-107.
10[6]Vollman KM.Prone positioning for the ARDS patient. Dimensions of critical care nursing, 1997, 16(4):184-193.
