4Pepin JL, Leger P, Veale D, et al. Side effect of nasal continuous positive airway pressure in sleep apnea syndrome:study of 193 patients in tow French sleep centers[J]. Chest,2000,107:375-381.
5King M, Zahm JH, Pierrot D. The role of mucus gel viscosity,spinnability, and adhesive properties in clearance by simulated cough [J]. Biorheology, 1998,26: 737- 745.
6Jane M, Christopher B. Manual of clinical nursing procedures [M]. 4th ed. Philadelphia:Blackwell Science USA, 1996. 559-560.
7Martins DE, Araujo MT, Vieira SB, et al. Heated humidification or face mask to prevent upper airway dryness during continuous positive airway pressure therapy[J]. Chest,2000,117:142-147.