3Von -Ungern-Sternberg B, Erb TO, Reber A, el al. Opening the upper airway -airway maneuvers in pediatric anesthesia[J]. Pediatr Anesth,2005,15(3):181-189.
4Evans RG, Crawford MW, Noseworthy MD, et al, Effect of increasing depth of propofol anesthesia on upper airway dimensions during routinemagnetic resonance imaging in pediatric patients sedated with propofol[J]. Anesthesiology,2003. 99(8) :596- 602.
5Arens R, Sin S, Mc-Donough JM, et al. Changes in upper airway size during tidal breathing in children with obstructive sleep apnea syndrome[J]. Am J Respi Crit Care Med,2005, 171(6): 1298- 1304.
6Litman RS, Wake N, Chan LML, et al. Effect of lateral positioning on upper airway size and morphology in sedated children[J]. Anesthesiology,2005, 103(9):484- 488.
7Arain CP, Fukunaga K, Hirota S,et al. The effects of chin lift and jaw thrust while in the lateral position on stridor score in anesthetized childrenwith adenotonsillar hypertrophy [J].Anesth Analg, 2004, 99 (12): 1638- 1641.
