3Montner PK, Greene ER, Murata GH, et al. Hemodynamic efects of nasal and face mask continuous positive airway pressure [ J ]. Am J Respir Crit Care Med,1994,149(6) :1614-1618.
4Esteban A, Anzueto A, Frutos F, et al. Mechanical Ventilation InternationalStudy Group. Characteristics and outcomes in adult patients receiving mechanical ventilation: a 28-day international study[J]. JAMA ,2002,287:345-355.