无创性机械通气 (MV)包括经面 (鼻 )罩正压机械通气 (FMMV)和负压通气 ,其中前者取得了重大进展 ,已成为治疗呼吸衰竭的重要手段。一、FMMV的呼吸生理学基础胸肺组织的压力 容积 (P V )曲线是合理MV的主要理论基础。正常P V曲线分为二段一点 ,即陡直段和高位平坦段 ,二段交点 Noninvasive mechanical ventilation (MV) includes face-mask positive pressure mechanical ventilation (FMMV) and negative pressure ventilation, of which the former has made significant progress and has become an important means of treating respiratory failure. First, the basis of the respiratory physiology of FMMV Thoracic and pulmonary pressure volume (P V) curve is the main theoretical basis for a reasonable MV. Normal P V curve is divided into two sections, that is, steep straight section and high flat section, two sections of the intersection