TY - T1的实验室比较四个正压呼吸器使用在家里JF -欧洲呼吸杂志》乔和J SP - 2410 LP - 2415欧元六世- 9 - 11 AU -史密斯,即非盟- Shneerson JM Y1 - 1996/11/01 UR - //www.qdcxjkg.com/content/9/11/2410.abstract N2 -四个品牌呼吸机用于无创正压通气在家里进行评估,以确定他们的表现在病人模拟器。我们测试了潮汐卷(VT)预设的同伴2801(清教徒Bennett)、分钟通气量预设Monnal D (Taema),和两个预设通风压力,凛冽的(周五医学)和上下两层的正压通气(BiPAP) (Respironics)。病人模拟器是用来调查之间的关系VT,气道压力(PAP)和平均气道压力峰值(地图),应对额外的泄漏电路和耐心努力的一个变量,使用负压泵是模仿。For equivalent VTs, >300 mL, the Monnal D and Nippy generated a PAP up to 100% greater than the Companion 2801 and BiPAP. When an additional leak was introduced to the circuit, the VT of the Companion 2801 and Monnal D fell by >50%, while the Nippy and the BiPAP responded by increasing flow and maintained VT close to the level achieved with no leak. When the ventilators were triggered by a simulated patient effort of 0.25 s duration with a frequency 33% greater than that of the ventilator, the minute volume increased by 41% for the Companion 2801, by 18% for the Monnal D (no change expected), and by 17% for the Nippy (less than expected), and fell by 7% for the BiPAP due to irregular triggering. When patient effort was prolonged to 1.5 s, a similar length to the inspiratory time of the ventilators, there was no further change in the minute volume of the Companion 2801 and Monnal D, while that of the Nippy and of the BiPAP increased by 38 and 71%, respectively, compared to baseline. These results show that distinct brands of ventilator respond to changes in the patient and patient circuit in different ways, which are not always predictable from a simple description of their operating principles. This should be borne in mind when choosing a positive pressure ventilator for noninvasive ventilation. ER -