CHARACTERISTICS OF THE VENTILATOR PRESSURE-TRIGGER AND FLOW-TRIGGER VARIABLES

被引：51

作者：

SASSOON, CSH

GRUER, SE

机构：

[1] Pulmonary and Critical Care Section (111P), UCI-Long Beach Medical Program, Veterans Affairs Medical Center, Long Beach, 90822, CA

来源：

INTENSIVE CARE MEDICINE | 1995年 / 21卷 / 02期

关键词：

MECHANICAL VENTILATION; CONTINUOUS POSITIVE AIRWAY PRESSURE; WORK OF BREATHING; PRESSURE-TIME PRODUCT; SYNCHRONOUS INTERMITTENT MANDATORY VENTILATION;

D O I：

10.1007/BF01726540

中图分类号：

R4 [临床医学];

学科分类号：

1002 ; 100602 ;

摘要：

Pressure- and flow-triggering are available in the Puritan Bennett 7200 ae and Siemens SV300. Using a mechanical lung model, we described the characteristics of the pressure- and flow-triggered continuous positive airway pressure (CPAP) of both ventilators. In the Puritan Bennett 7200ae, the pressure-triggered CPAP is characterized by the relatively insufficient flow delivery after the triggering, resulting in a greater lung pressure-time product (total PTP) than the flow-triggered CPAP. Pressure support of 5 cmH(2)O results in total PTP less than that with flow-triggered CPAP. In the Siemens SV300, total PTP with pressure- or flow-triggered CPAP is comparable. Total PTP is less with pressure- or flow-triggered CPAP of the Siemens SV300 than that of the Puritan Bennett 7200 ae, respectively. The application of small pressure- or flow-triggered pressure support in the Puritan Bennett 7200ae eliminates the difference. The impact of these differences on patient inspiratory muscle work remains to be determined.

引用

页码：159 / 168

页数：10

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