CAJ | 학술논문

目的：了解PB840呼吸机在不同呼气末正压通气（PEEP）水平及不同压力触发灵敏度下吸气触发做功的变化。方法将FLUKE VT-Plus气流分析仪串联在待测呼吸机与主动模拟肺之间，通过主动模拟肺模拟患者的自主呼吸，应用气流分析仪采集自主呼吸触发呼吸机做功时的呼吸参数及波形。结果主动模拟肺吸气触发流速、实际触发压力和触发做功随PEEP值的增加而增加，其中实际触发压力与设定的压力触发灵敏度的差值反映了内源性PEEP的增加。结论对不同PEEP水平、不同压力触发灵敏度条件下，患者触发呼吸机所需做功的变化进行分析，可辅助医生在进行呼吸机治疗时正确评估患者的病情，使用合理的呼吸模式，设定合适的呼吸机参数，并对患者的呼吸功能进行快速评价，从而提高呼吸机治疗的有效性和安全性。
목적：료해PB840호흡궤재불동호기말정압통기（PEEP）수평급불동압력촉발령민도하흡기촉발주공적변화。방법장FLUKE VT-Plus기류분석의천련재대측호흡궤여주동모의폐지간，통과주동모의폐모의환자적자주호흡，응용기류분석의채집자주호흡촉발호흡궤주공시적호흡삼수급파형。결과주동모의폐흡기촉발류속、실제촉발압력화촉발주공수PEEP치적증가이증가，기중실제촉발압력여설정적압력촉발령민도적차치반영료내원성PEEP적증가。결론대불동PEEP수평、불동압력촉발령민도조건하，환자촉발호흡궤소수주공적변화진행분석，가보조의생재진행호흡궤치료시정학평고환자적병정，사용합리적호흡모식，설정합괄적호흡궤삼수，병대환자적호흡공능진행쾌속평개，종이제고호흡궤치료적유효성화안전성。
Objective To understand the changes in inspiration-triggered work of PB840 Ventilator under different PEEP (Positive End-Expiratory Pressure) levels and pressure trigger sensitivity.Methods FLUKE VT-Plus AirStream Analyzer was connected in series between the to-be-measured ventilator and the active simulated lungs. The active simulated lung could simulate patients’ spontaneous breath. Then, the air stream analyzer was deployed for acquisition of breathing parameters and waveform when the work of PB840 Ventilator was triggered by spontaneous breath.Results With the increase of PEEP value, the speed of air stream triggered by inspiration of the active simulated lung, the actual trigger pressure and the work of trigger increased. The differences between the actual trigger pressure and the set pressure trigger sensitivity reflected the increase of endogenous PEEP.Conclusion Analysis of the changes in patient-triggered work of ventilators under different PEEP levels and pressure trigger sensitivity could help doctors to correctly assess the patient's conditions during ventilator therapy and set proper settings of the ventilator. Moreover, it also contributed to quick evaluation of patients’ breathing function so as to improve the effectiveness and safety of ventilator therapy.