Validation of respiratory mechanics software in ... | 合法醫療器材資訊網

由RJKorst著作·1992·被引用10次—Backgroundandmethods:Severalmicroprocessor-controlledventilators,availableforclinicaluse,containoptionalcomputersoftwareprogramscapableof ...

Background and methods: Several microprocessor-controlled ventilators, available for clinical use, contain optional computer software programs capable of performing near-instantaneous determinations of airway resistance and lung compliance. This study was undertaken to determine the validity of the measurements for airway resistance and lung compliance obtained by the software packages on three microprocessor-controlled ventilators. Three ventilator models were studied. An artificial ventilator-patient circuit was constructed using a test lung and an endotracheal tube. Airway pressure and gas flow curves were recorded using conventional means. Static lung compliance and airway resistance were calculated using standard equations, while automated measurements were obtained from the ventilators. The following parameters were then varied to simulate a wide variety of clinical situations: tidal volume, peak inspirato...