ABSTRACT
Objective:To analyze the advantages of the pressure-regulated volume control (PRVC) mode compared with the traditional continuous mandatory ventilation (CMV) mode about mechanical ventilation efficiency of ventilator.Methods: For the mechanical ventilation situations, the parameters of PRVC mode, V-CMV mode and P-CMV mode under same detecting conditions were tested by using gas analyzer, which based on the ventilation principle of PRVC mode. And then the differences between PRVC mode and CMV modes were analyzed. Results: PRVC mode can supply the almost same tidal volume, and provide lower pressure and higher compliance compare with the V–CMV mode under the same conditions. On the other hand, PRVC mode can supply more tidal volume and slightly higher compliance compare with the P–CMV mode under the same pressure.Conclusion: PRVC mode has combined with the advantages of CMV mode, and it can make sure the target tidal volume, at the same time, reduce the pressure of airway, and improve the compliance for circuit. It also can make the mechanical ventilation to got more efficiency and more safety.
ABSTRACT
Objective:To test the ventilator system calibration error, and analyze the effects of mechanical ventilation parameters and the related safety.Methods: Based on the system calibration principle of ventilator, the mechanical ventilation performance of the ventilator with calibration error was tested by the gas analyzer and the correlation of mechanical ventilation parameters and the system calibration error was analyzed.Results:The pressure drop value and a lower compliance can affect the tidal volume, the mean airway pressure and the peep values. Conclusion: The system calibration is important before operating mechanical ventilation. It can make safe, accurate and efficient in mechanical ventilation with controlling the system calibration error in a limited range.