The Difference Between Set and Delivered Tidal Volume: A Lung Simulation Study
| Autor: | Yuko Matsuda, Tetsuya Miyashita, Stephani S. Kim, Yoshikazu Yamaguchi, Shunsuke Takaki, Takahisa Goto, Joseph D. Tobias, Makoto Sasaki |
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| Rok vydání: | 2020 |
| Předmět: |
Mechanical ventilation
Lung Respiratory rate business.industry Expiratory limb medicine.medical_treatment Biomedical Engineering Medicine (miscellaneous) 030209 endocrinology & metabolism respiratory system Lung injury respiratory tract diseases law.invention 03 medical and health sciences 0302 clinical medicine medicine.anatomical_structure law Anesthesia Ventilation (architecture) medicine Lung simulator business 030217 neurology & neurosurgery Tidal volume |
| Zdroj: | Medical Devices: Evidence and Research. 13:205-211 |
| ISSN: | 1179-1470 |
| DOI: | 10.2147/mder.s259760 |
| Popis: | Background Precise control of tidal volume is one of the keys in limiting ventilator-induced lung injury and ensuring adequate ventilation in mechanically ventilated neonates. The aim of the study was to compare the tidal volume (mVT) measured from the expiratory limb of the ventilator with the actual tidal volume (aVT) that would be delivered to the patient using a lung model to simulate a neonate. Methods This study was conducted using the ASL5000 lung simulator. Three combinations of parameters were set: resistance (cmH2O/L/sec) and compliance (mL/cmH2O) of 50 and 2 (Group 1), 100 and 1 (Group 2), and 150 and 0.5 (Group 3), respectively. The ASL5000 was connected to each of the ventilators including one anesthesia machine ventilator (Drager Fabius GS) and two ICU ventilators (Servo-i Universal and Evita Infinity V500). Each ventilator was evaluated with a set tidal volume of 30 mL (sVT) and a respiratory rate of 25 breathes/minute in both the volume-controlled ventilation (VCV) and dual-controlled ventilation (DCV) modes. Results The discrepancies between sVT, mVT and aVT were highest with the Fabius anesthesia machine ventilator and increased in the simulated lung injury groups. When comparing the ICU ventilators, the difference was greater the Servo-i and increased when using the DCV mode and with simulated lung injury. Conclusion Accurate tidal volumes were achieved only with the Infinity ICU ventilator. This was true regardless of mode of ventilation and even during simulated lung injury. |
| Databáze: | OpenAIRE |
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