A simple method of mechanical power calculation: using mean airway pressure to replace plateau pressure
| Autor: | Yi Chi, Yun Long, Huaiwu He |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Respiratory Distress Syndrome 030208 emergency & critical care medicine Health Informatics Acute respiratory distress Mean airway pressure Critical Care and Intensive Care Medicine Respiration Artificial Combinatorics Positive-Pressure Respiration 03 medical and health sciences Plateau pressure 0302 clinical medicine Anesthesiology and Pain Medicine 030202 anesthesiology Plateau time Humans In patient Lung |
| Zdroj: | Journal of clinical monitoring and computing. 35(5) |
| ISSN: | 1573-2614 |
| Popis: | The reference method for mechanical power (MP) calculation proposed by Gattinoni et al. is based on plateau pressure (Pplat) which needs an inspiratory hold. This study aims to introduce and validate a simple surrogate for MP calculation without any intervention in ventilated patients with or without acute respiratory distress syndrome (ARDS). The introduced equation is as: $${\text{P}}_{{{\text{mean}}}} {\text{-derived MP}} = 0.1 \times {\text{VE}} \times [{\text{P}}_{{{\text{mean}}}} + ({\text{P}}_{{{\text{mean}}}} - {\text{PEEP}}) \times {\text{T}}_{{\text{e}}} /{\text{T}}_{{\text{i}}} ]$$ where Pmean is mean airway pressure, VE is minute ventilation, PEEP is positive end-expiratory pressure, and Te/Ti is expiratory-to-inspiratory ratio. 50 patients with ARDS and 50 post-operative patients without ARDS were enrolled. Pmean-derived MP and reference MP were obtained at the inspiratory plateau time (Tplat) of 0 and 0.5 s (s). When Tplat was adjusted from 0 to 0.5 s, higher Pmean [non-ARDS cases: 9.3 (8.8–9.9) cmH2O versus 8.2 (7.9–8.8) cmH2O, P |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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