A simple method of mechanical power calculation: using mean airway pressure to replace plateau pressure.
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 withou...
| Publicado en: | Journal of Clinical Monitoring & Computing Vol. 35; no. 5; pp. 1139 - 1148 |
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| Autores principales: | , , |
| Formato: | Journal Article |
| Publicado: |
Springer Nature
Oct2021
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=152902542&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 152902542 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 13871307 OHC jtl: Journal of Clinical Monitoring & Computing issn: 13871307 maglogo: N pubinfo: dt: Oct2021 vid: 35 iid: 5 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 152902542 152902542 NLM32780353 10.1007/s10877-020-00575-y NLM32780353 152902542 ppf: 1139 ppct: 9 formats: fmt: @attributes: type: P tig: atl: A simple method of mechanical power calculation: using mean airway pressure to replace plateau pressure. aug: au: Chi, Yi He, Huaiwu Long, Yun affil: Department of Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, 1 Shuaifuyuan, Dongcheng District, Beijing, China sug: ab: 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:[Formula: see text]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 < 0.001; ARDS cases: 14 (13-16) cmH2O versus 13 (11-14) cmH2O, P < 0.001] and shorter Te/Ti [non-ARDS cases: 1.4 (1.2-1.7) versus 2.4 (2.0-3.0), P < 0.001; ARDS cases: 1.3 (1.2-1.5) versus 2.5 (2.3-2.9), P < 0.001] were found. At both Tplat levels, the Pmean-derived MP correlated well with the reference MP both in patients with or without ARDS (non-ARDS: slopes = 1.05, 0.94, R2 = 0.95, 0.93, bias + 0.76, + 0.51; ARDS: slopes = 1.03, 0.95, R2 = 0.96, 0.96, bias + 0.97, + 0.78. P < 0.0001 for all). In patients with or without ARDS, Pmean-derived MP allows rapid and dynamic estimation of mechanical power without any intervention at the bedside. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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