Study on mechanical power in MIMIC-III and eICU-CRD.
If using this code, please cite the above DOI as follows:
Johnson, Alistair E W, Rodrigo O. Deliberato, Art S. Neto. alistairewj/mechanical-power: Mechanical Power v1.0.0. Zenodo. DOI: 10.5281/zenodo.3263855.
We would also be grateful if you would cite the relevant article:
Neto, Ary S.*, Rodrigo O. Deliberato*, Alistair E. W. Johnson*, Lieuwe D. Bos*, Pedro Amorim, Silvio Moreto Pereira, Denise Carnieli Cazati et al. "Mechanical power of ventilation is associated with mortality in critically ill patients: an analysis of patients in two observational cohorts." Intensive care medicine 44, no. 11 (2018): 1914-1922.
* Equal contribution.
Link to article: https://doi.org/10.1007/s00134-018-5375-6
Mechanical power (MP) may unify variables known to be related to development of ventilator-induced lung injury. The aim of this study is to examine the association between MP and mortality in critically ill patients receiving invasive ventilation for at least 48 h.
This is an analysis of data stored in the databases of the MIMIC–III and eICU. Critically ill patients receiving invasive ventilation for at least 48 h were included. The exposure of interest was MP. The primary outcome was in-hospital mortality.
Data from 8207 patients were analyzed. Median MP during the second 24 h was 21.4 (16.2–28.1) J/min in MIMIC-III and 16.0 (11.7–22.1) J/min in eICU. MP was independently associated with in-hospital mortality [odds ratio per 5 J/min increase (OR) 1.06 (95% confidence interval (CI) 1.01–1.11); p = 0.021 in MIMIC-III, and 1.10 (1.02–1.18); p = 0.010 in eICU]. MP was also associated with ICU mortality, 30-day mortality, and with ventilator-free days, ICU and hospital length of stay. Even at low tidal volume, high MP was associated with in-hospital mortality [OR 1.70 (1.32–2.18); p < 0.001] and other secondary outcomes. Finally, there is a consistent increase in the risk of death with MP higher than 17.0 J/min.
High MP of ventilation is independently associated with higher in-hospital mortality and several other outcomes in ICU patients receiving invasive ventilation for at least 48 h.