Mechanical power normalized to predicted body weight is associated with mortality in critically ill patients: a cohort study

Autor: Yanhong Zhu, Wenyong Peng, Shuai Zhen, Xiaofeng Jiang
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: BMC Anesthesiology, Vol 21, Iss 1, Pp 1-9 (2021)
Druh dokumentu: article
ISSN: 1471-2253
DOI: 10.1186/s12871-021-01497-1
Popis: Abstract Background Mechanical power (MP), defined as the amount of energy produced by mechanical ventilation and released into the respiratory system, was reportedly a determining factor in the pathogenesis of ventilator-induced lung injury. However, previous studies suggest that the effects of MP were proportional to their involvement in the total lung function size. Therefore, MP normalized to the predicted body weight (norMP) should outperform the absolute MP value. The objective of this research is to determine the connection between norMP and mortality in critically ill patients who have been on invasive ventilation for at least 48 h. Methods This is a study of data stored in the databases of the MIMIC–III, which contains data of critically ill patients for over 50,000. The study involved critically ill patients who had been on invasive ventilation for at least 48 h. norMP was the relevant exposure. The major endpoint was ICU mortality, the secondary endpoints were 30-day, 90-day mortality; ICU length of stay, the number of ventilator-free days at day 28. Result The study involved a total of 1301 critically ill patients. This study revealed that norMP was correlated with ICU mortality [OR per quartile increase 1.33 (95% CI 1.16–1.52), p
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