Diaphragmatic thickening fraction as a potential predictor of response to continuous positive airway pressure ventilation in Covid-19 pneumonia: A single-center pilot study.
Respir Physiol Neurobiol
; 284: 103585, 2021 02.
Article
in English
| MEDLINE | ID: covidwho-943569
ABSTRACT
BACKGROUND:
In a variable number of Covid-19 patients with acute respiratory failure, non-invasive breathing support strategies cannot provide adequate oxygenation, thus making invasive mechanical ventilation necessary. Factors predicting this unfavorable outcome are unknown, but we hypothesized that diaphragmatic weakness may contribute.METHODS:
We prospectively analyzed the data of 27 consecutive patients admitted to the general Intensive Care Unit (ICU) from March 19, 2020, to April 20, 2020 and submitted to continuous positive airway pressure (CPAP) before considering invasive ventilation. Diaphragmatic thickening fraction (DTF) inferred by ultrasound was determined before applying CPAP.RESULTS:
Eighteen patients recovered with CPAP, whereas nine required invasive mechanical ventilation with longer stay in ICU (p < 0.001) and hospital (p = 0.003). At univariate logistic regression analysis, CPAP failure was significantly associated with low DTF [ß -0.396; OR 0.673; p < 0.001] and high respiratory rate [ß 0.452; OR 1.572; p < 0.001] but only DTF reached statistical significance at multivariate analysis [ß -0.384; OR 0.681; p < 0.001]. The DTF best threshold predicting CPAP failure was 21.4 % (AUC 0.944; sensitivity 94.4 %, specificity 88.9 %).CONCLUSIONS:
In critically ill patients with Covid-19 respiratory failure admitted to ICU, a reduced DTF could be a potential predictor of CPAP failure and requirement of invasive ventilation.Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Diaphragm
/
Treatment Outcome
/
Continuous Positive Airway Pressure
/
COVID-19
Type of study:
Diagnostic study
/
Prognostic study
Limits:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Language:
English
Journal:
Respir Physiol Neurobiol
Year:
2021
Document Type:
Article
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