Monitoring COVID-19 pneumonia undergoing noninvasive respiratory support (NIRS), correlation between oscillometric reactance and Thoracic CT
European Respiratory Journal Conference: European Respiratory Society International Congress, ERS
; 60(Supplement 66), 2022.
Article
in English
| EMBASE | ID: covidwho-2284354
ABSTRACT
Introduction:
NIRS reduces intubation rate in COVID-19 pneumonia. Outcome is related to age, comorbidities, and baseline illness severity. Thoracic CT has prognostic value in COVID-19 pneumonia. Forced Oscillatory Technique (FOT) allows non-invasive assessment of respiratory reactance (Xrs) that is related to lung compliance. A pilot study showed FOT feasibility in patients with COVID-19 pneumonia receiving NIRS (1). Aim(s) Measuring Xrs in COVID19 patients receiving NIRS and correlate with CT. Method(s) The local ERB approved the study. 32 consecutive patients with moderate-severe COVID-19 ARDS were enrolled. Patients underwent non-invasive ventilation (NIV) alternated to High Flow Nasal Cannula (HFNC). In the first 24 hours of hospitalization triplicate FOT measurements were performed (Resmon ProFULL) according to current guidelines during HFNC. Within 1 week 28 patients underwent computed tomographic pulmonary angiography (CTPA) and collapsed, infiltrated and normally inflated areas were quantified (3D Slicer software). Result(s) 12 patients had altered Xrs-z score. Collapsed areas correlated with Xrs z-score (rho=0.37;p=0.046) and almost with inspiratory Xrs (rho=-0.36;p=0.055). Inflated areas correlated with inspiratory Xrs (rho=0.42;p=0.024) while infiltrated areas didn't. In our cohort CTPA and FOT parameters didn't discriminate outcomes but inflated areas were inversely related to hospitalization (rho=-0.43;p=0.04). Conclusion(s) FOT showed abnormal Xrs in a subset of patients. Xrs z-score is a noninvasive index of collapsed areas in COVID-19 pneumonia and could be useful in patients assessment and follow up.
Full text:
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Collection:
Databases of international organizations
Database:
EMBASE
Language:
English
Journal:
European Respiratory Journal Conference: European Respiratory Society International Congress, ERS
Year:
2022
Document Type:
Article
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