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- W4250559898 abstract "Abstract Background: It has been suggested that COVID-19-associated severe respiratory failure (CARDS) might differ from usual acute respiratory distress syndrome (ARDS) due to failing auto-regulation of pulmonary vessels and higher shunt. We sought to investigate pulmonary hemodynamics and ventilation properties in patients with CARDS compared to patients with ARDS of pulmonary origin. Methods: Retrospective analysis of prospectively collected data of consecutive adults with laboratory-confirmed severe acute respiratory syndrome coronavirus 2 patients treated on our ICU in 04/2020 and comparison of the data to matched controls with ARDS due to respiratory infections treated on our ICU from 01/2014 to 08/2019 and for whom pulmonary artery catheter data were available. Results: CARDS patients (n = 10) had similar ventilation characteristics as compared to ARDS (n = 10) patients. Still, mechanical power applied by ventilation was significantly higher in CARDS patients (23.4 ± 8.9 J/min) than in ARDS (15.9 ± 4.3 J/min; p<0.05). COVID-19 patients had similar pulmonary artery pressure but significantly lower pulmonary vascular resistance, as cardiac output was higher in CARDS vs. ARDS patients (p<0.05). Shunt fraction and dead space were similar in CARDS compared to ARDS (p>0.05) and was in both groups correlated with hypoxemia. The arterio-venous pCO 2 difference (DpCO 2 ) was elevated (CARDS 5.5±2.8 mmHg vs. ARDS 4.7±1.1 mmHg; p>0.05) as was P (v-a) CO 2 /C (a-v) O 2 ratio (CARDS mean 2.2±1.5 vs. ARDS 1.7±0.8; p>0.05). Conclusions: Respiratory failure in COVID-19 patients seems to differ only slightly from ARDS regarding ventilation characteristics and pulmonary hemodynamics. Differences are mainly due to increased CO 2 production in CARDS patients. Our data indicate microcirculatory dysfunction. More data needs to be collected to assure these findings and gain more pathophysiological insights in COVID-19 and respiratory failure." @default.
- W4250559898 created "2022-05-12" @default.
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- W4250559898 date "2020-09-02" @default.
- W4250559898 modified "2023-10-16" @default.
- W4250559898 title "Pulmonary Hemodynamics and Ventilation in Patients With COVID-19-related Respiratory Failure and ARDS" @default.
- W4250559898 doi "https://doi.org/10.21203/rs.3.rs-66763/v1" @default.
- W4250559898 hasPublicationYear "2020" @default.
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