Table 2.
a) Arterial blood | Historical control group | Synchronous control group | Covid-19 patients |
---|---|---|---|
n = 1089 | n = 73 | n = 139 | |
Age (years) | 69 ± 18 | 67 ± 18 | 66 ± 17 |
Women (%) | 46 | 45 | 43 |
Number of blood gas analyses (n) | 2614 | 251 | 549 |
PaO2 (mmHg) | 87 ± 46 | 86 ± 28 | 88 ± 33 |
CaO2 (ml/dL) | 16.2 ± 4.1 | 15.5 ± 3.9 | 17.5 ± 3.2***+++ |
PaCO2 (mmHg) | 43.5 ± 12.9 | 42.0 ± 12.8 | 39.4 ± 10.5***++ |
pH | 7.40 ± 0.09 | 7.41 ± 0.08 | 7.42 ± 0.08*** |
Bic. Standard (mmol/L) | 25.4 ± 5.2 | 25.8 ± 7.0 | 24.6 ± 4.0***+ |
BE (mmol/L) | 0.7 ± 4.5 | 0.3 ± 4.8 | −0.7 ± 3.9***++ |
Hb (g/dl) | 12.4 ± 2.3 | 11.8 ± 2.4 | 13.3 ± 1.8***+++ |
Ferritin (ng/mL) | 553 ± 690 (NR1) | 725 ± 687 (NR2) | 1280 ± 1628***+ |
b) Venous blood | Historical control group | Synchronous control group | Covid-19 patients |
---|---|---|---|
n = 1461 | n = 379 | n = 215 | |
Age (years) | 65 ± 23 | 64 ± 22 | 67 ± 18 |
Sex (women, %) | 46 | 46 | 49 |
Number of blood gas analyses (n) | 3098 | 1069 | 544 |
PvO2 (mmHg) | 34 ± 9 | 34 ± 9 | 34 ± 9 |
PvCO2 (mmHg) | 45.7 ± 10.0 | 45.8 ± 10.7 | 44.8 ± 9.2*+ |
CvO2 (ml/dL) | 10.3 ± 5.4 | 9.8 ± 5.1 | 11.2 ± 5.2*++ |
pH | 7.37 ± 0.07 | 7.36 ± 0.08 | 7.38 ± 0.06***+++ |
Bic. Standard (mmol/L) | 24.0 ± 4.3 | 23.8 ± 5.2 | 24.4 ± 4.0*++ |
BE (mmol/L) | 0.3 ± 4.0 | −0.2 ± 4.2 | 1.0 ± 4.1***+++ |
BE: base excess; Bic.: bicarbonate; CaO2: oxygen in arterial blood; COVID-19: coronavirus disease of 2019; CvO2: oxygen in venous blood; PaO2: partial pressure of oxygen in arterial blood; PaCO2: partial pressure of carbon dioxide in arterial blood; pH: potential of hydrogen; PvCO2: partial pressure of carbon dioxide in venous blood; PvO2: partial pressure of oxygen in venous blood.
Significance levels between historical control and Covid-19 patients:
* p ≤ 0.05; ** p ≤ 0.01; *** p ≤ 0.001.
Significance levels between synchronous controls and Covid-19 patients: + p ≤ 0.05; ++ p ≤ 0.01; +++ p ≤ 0.001.