Lactate Arterial-Central Venous Gradient among COVID-19 Patients in ICU: A Potential Tool in the Clinical Practice

Table 2

Results of the correlation analyses between Delta a-cv lactate and the study variables.

Variable	Correlation
Age (years)	= −0.278
Charlson comorbidity index	= −0.163
SAPS II score	r = −0.009
Brixia score	r = −0.161
Interleukin-6 (pg/mL)	= 0.203
Alanine aminotransferase (U/L)	= 0.111
Creatinine (mg/dL)	= −0.056
PaO2/FiO2 ratio	r = 0.182
Delta cv-a PCO2 (mmHg)	= −0.528

r-value: Pearson’s correlation coefficient; -value: Spearman’s correlation coefficient; SAPS II: Simplified Acute Physiology Score; a-cv: arterial-central venous; cv-a: central venous-arterial.