BACKGROUND The identification of anaerobic metabolism in critically ill patients is a challenging task. Observational studies have suggested that the ratio of venoarterial PCO2 (Pv-aCO2) to arteriovenous oxygen content difference (Ca-vO2) might be a good surrogate for respiratory quotient (RQ). Yet Pv-aCO2/Ca-vO2 might be increased by other factors, regardless of anaerobic metabolism. At presen...

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Correspondence: Ewa Skopińska-Różewska, Department of Pathology, Biostructure Center, Medical University, Chałubińskiego 5, 02-004 Warsaw, Poland, Email: [email protected] Abstract Rhodiola quadrifida (Rq) roots and rhizomes are traditional natural drugs used in Asia as adaptogens and antidepressants. The aim of this work was to study the in vivo effect of aqueous and 50% hydro-alcoholic extr...

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