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The venous-to-arterial carbon dioxide difference [P(v-a)CO 2] was calculated from the difference of venous CO 2 and arterial CO 2, which has been used to reflect the global flow in the circulatory shock.Moreover, recent clinical studies found the P(v-a)CO 2 was related to the sublingual microcirculation perfusion in the sepsis. However, it is still controversial that whether P(v-a)CO 2 could ...


The key difference between arterial and venous blood gas is that arterial blood gas test uses a small blood sample drawn from an artery while venous blood gas test is a comparatively less painful test that uses a small blood sample drawn from a vein.. Blood is a body fluid that delivers vital substances such as nutrients, oxygen and ions, etc., into our cells and tissues.


The cardiovascular system in humans exists to enable aerobic cellular respiration: the consumption of energy in the form of glucose. As seen, oxygen is required as a reactant of cellular respiration and carbon dioxide is a product of the reaction....


McCanny P, Bennett K, Staunton P, McMahon G. Venous vs arterial blood gases in the assessment of patients presenting with an exacerbation of chronic obstructive pulmonary disease. Am J Emerg Med. 2012 Jul;30(6):896-900. PMID 21908141


The CO2 blood test measures the amount of carbon dioxide in the blood, which is present in the form of CO2, bicarbonate (HCO3), and carbonic acid (H2CO3). ... (an arterial blood draw) or a vein (a ...


A venous blood gas (VBG) is an alternative method of estimating systemic carbon dioxide and pH that does not require arterial blood sampling. Performing a VBG rather than an ABG is particularly convenient in the intensive care unit, since many patients have a central venous catheter from which venous blood can be quickly and easily obtained.


Objective. Recently, the central venoarterial carbon dioxide difference/arterial-central venous oxygen difference (P(v-a)CO 2 /C(a-v)O 2) ratio has been suggested as an additional indicator of anaerobic metabolism.We investigated the relationship between the P(v-a)CO 2 /C(a-v)O 2 ratio and 8-hour lactate clearance (LC) in septic patients after resuscitation.


Introduction. Since normal or high central venous oxygen saturation (ScvO 2) values cannot discriminate if tissue perfusion is adequate, integrating other markers of tissue hypoxia, such as central venous-to-arterial carbon dioxide difference (P cva CO 2 gap) has been proposed. In the present study, we aimed to evaluate the ability of the P cva CO 2 gap and the P cva CO 2 /arterial-venous ...


Purpose. To explore the relationship between central venous-to-arterial carbon dioxide difference (P cva CO 2), P cva CO 2 /arterial-venous oxygen content difference ratio (P cva CO 2 /C av O 2) and the microcirculatory status, evaluated by using near-infrared spectroscopy, in septic shock patients.


Arterial partial pressure of carbon dioxide (PaCO2) This is the partial pressure of carbon dioxide in the arterial blood. It is the indicator of alveolar ventilation. Its normal value is 40 mmHg at sea level, while it is 46.5 mmHg in venous blood. Increased values show respiratory acidosis, while decreased values demonstrate respiratory alkalosis.