Arterial vs Venous Blood Although these terms may sound a little familiar, the particulars are not commonly known. Therefore, the importance of bringing up the particular properties of venous and arterial blood would make more sense in understanding those. This article will not only discuss the properties, but also emphasize the differences between them.
Main Difference – Arterial vs Venous Blood. Arteries and veins are the two types of blood vessels found in a closed circulatory system in animals. Typically, in a double circulation system, arteries of the systemic circulation carry blood away from the heart and veins carry blood towards the heart.
Arterial blood, though more difficult to extract, has yet to exchange its gases with the body's various tissues. Arterial blood's higher oxygen content gives it its characteristic bright-red color, while venous blood, which has more carbon dioxide dissolved in it, tends to be a duller red or maroon color before it is exposed to air.
Although arterial blood remains the gold standard sample for blood gas analysis, it is, compared with peripheral venous blood, a more difficult sample to obtain, and its collection is more painful and hazardous for the patient.
The present study attempts to describe the agreement between arterial and venous blood values (pH, bicarbonate, partial pressures of carbon dioxide (P co 2) and oxygen (P o 2)) in order to determine whether VBG could replace ABG in the initial assessment of adult patients in an ED where diverse pathological conditions are encountered.
The sites from which venous blood can be sampled, measurements that can be performed on venous blood, and correlation of venous measurements with arterial measurements are reviewed here. Other alternatives to ABGs for estimating systemic carbon dioxide and pH are also described, including end-tidal carbon dioxide and transcutaneous carbon dioxide.
Arterial blood gas is a more reliable and accurate method for assessing the oxygenation. Arterial and venous blood gases provide similar and very close measurements in terms of PC02, HCO3, and pH levels. The comparison of arterial, peripheral vein and central blood gases
Capillary blood is not identical to venous blood. However, in many applications, these types of blood samples yield quality results for researchers and physicians alike. Capillary blood is a combination of arterial and venous blood. From the right side of the heart through the lungs, oxygenated arterial blood flows into the capillaries.
Reviewed and revised 7 January 2016 OVERVIEW Venous blood gases (VBG) are widely used in the emergency setting in preference to arterial blood gases (ABG) as a result of research published since 2001 The weight of data suggests that venous pH has sufficient agreement with arterial pH for it to be an acceptable alternative in clinical […]
Venous, Arterial, and Capillary Blood Specimens. ... The most common reason for collection of arterial blood is the evaluation of arterial blood gases. Arterial blood may be obtained directly from the artery (most commonly, the radial artery) by personnel who are trained to perform this procedure and are knowledgeable about the complications ...