VBG vs ABG (Venous blood gas Vs Arterial blood gas) .... who will get the championship???

[Soumya]

1. Sample source:

ABG: Arterial blood (radial/femoral artery)

VBG: Venous blood (peripheral vein)

2. Oxygen measurement:

ABG: Measures PaO₂ (accurate oxygenation status)

VBG: Not ver reliable to measure oxygenation (PaO₂ not accurate)

3. pH values:

ABG: Gold standard for blood pH

VBG: Little lower than arterial pH

4. Carbon dioxide (CO₂):

ABG: Measures PaCO₂ accurately

VBG: PvCO₂ is usually 4–6 mmHg higher than PaCO₂

5. Clinical use:

ABG: Evaluate respiratory failure, acid-base status, ventilation, and oxygenation

VBG: Estimate acid-base status when ABG is not available

6. Pain & invasiveness:

ABG: More painful, higher risk of complications

VBG: Less painful, easier

7. Limitations:

ABG: Difficult to access, risks of hematoma and ischemia

VBG: Not reliable for oxygenation status

What can be some other risks, benefits, and differences according to you??

[Adwaitha]

[Hbdoctor]

With pulse oxymetry telling you the O2 sats (SPO2), VBG is sufficient to dictate clinical decisions in majority of situations. ABG is more invasive and traumatic, hence no need to do this adventure again and again!
#ABG #VBG

[Aadish]