ABG Interpretation In 4 Easy Steps

with No comments 
In , ,  
ABGs (Arterial Blood Gases) Interpretation In 4 Easy Steps

First of All, You Should Know Few Normal Values –

pH = 7.35 – 7.45 [ Perfect pH = 7.40 ]
pCO₂ = 35 -  45 [ CO₂  = Acid ]
HCO₃ = 22 – 26 [ HCO₃  =  alkali ]
pO₂ = 80 - 100

Now Interpretation of ABGs In 4 Easy Steps-

1. Label The pH

< 7.40  Acidosis
> 7.40  Alkalosis

2. Look At The pCO₂ & HCO₃

High pCO₂  Respiratory Acidosis
Low pCO₂  Respiratory Alkalosis
High HCO₃  Metabolic Alkalosis
Low HCO₃  Metabolic Acidosis

3. Look At The pCO₂ & HCO₃ together as a pair

BOTH ARE OUTSIDE THE NORMAL RANGE & MOVING IN THE SAME DIRECTION : COMPENSATION

pH = 7.35 - 7.45  Fully Compensated
pH = Not in Normal range  Partially Compensated

4. Look at the pO₂

< 80  Hypoxia

ABG-interpretation-in-4-easy-steps


Q. A 57 year smoker presents to emergency with breathlessness and altered sensorium. His ABG analysis shows pH of 7.26 , pCO of 68 and HCO of 35.

(a) Metabolic Acidosis
(b) Respiratory Acidosis
(c) Compensated Metabolic Acidosis
(d) Respiratory Acidosis with compensatory Metabolic Alkalosis

Ans. (d) Respiratory Acidosis with compensatory Metabolic Alkalosis


Click Here
 to Download Handwritten Notes for NEET PG/ DNB/ AIIMS PG and Other Medical PG Entrance Preparation


Thank you Reader
Please Like and Share this post. LIKE Our Facebook Page to get latest updates. Contact us @ edumedwebstore[at]gmail.com if you have any queries.



Share:

0 comments:

Post a comment