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Discussion

ABG interpretation

Trying to figure out these blood gas results but not sure how to interpret this one

pH 7.35

pCO2 54

p02 27

hc03 29

o2 sat 47

:confused::banghead:

Thanks

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  • Experts

Is this an assignment for school?

What have you determined so far?

  • Author
Is this an assignment for school?

What have you determined so far?

We were given a worksheet to do, I've done most of it but can't figure out this one.

I usually start with the pH, but the pH is normal while other ABGs are off, I think that might be why I'm having trouble interpreting these ABGs...

The pH is closest to being acidosis. It was caused by the high PaCO2. The body has responded by increasing the HCO3 level to bring the pH back to normal.

The pt has respiratory acidosis fully compensated.

However that is not the important thing in that ABG. Look at the o2 readings!

  • Experts

You always look at the pH, CO2, and HCO3 to determine whether you have metabolic or respiratory acidosis or alkalosis. The other values tell you how the patient is coping with their situation. What is going on with the CO2 is the respiratory component; the HCO3 is the metabolic component.

The CO2 is very elevated. pH is at low end of normal. This patient is in respiratory acidosis. However, the pO2 indicates the patient is underventilated and the O2 sat indicates decreased hemoglobin saturation. This patient is hypoxic and in danger of going into respiratory distress if not there already. I'd be anticipating possible intubation and ventilator support.

  • Author

Thanks everyone for your replies this has helped a lot!:)

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