metabolic acidosis

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metabolic acidosis

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pram
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03/14/06 - 06:10 AM

WOF is least likely with following arterial blood gas findings(metabolic acidosis)

PO2 78

PCO2 24

PH 7.18

a-DM ketoacidosis

b-Lactic acidosis

c- Salicylate toxicity

d- Paracetamol toxicity

e-Renal failure

drk1980
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03/14/06 - 07:52 AM

i'll just take a guess here wth paracetamol toxicity..

achilles
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03/14/06 - 08:35 PM

i'll go for d-paracetamol toxicity too...the reason been low PCO2...all the others are associated with hyperventilation...

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DrS
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03/14/06 - 10:08 PM

d- Paracetamol toxicity

achilles
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03/15/06 - 03:46 PM

could you pls post the answers to all your questions pram...thanks and these were good and tough questions.

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aimhigh
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03/15/06 - 06:19 PM

? I thought paracentamol induces metablic acidosis. I may choose Pco2 24 if I have to pick one.

aimhigh
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03/15/06 - 06:21 PM

The reason is that metabolic acidosis activates hyperventilation. The value of pco2 reflects the status of ventilation. low pco2--hyper ventilate; high pco2-hypo ventilate; 24-normal ventilation

jvo_md
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03/17/06 - 03:03 PM

All produces met ac..dont they?

Jinx
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05/16/06 - 07:10 PM

im totally confused with this one
Po2 decreased--so im thinking hypoventilation--since i dont think Po2 reduces to compensate metabolic alkalosis--so that means its respiratory acidosis

however-PCo2 is also decreased--which is contrary to what shd happen with hypoventilation?????

and no respiratory causes here at all

so is there some diffusion related issue here??
or could renal failure cause this somehow??

shaking head

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cyra
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05/16/06 - 07:37 PM

#10

Its got me stumped too!!

Although...doesn't salicylate toxicity predominantly cause a respiratory alkalosis initially?Of course later it can also cause metabolic acidosis and then give a mixed acid base disturbances.I am inclined towards salicylate toxicity.I dunno...hmmm... shaking head

Jinx
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05/16/06 - 08:00 PM

#11

on second thoughts--considering i shd first look at the pco2--this has to be a severe metabolic acidosis with respiratory compensation

then maybe the low po2 is due to some added respiratory issue
in which case--since all would produce acidosis--id go with paracetamol as the answer confused

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guayoman
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05/16/06 - 10:33 PM

#12

achilles wrote:
i'll go for d-paracetamol toxicity too...the reason been low PCO2...all the others are associated with hyperventilation...

I agree with Achilles here. Paracetamol would produce respiratory acidosis.

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jvo_md
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05/17/06 - 12:51 PM

#13

Paracetamol produces liver failure...Not that much related to met ac like the other ones

jvo_md
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05/17/06 - 12:52 PM

#14

Respiratory acidosis compensated wouldnt produce that low pco2

jvo_md
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05/17/06 - 12:53 PM

#15

And in compensation with met ac should be a high PO2

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