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Old 01-19-2013
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Question Acidosis; What's your answer?

A 32 yr man unconscious after sedative overdose. PR 90, RR 6/min, BP 80/40, ABG - pH 6.8, pCo2 80, PO2 40, HCO 12
A metabolic acidosis with respiratory compensation
B Respiratory acidosis and metabolic acidosis
C Respiratory acidosis with metabolic compensation
D Uncompensated metabolic acidosis
E Uncomopensated respiratory acidosis

I think the answer is E. but its wrong? Anyone could explain about it?
Thank you
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Old 01-19-2013
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How do we differentiate between mixed acidosis and resp or meta acidosis with compensation? Because sometimes I found lab value are margin and hard to make sharp decision. Is there any cutoff point for this?

Last edited by shwetha99; 01-19-2013 at 01:28 PM.
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Old 01-19-2013
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although i concluded its a mixed disorder still i m unable to figure out wat caused
met.acidosis ; where did u see this Q , i m assuming that its acute alchohol toxicification
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Old 01-19-2013
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Hco3 is decreased and ph is abnormal so i think thee is no compensation. I'd pick E
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Old 01-20-2013
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B) Respiratory acidosis and metabolic acidosis

It's clear from the pH value== Acidemia
PCO2== 80 mm Hg and HCO3== 12 meq/L which indicates that it's a complex acid base disorder.
Acute respiratory acidosis:
1 mm Hg of CO2 increase = 0.1 meq/L of increase in HCO3
Instead here HCO3 level is decreased indicating co-existing metabolic acidosis.

A-a gradient = 50 mm Hg which is also increased here indicating existence of respiratory pathology>>>Respiratory acidosis.

I think it's due to Acute Alcoholic overdose resulting (Respiratory acidosis+Metabolic acidosis) from formic acid formation due to methanol ingestion.

Last edited by Master shifu; 01-20-2013 at 01:10 AM.
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Old 01-20-2013
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Quote:
Originally Posted by slacker.mle View Post
Hco3 is decreadedand ph is abnormal so i think thee is no compensaton. I'd pick E
E is wrong
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Old 01-21-2013
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Quote:
Originally Posted by Master shifu View Post
B) Respiratory acidosis and metabolic acidosis
this same condition can also occur in cardiorespiratory arrest.....respiratory acidosis and metabolic acidosis
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