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Acid-base balance of the blood Mr. Un. Metabalki was brought to the ER. His arterial blood results...

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Medical Sciences

Acid-base balance of the blood

Mr. Un. Metabalki was brought to the ER. His arterial bloodresults contained the following: pH = 7.54, pCO2=40 mmHg, HCO3 -=34 mEq/L.

Mrs. I. Donno entered ER comatose and with shallow infrequentbreaths. Her friend said she might have taken an overdose of anarcotic drug. Her arterial blood values were: pH = 7.18, pCO2=80mmHg, HCO3 - =31 mEq/L.

It has been a busy day, but your shift is nearly over. It lookslike your last patient will be Norman O’Normally. His arterialblood results are: pH = 7.38, pCO2=33 mmHg, HCO3 - =19 mEq/L.

Oops! One more patient’s lab results were found at the bottom ofthe pile. Before you go home, interpret her arterial blood data: pH= 7.43, pCO2=32 mmHg, HCO3 - =20 mEq/L

Answer & Explanation Solved by verified expert
4.2 Ratings (586 Votes)
Steps in identification of the acidbase disorder are Identify validity of the ABG See the pH and identify acidic of alkaline Check the pCO2 and HCO3 values if pH is low acidic pCO2 high respiratory acidosis HCO3 low metabolic acidosis If the pH is high alkalosis pCO2 low respiratory alkalosis HCO3 high Metabolic alkalosis determine the compensatory complete or incomplete example 1 pH 754 pCO2 40 mmHg HCO3 34 meql Step 1 validity Calculate the H ion can compare with the pH H 24 pCO2 HCO3 24 40 34 28 The pH 754 represent approximately 80 54 last two digits of the pH 26 H ion This value is similar to the value we calculated 28 therefore this ABG is valid Step 2 pH 754 normal pH 735 745 this pH is higher than normal therefore This is alkaline Step 3 lets see the pCO2 and HCO3 In metabolic alkalosis the HCO3 and pH both are high both move in the same direction In respiratory alkalosis the pCO2 is low and pH is high they move in the    See Answer
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