2. The following chart shows the normal range of ABG values and those obtained f

Question

2. The following chart shows the normal range of ABG values and those obtained for a patient, Mark. Normal range Marks's results pH pco2 (mmHg) 38-52 pCO2 (mM) 20-27 po2 (mmHg) 70-100 HCO3-(mM) 19-25 7.31 18.1 9.5 121.0 8.9 7.35-7.45 a) Diagnose the type of acid-base disorder in the patient What is the basis for your decision? b) What type of compensation is occurring? (you do not have to indicate if it is equal to the predicted compensation) c For each treatment listed below, indicate if you recommend it to correct Mark's disorder and why (explain the effect each treatment would have on his blood pH) i) Rebreathing in a paper bag i) An i.vcontaining an isotonic solution of HCO3-

Explanation / Answer

2 a ) Metabolic acidosis

Decision

Reduced blood pH- confirms Acidosis

Reduced bicarbonate and

Reduced carbon dioxide- confirms Metabolic Acidosis

b.Hyperventilation is the compensation for the metabolic acidosis in order to decrease the arterial pCO

c. i. Re-breathing of expelled carbon dioxide, increases blood carbon dioxide and decreases blood pH.

Respiratory alkalosis can be treated by making hyperventilating person to breathe into a paper bag.

ii. Correction with infusion HCO3- can be considered due to loss of bicarbonate ions metabolic acidosis with impending respiratory failure.

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