A falling blood pH and a rising concentration of c

ATI LPN

ATI LPN Test Bank

A falling blood pH and a rising concentration of carbon dioxide due to emphysema, indicate

A. metabolic acidosis B. metabolic alkalosis C. respiratory acidosis D. respiratory alkalosis

Correct Answer: C

Rationale: Emphysema impairs CO₂ excretion, causing respiratory acidosis.

prolonged diarrhea resulting in excessive loss of bicarbonate

A. respiratory acidosis B. respiratory alkalosis C. metabolic acidosis D. metabolic alkalosis

Correct Answer: C

Rationale: Bicarbonate loss in diarrhea leads to metabolic acidosis.

Normal plasma pH is

A. 7 B. 7.4 C. 7.6 D. 7.8

Correct Answer: B

Rationale: Normal plasma pH is 7.4, maintained by buffers and compensation.

A loss of which type of body secretion is most likely to result in metabolic alkalosis?

A. Gastric B. Sweat C. Intestinal D. Salivary

Correct Answer: A

Rationale: Gastric loss (e.g., vomiting) removes H⁺, causing metabolic alkalosis.

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