NCLEX Practice Questions PN Related

Review NCLEX Practice Questions PN related questions and content

A client with a pyloric obstruction is admitted to the hospital with vomiting. Which of the following blood gases would the nurse expect to see in the client with vomiting?

  • A. $\mathrm{pH} 7.33, \mathrm{PCO}_2 30 \mathrm{~mm} \mathrm{Hg}$
  • B. $\mathrm{pH} 7.50, \mathrm{PCO}_2 32 \mathrm{~mm} \mathrm{Hg}$
  • C. $\mathrm{pH} 7.30, \mathrm{PCO}_2 50 \mathrm{~mm} \mathrm{Hg$
  • D. $\mathrm{pH} 7.47, \mathrm{PCO}_2 40 \mathrm{~mm} \mathrm{Hg}$
Correct Answer: B

Rationale: Vomiting causes loss of hydrochloric acid, leading to metabolic alkalosis, indicated by a high pH (7.50) and normal to low PCO2.