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Exam NCLEX-PN topic 2 question 79 discussion

Actual exam question from Test Prep's NCLEX-PN
Question #: 79
Topic #: 2
[All NCLEX-PN Questions]

A client goes to the Emergency Department with acute respiratory distress and the following arterial blood gases (ABGs): pH 7.35, PCO2 40 mmHg, PO2
63mmHg, HCO3 23, and oxygenation saturation ( SaO2) 93%. Which of the following represents the best analysis of the etiology of these ABGs?

  • A. tuberculosis (TB)
  • B. pneumonia
  • C. pleural effusion
  • D. hypoxia
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Suggested Answer: D 🗳️
A combined low PO2 and lowSaO2 indicates hypoxia. The pH, PCO2, and HCO3 are normal. ABGs are not necessarily altered in TB or pleural effusion.
Depending on the degree of the pneumonia, the PO2 and PCO2 might be low because hypoxia stimulates hyperventilation. Physiological Adaptation
by [deleted] at March 10, 2025, 5:24 a.m.

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