What set of arterial blood gases (ABGs) would you expect to see in a client with acute chest trauma?
pH 7.53, CO2 32, HCO3 24
pH 7.30, CO2 52, HCO3 22
pH 7.49, CO2 30, HCO3 14
pH 7.26, CO2 45, HCO3 18
The Correct Answer is B
Choice A reason: pH 7.53 and low CO2 (32) indicate respiratory alkalosis from hyperventilation, not typical in chest trauma where breathing is impaired. HCO3 (24) is normal, showing no compensation yet, misaligning with trauma physiology.
Choice B reason: pH 7.30, high CO2 (52), and near-normal HCO3 (22) reflect respiratory acidosis from hypoventilation in chest trauma, like rib fractures, reducing air exchange. Compensation is minimal acutely, fitting the clinical scenario.
Choice C reason: pH 7.49 and low CO2 (30) suggest respiratory alkalosis, while low HCO3 (14) indicates metabolic compensation. This doesn’t match chest trauma’s ventilatory restriction, which elevates CO2 instead.
Choice D reason: pH 7.26, CO2 (45), and low HCO3 (18) show mixed acidosis. Chest trauma primarily causes respiratory acidosis from CO2 retention, not a significant metabolic drop acutely, making this less precise.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Myxedema, severe hypothyroidism, slows metabolism, reducing cardiac output and causing fluid retention in tissues, leading to non-pitting leg edema from glycosaminoglycan deposits and poor circulation.
Choice B reason: Heat intolerance occurs in hyperthyroidism due to increased metabolism raising body temperature. Myxedema causes cold intolerance from slowed metabolism, making this finding unlikely.
Choice C reason: Tachycardia is a hyperthyroid symptom from excess thyroid hormone speeding heart rate. Myxedema leads to bradycardia as metabolism and cardiac activity decrease significantly.
Choice D reason: Diarrhea aligns with hyperthyroidism’s accelerated gut motility. Myxedema causes constipation from slowed metabolism reducing peristalsis, so diarrhea contradicts this condition’s physiology.
Correct Answer is B
Explanation
Choice A reason: Dressing involves both sides but can be adapted with the left hand; right-sided CVA impairs left-side function, less affecting dominant right-hand tasks.
Choice B reason: Writing, a fine motor skill, relies on the dominant right hand, controlled by the left brain; right-sided CVA disrupts this, making it most difficult.
Choice C reason: Combing hair uses gross motor skills, manageable with the left hand despite right-sided CVA’s left-sided weakness, less challenging than writing.
Choice D reason: Eating uses the right hand but can be adjusted with utensils or left-hand assistance; it’s less precise than writing, so less impacted.
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