What is the normal range of serum potassium level in adults?

3.5 to 5.0 mEq/L

8.5 to 10.5 mg/dL

135 to 145 mEq/L

1.8 to 2.6 mEq/L

Answer and Explanation

The Correct Answer is A

Choice A reason: This is correct because 3.5 to 5.0 mEq/L is the normal range of serum potassium level in adults. Potassium is an electrolyte that is important for nerve and muscle function, as well as acid-base balance.

Choice B reason: This is incorrect because 8.5 to 10.5 mg/dL is the normal range of serum calcium level in adults, not potassium. Calcium is an electrolyte that is involved in bone health, muscle contraction, and blood clotting.

Choice C reason: This is incorrect because 135 to 145 mEq/L is the normal range of serum sodium level in adults, not potassium. Sodium is an electrolyte that is essential for fluid balance, nerve transmission, and muscle contraction.

Choice D reason: This is incorrect because 1.8 to 2.6 mEq/L is the normal range of serum magnesium level in adults, not potassium. Magnesium is an electrolyte that is important for muscle and nerve function, as well as enzyme activity.

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Correct Answer is A

Explanation

Choice A reason: This is correct because respiratory acidosis is a condition where the blood pH is lower than the normal range of 7.35 to 7.45, due to impaired gas exchange or hypoventilation, which causes carbon dioxide to accumulate in the blood. COPD is a chronic lung disease that obstructs the airways and reduces the oxygen intake and carbon dioxide output. This leads to respiratory acidosis in the patient.

Choice B reason: This is incorrect because respiratory alkalosis is a condition where the blood pH is higher than the normal range of 7.35 to 7.45, due to hyperventilation, which lowers the carbon dioxide in the blood. COPD does not cause hyperventilation, but rather hypoventilation.

Choice C reason: This is incorrect because metabolic alkalosis is a condition where the blood pH is higher than the normal range of 7.35 to 7.45, due to a loss of acids or an excess of bases in the body. COPD does not affect the metabolic system directly, but rather the respiratory system.

Choice D reason: This is incorrect because metabolic acidosis is a condition where the blood pH is lower than the normal range of 7.35 to 7.45, due to an excess of acids or a loss of bases in the body. COPD does not affect the metabolic system directly, but rather the respiratory system.

A. Acidosis B. Equal bicarbonate C. Neutral carbonic acid D. Alkalosis

Correct Answer is A

Explanation

Choice A reason: This is correct because acidosis is a condition where the serum pH is lower than the normal range of 7.35 to 7.45. Acidosis can be caused by an excess of acids or a loss of bases in the body, which can affect the function of various organs and systems.

Choice B reason: This is incorrect because equal bicarbonate is not a condition, but a term that describes the balance between bicarbonate (HCO3-) and carbonic acid (H2CO3) in the blood. Bicarbonate is a base that buffers the acids in the blood and maintains the pH. Equal bicarbonate means that the ratio of bicarbonate to carbonic acid is 20:1, which is the normal value.

Choice C reason: This is incorrect because neutral carbonic acid is not a condition, but a term that describes the pH of carbonic acid (H2CO3) in the blood. Carbonic acid is an acid that forms when carbon dioxide (CO2) dissolves in water. Neutral carbonic acid means that the pH of carbonic acid is 7.0, which is neither acidic nor basic.

Choice D reason: This is incorrect because alkalosis is a condition where the serum pH is higher than the normal range of 7.35 to 7.45. Alkalosis can be caused by a loss of acids or an excess of bases in the body, which can affect the function of various organs and systems.

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What is the normal range of serum potassium level in adults?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

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Correct Answer is A

Explanation

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