A patient is diagnosed with hypokalemia. After reviewing the patient's current medications, which drug should the nurse consider that might have contributed to the patient's health problem?
Narcotic.
Thiazide diuretic.
Corticosteroid.
Muscle relaxer.
The Correct Answer is B
Choice A rationale:
Narcotics are not known to directly cause hypokalemia. Their main effects are related to pain relief and central nervous system depression.
Choice B rationale:
Thiazide diuretics can cause potassium loss in the urine, leading to hypokalemia. These diuretics work by inhibiting sodium reabsorption in the distal convoluted tubule, which can lead to potassium excretion as well.
Choice C rationale:
Corticosteroids can cause sodium and water retention but are not typically associated with significant potassium abnormalities.
Choice D rationale:
Muscle relaxers are not known to cause hypokalemia. They primarily act on the neuromuscular junction and do not directly impact potassium levels.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
PacO2 50 mm Hg. Choice A rationale:
Potassium levels are not directly related to respiratory acidosis. Potassium levels may be affected in certain conditions, but they are not specific indicators of respiratory acidosis.
Choice B rationale:
HCO3- (bicarbonate) levels may be elevated in metabolic alkalosis, not respiratory acidosis. In respiratory acidosis, the primary abnormality is an increased PacO2, not HCO3-.
Choice C rationale:
The partial pressure of carbon dioxide (PacO2) is a key parameter in diagnosing respiratory acidosis. In this case, a PacO2 of 50 mm Hg suggests hypoventilation and an excess of carbon dioxide in the blood, contributing to acidosis.
Choice D rationale:
The pH level given (pH 7.45) is within the normal range, which contradicts the diagnosis of respiratory acidosis. In respiratory acidosis, the pH would be expected to be below the normal range of 7.35-7.45 due to increased carbon dioxide levels.
Correct Answer is B
Explanation
Cerebral bleeding. Choice A rationale:
Stress fractures are not directly related to hypernatremia. Hypernatremia is an electrolyte imbalance, and its main effects are related to cellular dehydration and neurological symptoms rather than bone fractures.
Choice B rationale:
This is the correct answer because hypernatremia can lead to severe dehydration and cause neurological complications, including cerebral bleeding. The brain cells can shrink due to water loss, causing blood vessels to rupture, leading to bleeding in the brain.
Choice C rationale:
Atrial dysrhythmias are not directly associated with hypernatremia. Hypernatremia primarily affects the central nervous system and can lead to neurological symptoms rather than cardiac dysrhythmias.
Choice D rationale:
Pulmonary edema is not a likely consequence of hypernatremia. Pulmonary edema is associated with fluid volume excess, not fluid volume deficit, which is characteristic of hypernatremia.
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