A nurse is reviewing the laboratory results of a client who is taking a loop diuretic and notes the client's potassium level is 3.0 mEq/L. Which of the following physiological responses should the nurse expect related to the client's hypokalemia?
Hypoglycemia.
Cardiac dysrhythmias.
Increased appetite.
Hyperreflexia.
The Correct Answer is B
Choice A rationale:
Hypoglycemia Hypokalemia (low potassium levels) is not typically associated with hypoglycemia (low blood sugar). Hypokalemia primarily affects the function of muscles and nerves, and it does not directly influence blood glucose levels.
Choice B rationale:
Cardiac dysrhythmias Hypokalemia can lead to cardiac dysrhythmias. Potassium plays a crucial role in maintaining the electrical activity of the heart, and low potassium levels can disrupt normal cardiac rhythms, potentially leading to life-threatening arrhythmias. Cardiac dysrhythmias are a well-recognized complication of severe hypokalemia, making this choice the correct one.
Choice C rationale:
Increased appetite Hypokalemia is not associated with an increased appetite. In fact, it can lead to gastrointestinal disturbances, such as nausea, vomiting, and abdominal pain, which may decrease appetite. The primary manifestations of hypokalemia are related to muscle weakness and cardiac abnormalities.
Choice D rationale:
Hyperreflexia Hyperreflexia (excessive reflex responses) is not a typical manifestation of hypokalemia. Hypokalemia is more commonly associated with muscle weakness, cramps, and cardiac disturbances. Hyperreflexia is often seen in conditions of excessive calcium levels (hypercalcemia) or neurological disorders, not hypokalemia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale:
Metabolic alkalosis Metabolic alkalosis is characterized by an elevated pH (above the normal range of 7.35-7.45) and an increased bicarbonate (HCO3) level (above the normal range of 22-28 mEq/L). In this case, the client's pH of 7.6 and HCO3 level of 32 mEq/L indicate a primary metabolic alkalosis. It can be caused by excessive bicarbonate intake, loss of acid (as in vomiting or excessive diuretic use), or other factors that result in an excess of bicarbonate in the body. The PaCO2 level is within the normal range (35-45 mm Hg), which is consistent with compensatory hypoventilation seen in metabolic alkalosis.
Choice B rationale:
Metabolic acidosis Metabolic acidosis is characterized by a decreased pH and bicarbonate level. The client's ABG results do not align with metabolic acidosis. In this case, the pH is elevated, and the bicarbonate level is above the normal range.
Choice C rationale:
Respiratory alkalosis Respiratory alkalosis is characterized by an elevated pH and decreased PaCO2. The client's ABG results show a normal PaCO2 of 40 mm Hg, which does not align with respiratory alkalosis. In respiratory alkalosis, you would typically see a lower PaCO2.
Choice D rationale:
Respiratory acidosis Respiratory acidosis is characterized by a decreased pH and elevated PaCO2. The client's ABG results do not align with respiratory acidosis. In this case, the PaCO2 is within the normal range, and the pH is elevated, which is not indicative of respiratory acidosis.
Correct Answer is D
Explanation
Choice A rationale:
Cool, clammy skin is not a typical manifestation of hypernatremia (high sodium levels). Hypernatremia is characterized by an excess of sodium in the blood, which typically leads to symptoms such as thirst, dry mucous membranes, and decreased skin turgor. Cool, clammy skin is more often associated with conditions like shock or hypoglycemia.
Choice B rationale:
Increased salivation is not a common manifestation of hypernatremia. Instead, hypernatremia often leads to signs of dehydration, including dry mouth and decreased salivation.
Choice C rationale:
Hypertension is not a direct manifestation of hypernatremia. Hypernatremia can cause increased blood pressure, but it is not one of the typical clinical signs of hypernatremia. Hypertension is more commonly associated with conditions like high sodium intake, kidney disease, or primary hypertension.
Choice D rationale:
A decreased level of consciousness is a significant manifestation of hypernatremia. Elevated sodium levels in the blood can lead to cellular dehydration, affecting brain cells and resulting in neurological symptoms such as confusion, lethargy, and decreased consciousness. Severe hypernatremia can even lead to seizures and coma. .
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