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 C
Explanation
Choice A rationale:
"Pitting edema of the lower legs.”. Pitting edema is a common sign of congestive heart failure (CHF), and it often occurs bilaterally in the lower extremities. While this is a potential finding in left-sided heart failure, it is not specific to it.
Choice B rationale:
"Jugular venous distention.”. Jugular venous distention (JVD) is more indicative of right-sided heart failure or elevated central venous pressure. It is not a typical finding in left-sided heart failure.
Choice C rationale:
"Shortness of breath while lying down.”. This is a classic symptom of left-sided heart failure, known as orthopnea. When the patient lies flat, fluid that has accumulated in the lungs can lead to difficulty breathing. Patients with left-sided heart failure often find relief by sleeping with their upper body elevated.
Choice D rationale:
"Right upper quadrant pain.”. Right upper quadrant pain is not a typical finding in left-sided heart failure. It may be associated with issues related to the liver or gallbladder but is not directly related to heart failure.
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