Hypokalemia is often associated with which one of the following conditions?
Metabolic acidosis
Metabolic alkalosis
Hyperchloremia
None of the above
The Correct Answer is B
A. Metabolic acidosis is characterized by a low pH and a decrease in bicarbonate, but it is not typically associated with hypokalemia. In fact, acidosis may cause potassium to shift out of cells, increasing serum potassium levels.
B. Metabolic alkalosis is often associated with hypokalemia because the body compensates for alkalosis by shifting potassium into cells, leading to a lower serum potassium level. This is commonly seen with conditions like vomiting or the overuse of diuretics.
C. Hyperchloremia refers to elevated chloride levels, which may be associated with metabolic acidosis, but it is not directly linked to hypokalemia.
D. "None of the above" is incorrect because metabolic alkalosis is a known condition associated with hypokalemia.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. While status asthmaticus is a severe, life-threatening asthma exacerbation, the first step is to stabilize the patient by improving oxygenation and relieving airway obstruction, not immediately calling 911 unless the situation worsens.
B. Intubation is not the first step unless the patient's respiratory status continues to deteriorate despite initial interventions. The focus should be on improving oxygenation and managing the airway.
C. Establishing IV access and administering emergency medications, such as corticosteroids or bronchodilators, may be necessary, but the first priority is to improve the patient's breathing and oxygenation.
D. Placing the patient in a high Fowler's position helps to open the airways and facilitate breathing. Starting oxygen therapy is essential to support oxygenation in a patient with labored breathing. This should be the first intervention.
Correct Answer is A
Explanation
A. Arterial blood gas (ABG) analysis is the most accurate method for distinguishing between hypoxemia (low oxygen levels in the blood) and hypercapnia (elevated carbon dioxide levels). ABG testing measures both the partial pressure of oxygen (PaO2) and carbon dioxide (PaCO2), providing a clear distinction between the two conditions.
B. While observing for signs and symptoms is useful, it is not specific enough to distinguish between hypoxemia and hypercapnia, as both conditions may present with similar symptoms like shortness of breath or confusion.
C. Measuring oxygen saturation with a pulse oximeter can detect hypoxemia but does not provide information about carbon dioxide levels, so it cannot distinguish between hypoxemia and hypercapnia.
D. Pulmonary function testing assesses lung volumes and airflow but does not directly measure oxygen or carbon dioxide levels, making it less effective for distinguishing between hypoxemia and hypercapnia.
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