This question-specific review guide is tied to the answer reasoning for a PracticeTestVault item. Use it after you answer the question so the review stays focused on what the prompt actually tested.
What this question is testing
Objective: Recognize manifestations of hypokalemia
Prompt focus: A nurse is reviewing the laboratory results of a client taking a loop diuretic and notes a potassium level of 2.9 milliequivalents per liter. Which finding should the nurse expect?
Why the correct answer works
Muscle weakness and a flattened T wave on the electrocardiogram
Correct. Hypokalemia causes muscle weakness and a flattened T wave on the electrocardiogram.
Why the tempting wrong answer fails
Incorrect. Hyperactive reflexes and tetany are associated with hypocalcemia.
Plain-language takeaway
Loop diuretics increase potassium excretion. Low potassium affects muscle and cardiac function, producing weakness and characteristic electrocardiogram changes.
Simple analogy
Think of recognize manifestations of hypokalemia like following a short checklist: identify the clue, confirm the rule, and then make the move that fits this exact scenario.
How to review it before a retake
- Underline the command word and name what the question is asking before rereading the choices.
- Compare the correct answer against the closest distractor and write the exact detail that separates them.
- Retest this objective with a fresh question without looking at the rationale first.