Which electrolyte imbalance is most likely indicated by a peaked T wave on an ECG?

Hyperkalemia

Hypocalcemia

Hyponatremia

Hypomagnesemia

Answer and Explanation

The Correct Answer is A

Rationale:
A tall, peaked T wave on an ECG is a classic sign of elevated potassium levels, which can progress to life-threatening arrhythmias if untreated.
B. Hypocalcemia is incorrect; it is associated with prolonged QT intervals and tetany, not peaked T waves.
C. Hyponatremia is incorrect; it typically causes neurologic symptoms (confusion, seizures) rather than characteristic ECG changes.
D. Hypomagnesemia is incorrect; it can cause prolonged QT and torsades de pointes, but not peaked T waves.

Nursing Test Bank

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Correct Answer is C

Explanation

Rationale:
A. Baked potato is low in sodium if prepared without added salt, making it safe for a client on a diuretic.
B. Milkshake is generally safe unless it contains added sodium; in most cases, it is allowed.
C. Ham is high in sodium, which is contraindicated for a client taking bumetanide, a loop diuretic, as high sodium intake can counteract the diuretic effect and worsen fluid retention.
D. Stewed tomatoes can be included if unsalted; they are generally safe in moderation.

A. Consuming large meals to increase calorie intake B. Starting with clear liquids and progressing to a regular diet C. Skipping meals to reduce nausea D. Eating fatty foods to provide energy E. Chewing gum to stimulate gastric secretions F. Ensuring adequate hydration G. Avoiding NSAIDs for 10 days following the procedure

Correct Answer is ["B","E","F"]

Explanation

Rationale:

A. Large meals can increase nausea and discomfort postoperatively. Small, frequent meals are recommended.

B. Gradually advancing from clear liquids to solid foods helps prevent nausea, vomiting, and gastrointestinal complications while allowing the digestive system to adjust.

C. Skipping meals can lead to malnutrition and delayed recovery.

D. High-fat foods are harder to digest and can exacerbate nausea and abdominal discomfort.

E. Gum chewing promotes bowel motility and can reduce the risk of postoperative ileus.

F. Maintaining fluid balance prevents constipation, dehydration, and electrolyte imbalances, supporting recovery.

G. While this may be important depending on the surgical site, it is not a dietary strategy.

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Which electrolyte imbalance is most likely indicated by a peaked T wave on an ECG?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who has cirrhosis and has a prescription for bumetanide. When delivering the client's lunch tray, which of the following items should the nurse identify as contraindicated for the client?

Correct Answer is C

Explanation

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Correct Answer is ["B","E","F"]

Explanation

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