The nurse is teaching a group of staff nurses about cardiac rhythms. The nurse would indicate that a U wave may indicate which of the following?

Hypokalemia

Hypercalcemia

Hyponatremia

Hyperkalemia

Answer and Explanation

The Correct Answer is A

A. Hypokalemia: U waves are often seen on an electrocardiogram in clients with hypokalemia. They represent delayed repolarization of the Purkinje fibers due to low potassium levels.

B. Hypercalcemia: Hypercalcemia affects the QT interval, typically shortening it, but it does not cause U waves.

C. Hyponatremia: Electrocardiographic changes are not commonly associated with hyponatremia.

D. Hyperkalemia: Hyperkalemia causes peaked T waves, prolonged PR intervals, and wide QRS complexes, not U waves.

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Correct Answer is C

Explanation

A. Deficits in the right visual field: This would be associated with a left-sided stroke, as the right hemisphere controls the left visual field.

B. Motor retardation: This is not a specific sign of right hemisphere stroke. It might be seen with other types of strokes.

C. Poor impulse control: A right hemisphere stroke may cause behavioral changes, including impulsivity, poor judgment, and difficulty in regulating emotions.

D. Unable to discriminate words and letters: This would suggest aphasia, which is typically associated with left hemisphere damage, as the left hemisphere controls language.

A. Hypothermia B. Calcium channel blockers medications C. Athletic conditioning D. Beta-blocker medications E. Hyperthyroidism

Correct Answer is ["A","B","C","D"]

Explanation

A. Hypothermia: Hypothermia can slow the heart rate, leading to bradycardia.

B. Calcium channel blockers medications: These medications can slow the conduction through the AV node, causing bradycardia.

C. Athletic conditioning: Athletes often have a lower resting heart rate due to increased parasympathetic tone, which can lead to sinus bradycardia.

D. Beta-blocker medications: Beta-blockers decrease heart rate by blocking the effects of adrenaline on the heart.

E. Hyperthyroidism: Hyperthyroidism usually leads to tachycardia, not bradycardia, due to increased metabolism.

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The nurse is teaching a group of staff nurses about cardiac rhythms. The nurse would indicate that a U wave may indicate which of the following?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a client who had a stroke involving the right cerebral hemisphere. The nurse should monitor the client for which finding?

Correct Answer is C

Explanation

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Correct Answer is ["A","B","C","D"]

Explanation

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