A nurse is reviewing the lab results and electrocardiogram (ECG) of a patient with End Stage Renal Disease (ESRD). The nurse correlates which ECG finding to a potassium level of 6.8?

Prolonged PR interval

Presence of a U wave

Peaked T waves

Elevated ST segment

Answer and Explanation

The Correct Answer is C

A. A prolonged PR interval can be seen in hyperkalemia but is not as characteristic as peaked T waves.
B. A U wave is typically seen in hypokalemia, not hyperkalemia.
C. Peaked T waves are a hallmark ECG finding in hyperkalemia and occur due to increased repolarization speed.
D. ST segment elevation is more commonly associated with myocardial infarction rather than hyperkalemia.

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Free Nursing Study Resources

Correct Answer is A

Explanation

A. A murmur is the expected heart sound in mitral valve regurgitation, caused by the backflow of blood into the left atrium during systole. It is typically a holosystolic murmur heard best at the apex of the heart.
B. S3 and S4 heart sounds may be heard in heart failure but are not specific for mitral regurgitation.
C. A friction rub is associated with pericarditis, not valvular disease.
D. A click is typically heard in mitral valve prolapse, not mitral regurgitation.

A. High-density lipoprotein (HDL) level of 70 mg/dL B. A regular exercise routine C. Taking benazepril D. Obstructive sleep apnea (OSA)

Correct Answer is D

Explanation

A. A high HDL level (above 60 mg/dL) is protective against cardiovascular disease and does not contribute to hypertension.
B. A regular exercise routine is beneficial for cardiovascular health and helps lower blood pressure rather than increasing it.
C. Benazepril is an angiotensin-converting enzyme (ACE) inhibitor used to treat hypertension rather than causing it.
D. Obstructive sleep apnea (OSA) is a known risk factor for hypertension due to intermittent hypoxia and increased sympathetic nervous system activity, which contribute to elevated blood pressure.

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A nurse is reviewing the lab results and electrocardiogram (ECG) of a patient with End Stage Renal Disease (ESRD). The nurse correlates which ECG finding to a potassium level of 6.8?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

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Correct Answer is D

Explanation

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