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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Avoiding sick contacts is generally a good practice, but it is not the primary concern for a client with infective endocarditis. The focus is on preventing bacterial infections that could enter the bloodstream and affect the heart valves.
B. Prophylactic antibiotics are required before dental and invasive procedures to prevent bacterial endocarditis recurrence. The bacteria that cause infective endocarditis can enter the bloodstream through procedures that involve mucosal surfaces.
C. Discontinuing antibiotics when feeling better is incorrect. Infective endocarditis requires a full course of IV antibiotics, often lasting 4 to 6 weeks, to fully eradicate the infection and prevent complications.
D. Avoiding physical activity for six months is unnecessary unless the client has severe cardiac complications. However, clients should monitor for symptoms such as fatigue and consult their provider before engaging in strenuous activities.
Correct Answer is D
Explanation
A. Hyperkalemia is not a typical complication of thiazide diuretics. Instead, they promote potassium loss, increasing the risk of hypokalemia.
B. Hypoglycemia is not directly associated with thiazide diuretics. These medications may affect glucose tolerance but do not cause low blood sugar.
C. Seizures are not a common adverse effect of thiazide diuretics. While severe electrolyte imbalances could contribute to neurological symptoms, they are not the primary concern in this scenario.
D. Cardiac dysrhythmias can result from hypokalemia, a common side effect of thiazide diuretics. Potassium is essential for normal cardiac conduction, and low levels can lead to palpitations, weakness, and potentially life-threatening arrhythmias.
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