A nurse is caring for a client who is ordered Potassium 40 mEq IV. On hand is Potassium Chloride 20 mEq/mL. What is the nurse’s next action?

Mix potassium in 1 liter of normal saline.

Call the physician for order clarification.

Prepare 20 mEq of Potassium to give IV push.

Give the medication as ordered.

Answer and Explanation

The Correct Answer is B

A. While potassium is typically diluted in IV fluids, the concentration and infusion rate must be clarified before administration. A standard dilution is 10 mEq in 100 mL or 40 mEq in 1L, but this must be verified.
B. Calling the physician for clarification is the safest step. IV potassium should never be given undiluted or as an IV push due to the risk of fatal cardiac arrhythmias.
C. IV push potassium is never appropriate as it can cause cardiac arrest.
D. Administering the undiluted 20 mEq/mL solution is dangerous and requires proper dilution before administration.

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Correct Answer is C

Explanation

A. Hypernatremia is incorrect. Furosemide can cause hyponatremia rather than hypernatremia due to increased sodium excretion.
B. Hypocalcemia is incorrect. While loop diuretics can cause some calcium loss, hypocalcemia is less common than hypokalemia.
C. Hypokalemia is correct. Furosemide is a loop diuretic that increases potassium excretion, leading to a risk of hypokalemia, which can cause muscle weakness, arrhythmias, and other complications.
D. Hyperkalemia is incorrect. Furosemide promotes potassium excretion, making hyperkalemia unlikely.

A. Atrial Fibrillation B. Junctional Rhythm C. First Degree Heart Block D. Sinus Tachycardia

Correct Answer is A

Explanation

A. Atrial fibrillation is characterized by an irregularly irregular rhythm with no distinct P waves on the ECG. Instead, there are fibrillatory waves due to chaotic atrial activity, and the ventricular rate may be rapid or controlled.
B. Junctional rhythm originates from the AV node and is typically characterized by absent or inverted P waves, a narrow QRS complex, and a regular rhythm.
C. First-degree heart block presents with a prolonged PR interval (>0.20 seconds) but has a regular rhythm and identifiable P waves preceding each QRS complex.
D. Sinus tachycardia is a regular rhythm with a heart rate greater than 100 beats per minute, with distinct P waves before each QRS complex.

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A nurse is caring for a client who is ordered Potassium 40 mEq IV. On hand is Potassium Chloride 20 mEq/mL. What is the nurse’s next action?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is caring for a client with heart failure who takes furosemide (Lasix) 20 mg daily at home and is receiving 40 mg of furosemide (Lasix) IV daily in the hospital. The nurse is aware that this patient is at risk for which electrolyte imbalance?

Correct Answer is C

Explanation

Identify the following Cardiac Rhythm:

Correct Answer is A

Explanation

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