A nurse is collecting a medication history from a client who is scheduled to have a cardiac catheterization. Which of the following medications taken by the client interacts with contrast material and places the client at risk for acute kidney injury?

Choice a) is incorrect because morphine sulfate is an appropriate prescription for a client who has acute heart failure following MI. Morphine sulfate is an opioid analgesic that can relieve pain, anxiety, and dyspnea. Morphine sulfate can also reduce the preload and afterload of the heart, which can improve the cardiac output and oxygenation.

Choice b) is incorrect because laboratory testing of serum potassium is an appropriate prescription for a client who has acute heart failure following MI. Serum potassium is an electrolyte that is important for the normal function of the cardiac cells and muscles. Serum potassium can be altered by various factors, such as renal function, acid-base balance, medications, or dietary intake. Serum potassium can affect the cardiac rhythm and contractility, which can influence the outcome of the client.

Choice c) is correct because 0.9% normal saline IV at 50 mL/hr continuous is a prescription that requires clarification for a client who has acute heart failure following MI. 0.9% normal saline is an isotonic solution that can maintain the fluid balance and blood pressure in the body. However, 0.9% normal saline can also cause fluid overload and worsen the heart failure symptoms, such as edema, crackles, and dyspnea. The nurse should clarify with the provider if this prescription is appropriate for the client's condition and if there are any parameters or limits for the fluid administration.

Choice d) is incorrect because bumetanide 1 mg IV bolus every 12 hr is an appropriate prescription for a client who has acute heart failure following MI. Bumetanide is a loop diuretic that can increase the urine output and reduce the fluid volume and pressure in the body. Bumetanide can also decrease the preload and afterload of the heart, which can improve the cardiac output and oxygenation.

Choice A Reason: This is incorrect. Sinus bradycardia is a slow and regular heart rate that originates from the sinus node. It does not cause irregular palpitations, fatigue, or dizziness, unless the heart rate is very low or the client has underlying cardiac disease.

Choice B reason: This is incorrect. Sinus tachycardia is a fast and regular heart rate that originates from the sinus node. It may cause fatigue or dizziness, but not irregular palpitations or pulse deficit.

Choice C Reason: This is correct. Atrial fibrillation is a fast and irregular heart rate that originates from multiple foci in the atria. It causes irregular palpitations, fatigue, dizziness, and pulse deficit due to ineffective atrial contractions and variable ventricular response.

Choice D Reason: This is incorrect. First-degree AV block is a delay in the conduction of impulses from the atria to the ventricles. It does not affect the heart rate or rhythm, and does not cause any symptoms.