A nurse is caring for a client who came to the emergency department reporting chest pain. The provider suspects a myocardial infarction. While waiting for the troponin levels report, the client asks what this blood test will show.
Which of the following explanations should the nurse provide to the client?

Choice a) is incorrect because elevating the client’s feet is not the priority action for a hypotensive client. Elevating the client’s feet may help increase the venous return to the heart, but it may also compromise the respiratory status of a client who has esophageal varices and is at risk of aspiration.

Choice b) is incorrect because administering a unit of packed RBCs is not the priority action for a hypotensive client. Administering a unit of packed RBCs may help increase the oxygen-carrying capacity of the blood, but it may also increase the blood viscosity and pressure, which can worsen the bleeding from the esophageal varices.

Choice c) is incorrect because initiating a dopamine IV infusion for the client is not the priority action for a hypotensive client. Initiating a dopamine IV infusion may help increase the blood pressure and cardiac output, but it may also cause vasoconstriction and tachycardia, which can increase the risk of hemorrhage and arrhythmias.

Choice d) is correct because increasing the client’s IV fluid rate is the priority action for a hypotensive client. Increasing the client’s IV fluid rate may help restore the intravascular volume and perfusion, which can prevent shock and organ damage. Increasing the client’s IV fluid rate may also dilute the blood and reduce its viscosity and pressure, which can decrease the bleeding from the esophageal varices.

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.