Nursing Elites

1. A patient is prescribed medroxyprogesterone acetate (Provera) for the treatment of endometriosis. What should the nurse include in the patient teaching?

• A. Take the medication with food to prevent nausea.
• B. Take the medication at the same time each day to maintain consistent hormone levels.
• C. Avoid prolonged sun exposure while taking this medication.
• D. Discontinue the medication if side effects occur.

Correct answer: B

Rationale: The correct answer is to take the medication at the same time each day to maintain consistent hormone levels and effectiveness. This is crucial for the drug to work optimally. Choice A is incorrect because medroxyprogesterone acetate does not necessarily need to be taken with food to prevent nausea. Choice C is not directly related to the medication's administration and is not a common teaching point for this drug. Choice D is incorrect as discontinuing the medication abruptly can lead to adverse effects and is not recommended without consulting a healthcare provider.

2. In a patient with chronic kidney disease and a hemoglobin level of 9 g/dL, which of the following treatments is most appropriate?

• A. Iron supplementation
• B. Erythropoiesis-stimulating agents
• C. Blood transfusion
• D. Vitamin B12 supplementation

Correct answer: B

Rationale: In chronic kidney disease, anemia commonly occurs due to decreased erythropoietin production. Erythropoiesis-stimulating agents, such as erythropoietin or darbepoetin, are the mainstay of treatment to stimulate red blood cell production. Iron supplementation is more appropriate for iron-deficiency anemia, not the anemia of chronic kidney disease. Blood transfusion is reserved for severe cases or acute blood loss. Vitamin B12 supplementation is indicated for megaloblastic anemia caused by vitamin B12 deficiency, not specifically in chronic kidney disease-related anemia.

3. A patient has been prescribed mifepristone (RU-486) to terminate a pregnancy. How does this drug achieve its therapeutic effect?

• A. By inhibiting the action of progesterone, which is necessary to maintain pregnancy.
• B. By increasing estrogen levels, which induce uterine contractions.
• C. By altering the uterine lining, preventing implantation.
• D. By stimulating uterine contractions, which expel the embryo.

Correct answer: A

Rationale: Mifepristone (RU-486) functions by inhibiting the action of progesterone, a hormone crucial for maintaining pregnancy. By blocking progesterone, mifepristone disrupts the uterine environment necessary for pregnancy continuation, ultimately leading to termination. Choice B is incorrect because mifepristone does not increase estrogen levels; instead, it acts on progesterone. Choice C is incorrect as mifepristone's mechanism does not involve altering the uterine lining to prevent implantation. Choice D is incorrect because mifepristone does not directly stimulate uterine contractions; its primary action is through progesterone inhibition.

4. When educating a client about to undergo a pacemaker insertion, the nurse explains the normal phases of cardiac muscle tissue. During the repolarization phase, the nurse will stress that membranes must be repolarized before they can be re-excited. Within the cell, the nurse understands that:

• A. Potassium channels open while sodium channels close, causing repolarization to the resting state.
• B. The influx of calcium is the primary stimulus for the repolarization of cardiac tissue.
• C. Only the electrical activity within the heart will determine when repolarization occurs.
• D. The cell membranes need to stay calm, resulting in muscle tissue becoming refractory.

Correct answer: A

Rationale: During the repolarization phase of cardiac muscle tissue, potassium channels open while sodium channels close. This process is crucial for the cardiac muscle to return to its resting state after depolarization. Potassium moving out of the cell and sodium staying out helps reset the membrane potential and prepare the cell for the next depolarization phase. The influx of calcium is not the primary stimulus for repolarization in cardiac tissue; it is mainly involved in the depolarization phase. While electrical activity within the heart influences repolarization, the specific ion movements described in choice A are what physiologically drive repolarization. Cell membranes need to be in an active state during repolarization, not calm, to facilitate the necessary ion movements for muscle tissue to properly function.

5. A nurse is teaching a patient about the use of raloxifene (Evista) for the prevention of osteoporosis. What is the primary therapeutic action of this medication?

• A. It decreases the absorption of calcium from the intestines.
• B. It decreases bone resorption and increases bone density.
• C. It increases the excretion of calcium through the kidneys.
• D. It stimulates the formation of new bone.

Correct answer: B

Rationale: The correct answer is B. Raloxifene, a selective estrogen receptor modulator (SERM), works by decreasing bone resorption and increasing bone density. This action helps in preventing osteoporosis by maintaining bone strength. Choice A is incorrect as raloxifene does not affect the absorption of calcium from the intestines. Choice C is incorrect as raloxifene does not increase the excretion of calcium through the kidneys. Choice D is incorrect as raloxifene does not directly stimulate the formation of new bone; instead, it primarily works by reducing bone loss.

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