Nursing Elites

1. Tamoxifen is prescribed for the client with metastatic breast carcinoma. The nurse understands that the primary action of this medication is to:

• A. Increase DNA and RNA synthesis.
• B. Promote the biosynthesis of nucleic acids.
• C. Increase estrogen concentration and estrogen response.
• D. Compete with estradiol for binding to estrogen in tissues containing high concentrations of receptors.

Correct answer: D

Rationale: The primary action of tamoxifen, an antineoplastic medication used in metastatic breast carcinoma, is to compete with estradiol for binding to estrogen receptors in tissues with high receptor concentrations. By doing so, tamoxifen reduces DNA synthesis and estrogen response, leading to its therapeutic effect in inhibiting the growth of estrogen-sensitive breast cancer cells.

2. The client with metastatic breast cancer is receiving tamoxifen. The nurse specifically monitors which laboratory value while the client is taking this medication?

• A. Glucose level
• B. Calcium level
• C. Potassium level
• D. Prothrombin time

Correct answer: B

Rationale: The correct answer is B: Calcium level. Tamoxifen may increase calcium levels, leading to hypercalcemia. Symptoms of hypercalcemia include increased urine volume, excessive thirst, nausea, vomiting, constipation, muscle weakness, and bone pain. Monitoring serum calcium levels is essential to detect and manage this potential side effect. Choices A, C, and D are incorrect because tamoxifen does not directly affect glucose, potassium, or prothrombin time levels significantly.

3. Heparin sodium is prescribed for the client. The nurse expects that the healthcare provider will prescribe which of the following to monitor for a therapeutic effect of the medication?

• A. Hematocrit level
• B. Hemoglobin level
• C. Prothrombin time (PT)
• D. Activated partial thromboplastin time (aPTT)

Correct answer: D

Rationale: The correct answer is D, activated partial thromboplastin time (aPTT). Heparin affects the intrinsic pathway of coagulation. Monitoring aPTT helps ensure that heparin sodium is within the therapeutic range to prevent clot formation. Hematocrit and hemoglobin levels assess red blood cell concentrations and are not specific to monitoring heparin therapy. Prothrombin time (PT) is used to monitor the therapeutic effect of warfarin sodium, which affects the extrinsic pathway of coagulation, not heparin.

4. Insulin glargine (Lantus) is prescribed for a client with diabetes mellitus. The nurse tells the client that it is best to take the insulin:

• A. 1 hour after each meal
• B. Once daily, at the same time each day
• C. 15 minutes before breakfast, lunch, and dinner
• D. Before each meal, based on the blood glucose level

Correct answer: B

Rationale: Insulin glargine (Lantus) is a long-acting insulin with a duration of action of approximately 24 hours, making it suitable for once-daily dosing at the same time each day. This regimen helps maintain consistent blood glucose levels and simplifies the client's treatment routine. Taking insulin glargine once daily provides basal insulin coverage throughout the day, reducing the risk of hypoglycemia compared to short-acting insulins that are taken before each meal.

5. A client has a prescription for albuterol (Proventil HFA) (two puffs) and beclomethasone dipropionate (Qvar) (nasal inhalation, two puffs) by metered-dose inhaler. The medications are to be administered by the nurse by giving the:

• A. Albuterol first and then the beclomethasone dipropionate
• B. Beclomethasone dipropionate first and then the albuterol
• C. Alternating a single puff of each, beginning with the albuterol
• D. Alternating a single puff of each, beginning with the beclomethasone dipropionate

Correct answer: A

Rationale: Albuterol, as a bronchodilator, should be administered first to help open up the airways, followed by beclomethasone dipropionate to reduce inflammation in the airways. This sequence ensures optimal therapeutic effects of the medications.

Similar Questions