chemotherapeutic agents often produce a degree of myelosuppression including leukopenia leukopenia does not present immediately but is delayed several
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NCLEX-PN

NCLEX-PN Quizlet 2023

1. Chemotherapeutic agents often produce a degree of myelosuppression including leukopenia. Leukopenia does not present immediately but is delayed several days or weeks because:

Correct answer: D

Rationale: Leukopenia does not present immediately after chemotherapy because time is required to clear circulating cells before the effect on precursor cell maturation in the bone marrow becomes evident. Leukopenia is characterized by an abnormally low white blood cell count. The correct answer is D because the white cell count is not immediately affected by chemotherapy. Choices A, B, and C are incorrect as they pertain to red blood cells (hemoglobin and hematocrit), which are not directly related to the delayed onset of leukopenia.

2. Which physiologic mechanism best describes the function of the sodium-potassium pump?

Correct answer: A

Rationale: Active transport is the correct answer as it accurately describes the process involved in the sodium-potassium pump. The pump utilizes energy to move ions against their concentration gradient, maintaining cellular concentrations. Diffusion (choice B) is a passive process where substances move from an area of higher concentration to lower concentration. Filtration (choice C) involves the movement of solutes based on pressure gradients. Osmosis (choice D) is the movement of water across a semipermeable membrane.

3. A physician orders a serum creatinine for a hospitalized client. The nurse should explain to the client and his family that this test:

Correct answer: C

Rationale: A serum creatinine level should be 0.7 to 1.5 mg/dl, and it does not vary with increased protein intake, so it is a better indicator of renal function than the BUN. Choice A is incorrect as a serum creatinine level of 4.0 to 5.5 mg/dl is not normal. Choice B is incorrect as serum creatinine is not affected by increased protein intake. Choice D is incorrect as serum creatinine primarily reflects renal function, not fluid volume status.

4. Herbal therapy has several indications for use. Primarily, herbal therapy is:

Correct answer: A

Rationale: The correct answer is A: 'used to treat many common complaints and diseases.' Herbal therapy is commonly used to address a variety of health issues and ailments by utilizing natural remedies derived from plants. Choices B, C, and D are incorrect because herbal therapy's primary purpose is not to promote specific diets, act as an adjunct to medications, or create specific dietary restrictions, but rather to provide alternative treatment options for various health conditions.

5. Teaching the client with gonorrhea how to prevent reinfection and further spread is an example of

Correct answer: B

Rationale: The correct answer is B: secondary prevention. This type of prevention focuses on reducing the impact of a disease by early detection and treatment. In the case of gonorrhea, teaching the client how to prevent reinfection and further spread falls under secondary prevention because it aims to reduce the prevalence and morbidity of the disease. Choice A (primary prevention) involves measures to prevent the disease from occurring in the first place, such as vaccination. Choice C (tertiary prevention) focuses on managing the long-term consequences of a disease to prevent complications. Choice D (primary health care prevention) is not a recognized term in prevention strategies.

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