What is the term for the tendency of a drug to combine with its receptor?

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Question 1 of 5

What is the term for the tendency of a drug to combine with its receptor?

Correct Answer: D

Rationale: The correct answer is 'affinity.' Affinity refers to the close relationship or mutual attraction between a drug and its receptor, indicating the strength of the drug-receptor bonding. Potency (Choice A) is related to the dose of a drug needed to produce a specific effect. Efficacy (Choice B) refers to a drug's ability to generate the desired effect. Kinetics (Choice C) deals with forces affecting the motion of material bodies or changes in a system, which is not directly associated with the bonding between a drug and its receptor.

Question 2 of 5

When observing a dressing change by a graduate nurse on a Stage III pressure ulcer to the greater trochanter by the staff nurse, a need for further teaching is indicated after the following observation by the nurse:

Correct Answer: B

Rationale: The correct answer is that the new graduate irrigates the pressure ulcer with half-strength hydrogen peroxide. Pressure ulcers should not be cleaned with substances that are cytotoxic, such as hydrogen peroxide or betadine. This can cause further damage to the wound and delay the healing process. Choice A is incorrect because irrigating the pressure ulcer with normal saline is an appropriate practice. Choice C is incorrect because packing the wound with sterile kerlix soaked in normal saline is also an appropriate step. Choice D is incorrect because applying a Duoderm dressing after cleansing is a standard procedure in wound care.

Question 3 of 5

The nurse on the 3-11 shift is assessing the chart of a client with an abdominal aneurysm scheduled for surgery in the morning and finds that the consent form has been signed, but the client is unclear about the surgery and possible complications. Which is the most appropriate action?

Correct Answer: A

Rationale: The most appropriate action in this scenario is to call the surgeon and ask them to see the client to clarify the information. It is the responsibility of the physician to explain and clarify the procedure to the client, ensuring informed consent. Answer B is incorrect as nurses should not provide detailed medical explanations beyond their scope of practice. Answer C is incorrect as the physician's notes may not capture the client's current understanding accurately. Answer D is incorrect because the client's own understanding, not the family's, is crucial for informed decision-making regarding the surgery.

Question 4 of 5

The client with a diagnosis of hepatitis is experiencing pruritus. Which would be the most appropriate nursing intervention?

Correct Answer: B

Rationale: Pruritus, or itching, in clients with hepatitis can be alleviated by adding moisturizing agents to bath water. Baby oil helps soothe and moisturize the skin, reducing dryness and itching. Warm showers, as in choice A, can be drying to the skin if taken too frequently, making it less suitable than adding oil to the bath water. Applying powder, as mentioned in choice C, can exacerbate dryness rather than alleviate it. Choice D suggests a cool-water rinse after bathing, which can help in retaining moisture and is less drying compared to hot water rinses.

Question 5 of 5

The graduate licensed practical nurse is assigned to care for the client on ventilator support, pending organ donation. Which goal should receive priority?

Correct Answer: A

Rationale: When caring for a client on ventilator support pending organ donation, maintaining the systolic blood pressure at 70mmHg or greater is crucial to ensure a proper blood supply to the donor organ. This goal is a priority to maintain the viability of the organ for donation. Choices B, C, and D are incorrect because they are unnecessary and not directly related to the immediate goal of organ donation. Maintaining urinary output, body temperature, or hematocrit levels are not the primary concerns in this situation.

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