the tendency of a drug to combine with its receptor is called
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Nursing Elites

NCLEX-PN

Nclex Questions Management of Care

1. 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.

2. The nurse is preparing to administer IV Vancomycin to a client. Which of the following nursing actions should be taken first?

Correct answer: D

Rationale: Before administering any medication, including IV Vancomycin, it is crucial to ensure that the client is not allergic to the medication. This is the most critical action to prevent any potential allergic reactions. While performing a physical assessment is important, it may not be as time-sensitive as checking for allergies. Obtaining lab values related to renal function is also significant with Vancomycin due to its potential nephrotoxicity, but ensuring the client's safety by checking for allergies takes precedence. Reviewing peaks and troughs is important for monitoring drug levels, but it is a secondary step compared to checking for allergies prior to administration.

3. Why would a nurse employed at a hospital be asked by a nurse manager to review the organizational chart?

Correct answer: B

Rationale: The correct answer is 'To be familiar with the organization's line of authority.' Organizational charts provide a visual representation of the chain of command, reporting relationships, and structure within an organization. This helps employees understand who they report to, who reports to them, and the overall hierarchy. Choice A is incorrect because understanding the geographic area served is more about the organization's scope, not depicted in an organizational chart. Choice C is incorrect as it relates to the organization's reason for existence, usually found in its mission statement. Choice D is incorrect as beliefs and values are linked to the organization's culture, not typically shown in an organizational chart.

4. 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.

5. A client admitted to the hospital has a do-not-resuscitate (DNR) order in his medical record. The nurse understands which information about DNR orders?

Correct answer: D

Rationale: The correct answer is that the DNR order requires frequent review as specified by state or agency policy. If the client's condition changes, the DNR order may need to be changed. For this reason, DNR orders require frequent review as specified by state or agency policy. A DNR order may be changed at any time and does not remain in effect for the duration of the client's hospitalization. The client's request regarding DNR status is the priority. Choice A is incorrect because healthcare providers, not just immediate family members, may change the DNR order based on the client's condition. Choice B is incorrect as DNR orders can be changed if the client's condition warrants it, not remaining unchanged. Choice C is incorrect as DNR orders are not fixed for the duration of hospitalization, they can be modified based on the client's needs.

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