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. A nurse is watching as a new nurse employee administers an intramuscular (IM) injection in a client's deltoid muscle. The nurse determines that the new employee is performing the procedure correctly if the new employee uses which technique?

Correct answer: A

Rationale: When administering an intramuscular injection in the deltoid muscle, the correct technique involves administering the injection 2 inches below the acromion process, which is the bony structure on top of the shoulder blade. This location ensures safe and effective administration. Administering the injection in the thigh (vastus lateralis or rectus femoris muscle) is not appropriate for a deltoid injection as the deltoid muscle is located in the upper arm. The Sims position is not the correct position for a deltoid muscle injection. While positioning the client with the deltoid muscle exposed allows for proper access and visualization, the critical aspect for a correct deltoid injection is the accurate injection site, 2 inches below the acromion process.

3. All of the following are causes of vaginal bleeding in late pregnancy except:

Correct answer: B

Rationale: The correct answer is B: Eclampsia. Eclampsia is a disorder of pregnancy characterized by hypertension, proteinuria, and edema. This condition can cause seizures and/or coma but does not typically present with vaginal bleeding. Choices A, C, and D are abnormal conditions that can cause bleeding, particularly in the third trimester. Placenta previa (choice A) is a condition where the placenta partially or completely covers the cervix, leading to vaginal bleeding. Abruptio placentae (choice C) is the premature separation of the placenta from the uterine wall, causing vaginal bleeding. Uterine rupture (choice D) is a serious obstetrical emergency where the uterus tears during pregnancy or childbirth, resulting in severe bleeding.

4. Which of the following conditions has a severe complication of respiratory failure?

Correct answer: B

Rationale: Guillain-Barré syndrome is characterized by a severe complication of respiratory failure due to the involvement of the peripheral nerves that control breathing. While Bell's palsy, trigeminal neuralgia, and tetanus are also conditions affecting peripheral nerves, they do not typically lead to respiratory failure like Guillain-Barré syndrome. Bell's palsy causes facial muscle weakness, trigeminal neuralgia results in severe facial pain, and tetanus leads to muscle stiffness and spasms, but none of these conditions directly involve respiratory failure.

5. While caring for the following clients, a pediatric nurse tells the charge nurse she must leave due to a family emergency. Which client would the charge nurse reassign to an LPN?

Correct answer: D

Rationale: The correct answer is a five-year-old in skeletal traction. This task is within the scope of practice for an LPN and would need minimal assistance from an RN. The children with diabetic ketoacidosis, sickle cell crisis, and dehydration require close observation, good assessment skills, IVF needs, and medications that would be better managed by an RN. Reassigning the child in skeletal traction to an LPN ensures appropriate care while allowing the RN to focus on the more critical cases.

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