the factor that most determines drug distribution is
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Nursing Elites

NCLEX-PN

NCLEX PN Exam Cram

1. The factor that most determines drug distribution is:

Correct answer: A

Rationale: The correct answer is 'vascular perfusion of the tissue or organ.' Drug distribution is primarily determined by how well the circulatory system delivers the drug to various tissues and organs. Adequate perfusion ensures proper distribution of the drug throughout the body. While the salt form (choice B), drug interactions (choice C), and steady state (choice D) can influence drug efficacy and metabolism, they are not as crucial as vascular perfusion for the initial distribution of a drug.

2. A patient has recently been prescribed Lidocaine Hydrochloride. Which of the following symptoms may occur with an overdose?

Correct answer: B

Rationale: The correct answer is 'Confusion and fatigue.' Lidocaine Hydrochloride, when taken in excess, can lead to symptoms such as confusion and fatigue. It affects the central nervous system, leading to these cognitive and physical impairments. Choice A ('Memory loss and lack of appetite') is incorrect because memory loss is not a common symptom of Lidocaine Hydrochloride overdose, and lack of appetite is not a typical effect. Choice C ('Heightened reflexes') is incorrect as Lidocaine Hydrochloride overdose usually depresses reflexes rather than heightening them. Choice D ('Tinnitus and spasticity') is incorrect as tinnitus and spasticity are not commonly associated with Lidocaine Hydrochloride overdose.

3. After a left heart catheterization (LHC), a client complains of severe foot pain on the side of the femoral stick. The nurse notes pulselessness, pallor, and a cold extremity. What should the nurse's next action be?

Correct answer: D

Rationale: The correct action for the nurse to take next is to notify the physician immediately (stat). The client's symptoms of foot pain, pulselessness, pallor, and cold extremity suggest a potential vascular complication, such as arterial occlusion. Prompt notification of the physician is crucial as this condition requires urgent intervention to restore blood flow and prevent tissue damage. Administering an anticoagulant (Choice A) without physician evaluation could be harmful as the underlying cause needs to be determined first. Warming the room and re-assessing (Choice B) may delay necessary treatment. Increasing IV fluids (Choice C) is unlikely to address the urgent vascular issue indicated by the symptoms described.

4. Which of the following injuries, if demonstrated by a client entering the Emergency Department, is the highest priority?

Correct answer: C

Rationale: A stab wound to the chest might result in lung collapse and mediastinal shift that, if untreated, could lead to death. Treatment of an obstructed airway or a chest wound is a higher priority than hemorrhage. The principle of ABC (airway, breathing, and circulation) prioritizes care decisions. In this scenario, the stab wound to the chest poses the highest risk to the client's life as it can lead to severe complications such as lung collapse and mediastinal shift. Addressing this injury promptly is crucial to prevent further harm or potential fatality. Open leg fracture, open head injury, and traumatic amputation of a thumb, while serious, do not pose an immediate life-threatening risk compared to a stab wound to the chest.

5. Which of the following should be included in a diet rich in iron?

Correct answer: A

Rationale: The correct answer is peaches, eggs, beef. These are good sources of heme iron, which is more easily absorbed by the body compared to nonheme iron. Heme iron is mainly found in animal-based foods like meat, poultry, and fish. Peaches, eggs, and beef are rich in iron and can help prevent iron deficiency anemia. Choices B, C, and D are incorrect because they do not include significant sources of heme iron. Cereals, kale, cheese, red beans, enriched breads, squash, legumes, and green beans are sources of nonheme iron, which is not as efficiently absorbed by the body as heme iron. It is important to include heme iron sources in the diet for optimal iron absorption.

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