Correct Answer: A

Rationale: To maintain the sterility of the field, the nurse should place the cap from the solution sterile side up on a clean surface. This action helps prevent contamination. Choice B is incorrect because opening the outermost flap toward the body increases the risk of introducing contaminants onto the sterile field. Choice C is incorrect as the sterile dressing should be placed at least 2.5 cm (1 in) from the edge of the sterile field to prevent accidental contamination. Choice D is incorrect because setting up the sterile field above waist level could lead to inadvertent contact and compromise the field's sterility.

Correct Answer: B

Rationale: Encouraging the client to gradually resume self-care tasks with frequent rest periods is the best strategy to promote self-care for a client who experienced an acute myocardial infarction and is experiencing fatigue. This approach helps the client regain independence while managing fatigue. Asking family members to assist with all self-care tasks (Choice A) may hinder the client's independence. Instructing the client to remain in bed until fully rested (Choice C) may lead to deconditioning and dependency. Assigning assistive personnel to complete self-care tasks for the client (Choice D) does not empower the client to regain independence or actively participate in self-care.

Correct Answer: A

Rationale: The correct answer is A: Excessive thirst and fruity breath odor. Diabetic ketoacidosis presents with these early signs due to ketone buildup in the body. Choice B, weight loss and increased urination, are more characteristic of uncontrolled diabetes but not specific to diabetic ketoacidosis. Choice C, nausea and vomiting, can occur in diabetic ketoacidosis but are not as early or specific as excessive thirst and fruity breath odor. Choice D, hypoglycemia and fatigue, are not typical signs of diabetic ketoacidosis; rather, diabetic ketoacidosis usually presents with hyperglycemia.

Correct Answer: A

Rationale: The correct answer is A, dry mouth, and B, increased thirst are early indicators of dehydration. Dry mouth occurs when the body is dehydrated, and increased thirst is the body's way of trying to increase fluid intake to combat dehydration. Choices C and D, decreased urine output and dizziness, can be signs of severe dehydration but are not typically considered early indicators.

Correct Answer: B

Rationale: The correct action for the nurse to take when caring for a client with schizophrenia experiencing auditory hallucinations is to ask the client directly what they are hearing. This approach helps the nurse gain insight into the client's experience, establish effective communication, and provide appropriate support. Encouraging the client to lie down in a quiet room (Choice A) may not address the hallucinations directly. Telling the client that the voices are not real (Choice C) can be invalidating and may lead to further distress. Providing headphones for music (Choice D) may not be effective in addressing the client's hallucinations.