Correct Answer: C

Rationale: When a nurse observes periods of apnea in a client experiencing Cheyne-Stokes respirations, measuring the length of the apneic periods is essential. This action helps in determining the severity of Cheyne-Stokes respirations by providing valuable information about the duration of interrupted breathing cycles. Elevating the head of the client's bed (Choice A) may be beneficial in some respiratory conditions but is not the priority in Cheyne-Stokes respirations. Auscultating the client's breath sounds (Choice B) is a general assessment and may not directly address the issue of apnea in Cheyne-Stokes respirations. Suctioning the client's oropharynx (Choice D) is not the initial intervention for managing Cheyne-Stokes respirations unless secretions are obstructing the airway.

Correct Answer: C

Rationale: The correct answer is C: Select a large, deep muscle mass. When administering an intramuscular injection with a painful medication volume of 3 ml, selecting a large and deep muscle mass is crucial. This intervention reduces discomfort for the patient and ensures proper absorption of the medication. Choice A is incorrect because instilling the medication quickly can increase discomfort. Choice B is incorrect as inserting the needle slowly may prolong the discomfort. Choice D is incorrect as using a short, small gauge needle may not be suitable for delivering 3 ml of medication effectively into the muscle.

Correct Answer: D

Rationale: The correct answer is D. When assessing a client diagnosed with a brain tumor, asking about seizures is crucial because they can be a common symptom associated with brain tumors. Seizures in this context could provide valuable information regarding the progression and impact of the brain tumor on the client's neurological status. Choices A, B, and C are important questions in a general assessment, but when specifically focusing on a client with a brain tumor, inquiring about seizures takes priority due to its direct relevance to the condition.

Correct Answer: B

Rationale: The correct answer is B: Inspection of the mouth. This assessment technique is crucial for monitoring gingival hyperplasia, a common side effect of phenytoin. Bladder palpation (choice A) is not relevant to monitoring for phenytoin's side effects. Blood glucose monitoring (choice C) is important for clients with diabetes but is not specifically related to phenytoin. Auscultation of breath sounds (choice D) is more relevant for assessing respiratory conditions, not side effects of phenytoin.

Correct Answer: B

Rationale: The correct answer is B: Perform the Crede maneuver. The Crede maneuver is a technique used to manage a flaccid bladder by applying manual pressure over the bladder area to assist in the expulsion of urine. This technique helps promote bladder emptying. Choice A is incorrect because using manual pressure to express urine is not a standardized technique and may cause harm. Choice C is incorrect as applying an external urinary drainage device does not address the need for bladder training. Choice D is unrelated to bladder training for a flaccid bladder.