Correct Answer: B

Rationale: The correct answer is B: Early detection of mental illness. Secondary prevention in community mental health care focuses on identifying mental health issues at an early stage to provide timely interventions. Choice A, teaching stress-reduction techniques, is more aligned with primary prevention aimed at preventing the onset of mental health problems. Choice C, leading support groups for clients with substance use disorder, pertains more to providing specific interventions for individuals with substance use issues rather than the general focus of secondary prevention. Choice D, rehabilitation and prevention of further issues, is more related to tertiary prevention, which involves addressing existing mental health conditions and preventing complications or recurrence.

Correct Answer: D

Rationale: Notifying the provider of the client's shellfish allergy is crucial to prevent a potential reaction from the contrast dye. While attaching a wristband indicating the allergy may be necessary, the priority is to inform the provider. Asking the client about other foods causing a similar reaction or notifying the dietary department, although important, are not the priority in this situation.

Correct Answer: B

Rationale: The correct answer is to stop the transfusion (Choice B). The symptoms described - chills, headache, and low back pain - are indicative of a transfusion reaction. The priority action is to immediately stop the transfusion to prevent further complications such as more severe reactions like hemolytic reactions or anaphylaxis. Administering acetaminophen (Choice A) may help with symptoms but does not address the underlying cause. Slowing the transfusion rate (Choice C) may not be sufficient if a serious transfusion reaction is occurring. Administering antihistamines (Choice D) is not the priority in this situation; stopping the transfusion takes precedence to ensure patient safety.

Correct Answer: A

Rationale: The correct answer is to maintain a foam wedge between the legs. This intervention helps prevent hip dislocation by maintaining proper leg alignment after surgery. Monitoring for shortening of the affected leg (choice B) is not directly related to preventing dislocation. Encouraging the use of elastic stockings (choice C) is more related to preventing deep vein thrombosis rather than dislocation. Avoiding flexing the hips more than 60 degrees (choice D) is important post-surgery, but it is not the most direct intervention to prevent dislocation.

Correct Answer: B

Rationale: The correct answer is B. The client with renal failure and high potassium levels requires immediate attention because hyperkalemia can lead to life-threatening cardiac complications. Administering sodium polystyrene sulfonate helps lower the potassium levels. Choice A, the client with pneumonia and a high WBC count, although important, does not present an immediate life-threatening condition. Choice C, the post-CABG client prescribed atorvastatin, and Choice D, the client with anemia and a hemoglobin level of 11g/dL prescribed epoetin alfa, do not require immediate intervention compared to managing hyperkalemia in a client with renal failure.