Correct Answer: C

Rationale: The correct answer is C: Moon face and buffalo hump. In Cushing's syndrome, excess production of corticosteroids leads to redistribution of fat, particularly in the face (moon face) and between the shoulders (buffalo hump). Hyperpigmentation of the skin is actually associated with Addison's disease, not Cushing's syndrome (choice A). Hypotension is not a typical finding in Cushing's syndrome; instead, hypertension is more commonly seen due to the effects of excess cortisol (choice B). Weight gain, rather than weight loss, is a common symptom of Cushing's syndrome due to the metabolic disturbances caused by excess cortisol (choice D).

Correct Answer: C

Rationale: Numbness and tingling around the mouth can indicate hypocalcemia, a common complication post-thyroidectomy due to inadvertent parathyroid gland removal. Immediate intervention is required to prevent severe hypocalcemia manifestations like tetany or seizures. Hoarseness and a sore throat are common after a thyroidectomy due to surgical trauma and irritation to the vocal cords, not requiring immediate intervention. Difficulty swallowing can be expected due to postoperative swelling or edema, but it should be monitored closely. A temperature of 100.2°F is a mild fever and may be a normal postoperative response, not necessitating immediate intervention unless accompanied by other concerning symptoms.

Correct Answer: B

Rationale: Taking calcium supplements with meals is a crucial instruction for a client with osteoporosis. Calcium absorption is enhanced when taken with food, and proper calcium intake is essential for managing osteoporosis effectively by promoting bone health and density. Avoiding weight-bearing exercises (Choice A) is incorrect because these exercises help improve bone strength. Limiting vitamin D intake (Choice C) is also incorrect as vitamin D is necessary for calcium absorption. Increasing caffeine intake (Choice D) is not recommended as caffeine can interfere with calcium absorption.

Correct Answer: B

Rationale: Encouraging passive range-of-motion exercises is the most appropriate intervention to help relieve symptoms of joint pain and stiffness in clients with severe rheumatoid arthritis. These exercises help maintain joint mobility, prevent muscle contractures, and reduce stiffness in the affected joints. Passive range-of-motion exercises can also improve circulation to the joints, promoting healing and reducing pain. Applying cold packs may help with inflammation and pain temporarily, but it does not address the long-term joint mobility issues associated with rheumatoid arthritis. Muscle relaxants are not typically indicated for managing joint pain and stiffness in rheumatoid arthritis. While nutrition is important for overall health, providing a high-calorie diet is not a direct intervention for relieving joint pain and stiffness in this context.

Correct Answer: B

Rationale: A serum potassium level of 2.8 mEq/L is critically low and can cause cardiac arrhythmias, requiring immediate intervention. Hypokalemia is a life-threatening condition that needs prompt correction to prevent serious complications. High serum glucose levels (choice A) are a concern in diabetes but do not pose an immediate life-threatening risk compared to severe hypokalemia. Serum sodium (choice C) and serum bicarbonate levels (choice D) are within normal ranges and do not require immediate intervention.