Correct Answer: C

Rationale: In Cushing's disease, there is increased cortisol production, which can lead to various metabolic disturbances. One of the common findings is an increased serum potassium level. The other options are incorrect because Cushing's disease typically causes hyperglycemia, not decreased serum glucose levels (A), lymphocytopenia, not increased lymphocyte count (B), and hyponatremia, not decreased serum sodium level (D).

Correct Answer: D

Rationale: The correct answer is to inject the medication into the abdomen. Enoxaparin should be administered subcutaneously into the abdomen for optimal absorption. Choice A is incorrect as there is no specific interaction between enoxaparin and spinach. Choice B is incorrect as massaging the injection site after administration is not recommended and can increase bruising. Choice C is incorrect as enoxaparin injections should not be administered into the deltoid muscle.

Correct Answer: D

Rationale: Elevating the client's right arm on a pillow is essential post-mastectomy to reduce swelling and promote circulation. Placing the client in the supine position may not be comfortable or ideal after a mastectomy. Encouraging the client to lift objects with the right arm can strain the surgical site and hinder healing. Measuring the client's blood pressure on the right arm should be avoided to prevent disruption to the area and inaccurate readings.

Correct Answer: A

Rationale: The correct answer is A: Tingling in the fingers. Tingling in the fingers is a common sign of hypocalcemia, often seen after a thyroidectomy. Hypocalcemia can occur post-thyroidectomy due to inadvertent damage or removal of the parathyroid glands which regulate calcium levels. Choices B, C, and D are incorrect. Elevated blood pressure is not typically associated with hypocalcemia. Positive Chvostek's sign is a clinical sign of hypocalcemia but is usually assessed as facial muscle twitching, not tingling in the fingers. Positive Kernig's sign is a test for meningitis, not related to hypocalcemia.

Correct Answer: D

Rationale: Nonpitting ankle edema is a concerning sign of worsening preeclampsia due to fluid retention and should be reported immediately. Proteinuria of 1+ is a common finding in preeclampsia. A blood pressure of 120/80 mm Hg is within normal limits. A respiratory rate of 18/min is also within normal range. Therefore, choices A, B, and C are not as urgent as nonpitting ankle edema in this scenario.