Correct Answer: D

Rationale: The correct statement is D: 'An RN evaluates the client's needs to determine which tasks are appropriate to delegate to assistive personnel.' This is an essential step in the delegation process to ensure that tasks are assigned appropriately based on the client's condition and the competencies of the assistive personnel. Option A is incorrect because while the nurse retains accountability for delegation decisions, the AP is responsible for their actions. Option B is incorrect as tasks should be within the AP's scope of practice regardless of training. Option C is incorrect as delegation typically involves assigning tasks from the RN to the AP, not between APs.

Correct Answer: D

Rationale: The correct answer is D, International normalized ratio (INR). INR is used to monitor the therapeutic effect of warfarin, an anticoagulant medication. Warfarin works by inhibiting the synthesis of vitamin K-dependent clotting factors. Monitoring the INR helps assess how well the medication is working to prevent blood clots. Choices A, B, and C are not specific indicators for monitoring the effectiveness of warfarin. Hemoglobin levels primarily assess the oxygen-carrying capacity of red blood cells, platelet count evaluates the clotting ability of blood, and PT measures the time it takes for blood to clot. While these values are important for overall health assessment, they do not directly reflect the anticoagulant effects of warfarin.

Correct Answer: B

Rationale: The correct answer is B: 'Potassium 5.2 mEq/L.' When a client is taking spironolactone, which is a potassium-sparing diuretic, monitoring potassium levels is crucial. A potassium level of 5.2 mEq/L is higher than normal and can lead to cardiac dysrhythmias, so it should be reported. Choices A, C, and D are within normal ranges and would not be of immediate concern when assessing a client taking spironolactone.

Correct Answer: A

Rationale: The correct answer is A. Taking the pulse before taking digoxin is crucial as it helps monitor the heart rate, as digoxin can cause bradycardia as a side effect. Option B is incorrect because digoxin should be taken on an empty stomach to enhance absorption. Option C is incorrect because digoxin should be held and the healthcare provider should be contacted if the heart rate is less than 60/min. Option D is incorrect because digoxin should not be taken with food due to decreased absorption.

Correct Answer: D

Rationale: The correct answer is D, decreased platelet count. In disseminated intravascular coagulation (DIC), there is widespread activation of clotting factors leading to the formation of multiple blood clots throughout the body, which can deplete platelets. A decreased platelet count is a hallmark of DIC. Elevated hemoglobin (choice A) and elevated white blood cell count (choice B) are not specific indicators of DIC. While fibrinogen levels (choice C) can be decreased in DIC due to consumption, a decreased platelet count is a more specific and early sign of DIC development.