Correct Answer: C

Rationale: The correct answer is C: Low chairs without armrests. This observation should be addressed by the nurse to promote a safe environment for the older adult client. Low chairs without armrests increase the risk of falls as they can be challenging for older adults to sit down on or get up from. Addressing this issue can help prevent falls and promote safety. Choices A, B, and D are not as crucial for promoting a safe environment compared to the risk posed by low chairs without armrests.

Correct Answer: B

Rationale: Obtaining a 12-lead ECG is crucial in this situation to assess cardiac function due to the elevated potassium level. High potassium levels can lead to dangerous arrhythmias, and an ECG helps in detecting any cardiac abnormalities. Choices A, C, and D are incorrect. Suggesting a salt substitute can further elevate the client's potassium levels. Checking serum sodium levels is not the priority when dealing with high potassium levels. Advising the client to add citrus juices and bananas, which are high in potassium, would worsen the situation.

Correct Answer: A

Rationale: To calculate the weight-bearing limit, we first need to convert 210 lbs to kg. To do this, we use the conversion factor 1 lb = 0.453592 kg. So, 210 lbs is equal to 210 * 0.453592 = 95.254 kg. One-third of 95.254 kg is 31.7513 kg, which can be rounded to 32 kg. Therefore, the client should bear 32 kg of weight on the right leg. Choice A is the correct answer. Choices B, C, and D are incorrect as they do not reflect the accurate calculation based on the client's weight and the prescribed weight-bearing limit.

Correct Answer: A

Rationale: The correct next action for the nurse to take is to check for orthostatic hypotension. This step is crucial as it ensures the client's safety during the transfer process. Orthostatic hypotension is a drop in blood pressure that can occur when a person moves from a lying down position to a sitting or standing position. By checking for orthostatic hypotension before transferring the client, the nurse can prevent potential complications such as dizziness, lightheadedness, or falls. Choices B, C, and D are incorrect in this scenario as they do not address the immediate safety concern of assessing for orthostatic hypotension.

Correct Answer: A

Rationale: The correct action for the nurse to take is to check the stockings for wrinkles. This is important to ensure that the stockings are applied correctly without any folds or wrinkles, which can hinder proper circulation and compression. Option B is incorrect because compression stockings should be applied with the client lying down, not sitting in a chair. Option C is unnecessary as the size of the client's foot is unlikely to change postoperatively. Option D is incorrect as compression stockings are usually worn continuously except for specific care needs.