Correct Answer: C

Rationale: The correct answer is C because a significant increase in the circumference of the right calf compared to the left calf is a classic sign of deep vein thrombosis (DVT). Option A is incorrect as dorsiflexing the right foot and left on command does not specifically indicate DVT. Option B describes an ecchymosis area which is more indicative of a bruise rather than DVT. Option D suggests bilateral lower extremity edema, which is not specific to DVT and can be seen in various conditions such as heart failure or renal issues.

Correct Answer: C

Rationale: The correct action for the nurse to take first is to assess the client's oxygen saturation level. In a client with COPD and abnormal respiratory and heart rates, determining the oxygen saturation helps evaluate the adequacy of oxygen exchange and the severity of respiratory distress. Administering a bronchodilator (choice A) can be appropriate but assessing oxygen saturation takes priority. Encouraging deep breathing and coughing (choice B) may not address the immediate need for oxygenation assessment. Obtaining an arterial blood gas (choice D) is important but typically follows the initial assessment of oxygen saturation.

Correct Answer: A

Rationale: The correct answer is A: Tachycardia, mental status change, and low urine output are early signs of shock. Tachycardia is the body's compensatory mechanism to maintain perfusion, mental status changes can indicate decreased cerebral perfusion, and low urine output reflects poor renal perfusion. Choices B, C, and D are incorrect. Warm skin, hypertension, and constricted pupils are not typical findings in the early stages of shock. Bradycardia, hypotension, and respiratory acidosis are more indicative of late-stage shock. Mottled skin, tachypnea, and hyperactive bowel sounds can be seen in various conditions but are not specific early signs of shock.

Correct Answer: D

Rationale: The correct answer is D, 'Measure all emesis accurately.' When a client with a small bowel obstruction is experiencing frequent vomiting, measuring emesis accurately is crucial for monitoring fluid balance and preventing dehydration. Choice A, 'Maintain a quiet environment,' while important for patient comfort, is not as critical as accurately measuring emesis. Choices B and C, 'Ensure the linens are clean and dry' and 'Place an air deodorizer in the room,' focus on environmental factors that, although helpful, are not as essential as monitoring the client's fluid balance in this situation.

Correct Answer: B

Rationale: In this situation, the nurse should prioritize the safety of the client. Taking the client to a room for supervision by staff is crucial to ensure immediate safety and further assessment of the client's condition. While cleaning and assessing the client's wrists are important, ensuring ongoing safety and monitoring by staff is the priority. Calling the healthcare provider at this moment may cause delays in providing immediate assistance. Finding supplies to put a dressing on the client's wrists can wait until the client is in a safe environment. Therefore, option B is the best course of action to address the client's safety needs promptly.