Correct Answer: D

Rationale: Monitoring the intravenous site hourly is essential to identify early signs of extravasation, such as swelling or pain, which can help prevent tissue damage. Prompt detection allows for immediate intervention, minimizing the risk of serious complications associated with vesicant extravasation.

Correct Answer: B

Rationale: An Intracranial Pressure (ICP) of 20 mm Hg is at the upper limit of normal and may indicate increased intracranial pressure, which is a critical finding in a client with a severe head injury. Elevated ICP can lead to further brain damage and must be addressed promptly to prevent complications such as herniation. Monitoring and managing ICP are crucial in the care of patients with head injuries in the ICU.

Correct Answer: C

Rationale: The correct answer is C. A pulse rate of 56 BPM can be considered a normal finding for a primigravida client who is 12 hours postpartum. Postpartum bradycardia can occur due to increased stroke volume and decreased vascular resistance after delivery. It is important for the nurse to monitor the client's vital signs and recognize that a lower pulse rate can be expected in the immediate postpartum period. Choices A, B, and D are incorrect because a soft, spongy fundus may indicate uterine atony, saturating two perineal pads per hour is excessive bleeding, and unilateral lower leg pain could suggest deep vein thrombosis, all of which would require further assessment and intervention.

Correct Answer: C

Rationale: Administering IV adenosine is the appropriate intervention for a client with symptomatic tachycardia to restore normal sinus rhythm. Adenosine is a medication used to treat supraventricular tachycardia (SVT) by interrupting the reentry pathways through the AV node and restoring normal sinus rhythm. It is a rapid-acting medication given as a rapid IV push followed by a saline flush. The dose is typically administered in a healthcare setting where cardiac monitoring is available due to its potential to cause transient asystole.

Correct Answer: A

Rationale: Asterixis, also known as flapping tremor, is a characteristic sign of hepatic encephalopathy, a severe complication of liver cirrhosis. Hepatic encephalopathy results from the liver's inability to detoxify substances in the body, leading to neurologic manifestations such as changes in mental status, confusion, and asterixis.