An adult with head and facial injuries from a motor vehicle collision is fully immobilized and has a Glasgow coma score of 6. The client is intubated, sedated, and is being prepared for transfer to a regional trauma center. Which intervention(s) should the nurse implement? Select all that apply.

A. Place a cooling blanket on the client. A temperature of 100°F (37.8°C) is only mildly elevated and does not require active cooling. The priority concern is hemodynamic instability due to hypovolemia, not fever management. Cooling blankets are typically used for high fevers (≥ 102°F or 38.9°C).
B. Administer an antipyretic agent. While fever may indicate postoperative infection or inflammatory response, the client’s most critical issue is hypotension and low urine output, suggesting hypovolemia or early shock. Treating the underlying cause (fluid loss) is more urgent than giving an antipyretic.
C. Give a 500 mL IV fluid bolus challenge. The client has tachycardia (132 bpm), hypotension (88/65 mm Hg), and oliguria (10 mL/hour), all of which suggest hypovolemic shock, a common postoperative complication. A fluid bolus (typically 500–1000 mL of isotonic crystalloid such as normal saline or lactated Ringer’s) is the first-line treatment to restore intravascular volume, improve blood pressure, and increase urine output.
D. Titrate IV vasopressor for systolic less than 80. Vasopressors (e.g., norepinephrine) are not the first-line treatment for hypovolemic shock. Fluids should be administered first to correct volume loss before considering vasopressors. If hypotension persists despite adequate fluid resuscitation, vasopressors may be initiated.

A. Heparin is infused in less than four hours. The heparinized solution used in an intra-arterial (IA) pressure infuser is not intended for systemic anticoagulation but rather to maintain catheter patency. The infusion rate is typically slow and continuous, and completing the infusion in less than four hours is not an indicator of effectiveness.
B. Systolic blood pressure greater than 120 mm Hg. Heparin in an IA pressure infuser does not directly affect blood pressure. Its purpose is to prevent clot formation within the catheter, ensuring uninterrupted arterial pressure monitoring. BP readings are monitored separately and are not an indicator of heparin’s therapeutic effect.
C. No knee pain upon forced dorsiflexion. This assessment is used to evaluate deep vein thrombosis (DVT) (Homan's sign), which is not related to arterial catheter function. The low-dose heparin in the pressure infuser does not provide systemic anticoagulation, making this finding irrelevant.
D. Intra-arterial cannula remains patent. The primary purpose of heparinized flush solutions in IA lines is to prevent clot formation within the catheter and maintain patency for continuous blood pressure monitoring or arterial blood sampling. A patent arterial line confirms that the heparin infusion is achieving its intended effect.