A nurse is caring for a client who has a pulmonary embolism and has a new prescription for enoxaparin 1.5 mg/kg/dose subcutaneously every 12 hours. The client weighs 245 lbs. How many mg should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Choice A Reason: This is correct because a pulmonary artery catheter is a device that measures the pressures and flows in the heart and lungs, such as the pulmonary artery pressure, the pulmonary artery wedge pressure, the cardiac output, and the mixed venous oxygen saturation. These parameters reflect the hemodynamic status of the client, which is the balance between the cardiac output and the systemic vascular resistance.

Choice B Reason: This is incorrect because a pulmonary artery catheter does not measure spinal cord perfusion, which is the blood flow to the spinal cord. Spinal cord perfusion can be affected by spinal cord injury, spinal anesthesia, or spinal surgery.

Choice C Reason: This is incorrect because a pulmonary artery catheter does not measure renal function, which is the ability of the kidneys to filter waste products and maintain fluid and electrolyte balance. Renal function can be assessed by urine output, blood urea nitrogen, creatinine, and glomerular filtration rate.

Choice D Reason: This is incorrect because a pulmonary artery catheter does not measure intracranial pressure, which is the pressure inside the skull. Intracranial pressure can be increased by brain injury, stroke, tumor, infection, or hydrocephalus.

Choice A Reason: Preventing musculoskeletal disability is important, but not the priority focus of care. The nurse should first assess and manage the client's life-threatening injuries, such as airway obstruction, bleeding, shock, or brain injury.

Choice B Reason: Airway protection is the priority focus of care for a client with multiple system trauma. The nurse should ensure that the client has a patent airway and adequate ventilation, as any compromise in these areas can quickly lead to hypoxia, respiratory failure, and death.

Choice C Reason: Stabilizing cardiac arrhythmias is also important, but not the priority focus of care. The nurse should monitor the client's cardiac rhythm and treat any arrhythmias that may occur, but only after securing the airway and breathing.

Choice D Reason: Decreasing intracranial pressure is another important goal, but not the priority focus of care. The nurse should assess the client's neurological status and intervene to prevent or reduce increased intracranial pressure, such as elevating the head of the bed, maintaining normothermia, and administering osmotic diuretics. However, these measures are secondary to ensuring adequate oxygenation and perfusion.