Related Questions
Correct Answer is A
Explanation
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.

Correct Answer is B
Explanation
Choice A Reason: Observing for cerebrospinal fluid (CSF) leaks from the evacuation site is important, but not the first action that the nurse should take. CSF leaks can indicate a breach in the dura mater, which can increase the risk of infection and meningitis. The nurse should inspect the dressing and the nose and ears for any clear or bloody drainage, and report any findings to the provider. However, these measures are secondary to ensuring adequate oxygenation and perfusion.
Choice B Reason: The first action the nurse should take when caring for a client post-evacuation of a subdural hematoma is to check the oximeter to ensure adequate oxygenation. Maintaining proper oxygenation is a priority because hypoxia and hypercapnia can lead to cerebral vasodilation, increasing intracranial pressure (ICP) and worsening neurological outcomes.Key Concept: Always prioritize Airway, Breathing, and Circulation (ABCs) when determining the most immediate nursing intervention.
Choice C Reason: Assessing for an increase in temperature is another important action, but not the first one that the nurse should take. An increase in temperature can indicate an infection, inflammation, or damage to the hypothalamus, which can affect the thermoregulation of the body. The nurse should monitor the temperature and administer antipyretics as prescribed. However, these measures are secondary to ensuring adequate oxygenation and perfusion.
Choice D Reason:This is crucial, but oxygenation status should be checked first since low oxygen levels can worsen ICP.
