The nurse is evaluating the cranial nerves of a person with Parkinson disease who has difficulty swallowing foods. The nurse asks the patient to stick out their tongue and move it rapidly from side to side. The nurse is assessing which cranial nerve?

Choice A reason: Notifying the health care provider of the patient's status is an important action, but not the first priority. The nurse should first assess the patient for any possible triggers of the autonomic dysreflexia, which is a life-threatening condition that occurs in patients with spinal cord injury above the level of T6. It is characterized by a sudden and severe increase in blood pressure, flushing, sweating, headache, and blurred vision.

Choice B reason: Assessing patient for tight clothing around the waist or a full bladder is the first priority action. These are common triggers of autonomic dysreflexia, which cause irritation or stimulation of the nerves below the level of injury. The nurse should remove any tight clothing, catheterize the patient if needed, or perform a bowel evacuation to relieve the pressure and prevent further complications.

Choice C reason: Reviewing the medication administration record for an antihypertensive order is a secondary action, after identifying and removing the trigger of autonomic dysreflexia. The nurse should administer the prescribed antihypertensive medication, such as nifedipine or nitroglycerin, to lower the blood pressure and prevent stroke, seizure, or cardiac arrest.

Choice D reason: Initiating oxygen via a nasal cannula and elevating patient's legs is not an appropriate action for a patient with autonomic dysreflexia. Oxygen therapy is not indicated for this condition, unless the patient has hypoxia or respiratory distress. Elevating the patient's legs can worsen the blood pressure by increasing the venous return and the cardiac output. The nurse should keep the patient in a sitting position to promote the blood flow to the lower extremities and reduce the blood pressure.

Choice A reason: Completing a halo test with the fluid is the initial intervention that the nurse should perform, as it can help to determine if the fluid is cerebrospinal fluid (CSF) or not. CSF is the fluid that surrounds and protects the brain and spinal cord, and it can leak from the nose or ears after a head injury. A halo test involves placing a drop of the fluid on a piece of filter paper or gauze and observing the color and shape of the stain. If the fluid is CSF, it will form a yellowish ring around a central blood spot, creating a halo effect.

Choice B reason: Taping a sterile gauze pad under the nose and monitoring the amount of fluid is not the initial intervention that the nurse should perform, as it does not help to identify the type of fluid. It may also increase the risk of infection or pressure on the brain if the fluid is CSF.

Choice C reason: Documenting the presence of rhinorrhea is not the initial intervention that the nurse should perform, as it does not help to diagnose or treat the condition. Rhinorrhea is the medical term for a runny nose, which can have many causes, such as allergies, colds, or sinus infections. It is not a specific sign of a head injury or CSF leakage.

Choice D reason: Informing the physician of the assessment is an important intervention that the nurse should perform, but not the initial one. The nurse should first confirm if the fluid is CSF or not, as this can affect the management and prognosis of the patient. The nurse should then report the findings and the patient's vital signs, neurological status, and other relevant information to the physician.