The nurse easily and quickly assesses changes in level of consciousness (eye opening, verbal responses motor response) using which neurological exams?

A) Respiratory acidosis:
Respiratory acidosis occurs when there is an accumulation of carbon dioxide (CO2) in the blood, leading to a decrease in pH. In the given blood gas values, the PaCO2 is 28 mmHg, which is lower than the normal range (35-45 mmHg), indicating that CO2 is being exhaled more than usual, not accumulating.

B) Metabolic acidosis:
Metabolic acidosis results from a decrease in bicarbonate (HCO3-) or an increase in acid in the body. However, in the provided values, the bicarbonate (HCO3-) is normal at 24 mEq/L, and the pH is elevated at 7.51, indicating alkalosis rather than acidosis

C) Metabolic alkalosis:
Metabolic alkalosis occurs when there is an increase in bicarbonate levels or excessive loss of acids, often associated with vomiting or diuretic use. However, in this case, the bicarbonate level (HCO3-) is normal, and the pH is more consistent with alkalosis due to respiratory factors, not metabolic causes.

D) Respiratory alkalosis:
Respiratory alkalosis occurs when there is excessive exhalation of CO2, leading to a rise in blood pH (alkalosis). The pH is 7.51, which is above the normal range (7.35-7.45), indicating alkalosis. Additionally, the PaCO2 is low at 28 mmHg, which suggests that the client is hyperventilating and exhaling too much CO2, confirming respiratory alkalosis as the correct interpretation.

A) Insert an oral airway and suction as needed:
This is generally not the first intervention for impaired glossopharyngeal (CN IX) and vagus nerve (CN X) function. The glossopharyngeal and vagus nerves play a critical role in swallowing, gag reflex, and the ability to protect the airway. While an airway might be necessary in cases of severe dysfunction, withholding food and fluids is a more immediate and specific concern when these cranial nerves are impaired, as it prevents aspiration risk.

B) Withhold oral fluids and food:
The glossopharyngeal nerve (CN IX) is involved in taste and swallowing, and the vagus nerve (CN X) is crucial for the motor control of the pharynx and larynx, which are involved in swallowing and protecting the airway. Dysfunction of these nerves can lead to difficulty swallowing (dysphagia), increased risk for aspiration, and the inability to protect the airway effectively. Withholding oral fluids and food helps prevent aspiration, a major risk when these nerves are impaired, until further assessment and management can be done.

C) Apply artificial tears to protect the cornea:
While it is important to protect the cornea in patients with cranial nerve dysfunction (specifically the facial nerve, CN VII), this does not directly relate to the glossopharyngeal (CN IX) and vagus (CN X) nerves. The glossopharyngeal and vagus nerves affect swallowing and airway protection, not eye lubrication. Applying artificial tears would not address the risk associated with impaired swallowing or airway protection.

D) Speak clearly while facing the patient:
Although speaking clearly and facing the patient might be helpful for communication, especially if the patient has difficulty with speech due to nerve impairment, it does not address the immediate and more critical concern of impaired swallowing and airway protection associated with dysfunction of the glossopharyngeal and vagus nerves. The primary concern is ensuring the patient is not at risk for aspiration while eating or drinking.