Which is an example of hypertonic intravenous (IV) fluid?

The nurse is caring for a patient with pneumonia and fulminant pulmonary arterial hypertension. The patient is intubated and mechanically ventilated receiving inhaled nitric oxide (iNO). Additionally, the patient has a central line with multiple continuous infusions, including norepinephrine, vecuronium, morphine, and propofol. During the shift, the nurse begins to have difficulty breathing, a dry throat, syncope, and chest pain. Which action does the nurse take first?

The patient with seizures has been prescribed carbamazepine (Tegretol). Which medication, if found on the patient's current medication list, prompts the nurse to hold the medication and contact the provider for clarification?