Review Question - QID 212748

A 55-year-old man presents to the emergency department with a headache, blurry vision, and abdominal pain. He states that his symptoms started several hours ago and have been gradually worsening. His temperature is 99.3°F (37.4°C), blood pressure is 222/128 mmHg, pulse is 87/min, respirations are 16/min, and oxygen saturation is 99% on room air. Physical exam is notable for an uncomfortable and distressed man. The patient is started on an esmolol and a nitroprusside drip thus lowering his blood pressure to 200/118 mmHg. The patient states that he feels better, but complains of feeling warm and flushed. The next morning, the patient seems confused and states his headache has resurfaced. Laboratory values are ordered as seen below.

Serum:
Na+: 138 mEq/L
Cl-: 101 mEq/L
K+: 4.4 mEq/L
HCO3-: 17 mEq/L
BUN: 31 mg/dL
Glucose: 199 mg/dL
Creatinine: 1.4 mg/dL
Ca2+: 10.2 mg/dL

Which of the following is the best treatment for this patient?