A 54-year-old female with breast cancer is brought to the em…
A 54-year-old female with breast cancer is brought to the emergency room with progressive confusion, anorexia, constipation, weight loss, and weakness. Vital signs are temperature 36.7°C, BP 94/57 mm Hg, HR 87 beats/min, and SaO2 96% on RA. On examination, she is drowsy but easily arousable and oriented to person. Her neurologic examination is otherwise unremarkable. Lab studies are notable for a creatinine level of 1.78 mg/dL (baseline 0.8 mg/dL) and serum calcium of 13.7 mg/dL. What is the most appropriate initial treatment?