1.A 55-year-old man with CKD presents with nausea, vomiting, and altered mental status. His labs show: BUN: 110mg/dL, Creatinine: 8.5mg/dL, Serum potassium: 6.2mmol/L, ECG: Peaked T waves and pH: 7.34. What is the most appropriate next step?
Begin emergency dialysis
Observe and repeat labs in 6 hours
Increase fluid intake
Administer oral potassium binders
2.A 35-year-old female with Palpitations, heat intolerance, and weight loss. TSH is undetectable, and free T4 is elevated. Radioactive iodine uptake (RAIU) is diffusely increased. What is the best initial treatment?
Radioactive iodine ablation
Propranolol
Thyroidectomy
Methimazole
3.A 20-year-old female with type 1 diabetes presents with nausea, vomiting and abdominal pain. On exam: BP 90/60, deep rapid breathing (Kussmaul respiration). Urine shows ketones, and blood glucose is 480mg/dL. What is the first priority in management?