A 65-year-old diabetic presents with altered mental status, fruity breath, and Kussmaul respiration. Vitals show hypotension and tachypnea. Labs: Glucose 490 mg/dL, pH 7.12, HCO₃⁻ 10, K⁺ 5.5.
Q: What’s the next best step in management?
a) Give insulin bolus
b) Start IV fluids
c) Administer sodium bicarbonate
d) Give calcium gluconate