Most useful drug to treat a case of DKA is (LQ)
Insulin: This is the case of DKA and drug of choice is always regular insulin intravenous.
1). Fluids → 0.9% saline.
2). Insulin → Regular Insulin is given I/V in DKA. It is not given subcutaneous.
3). Treat precipitating events → Noncompliance, infection by antibiotics.
4). K+ replacement → Initially when patient comes initially he is hyperkalemic, later on when patient is treated with insulin, serum potassium level goes down and may require potassium replacement.
5). Injection HCO3 I/V if Ph <7