<prompt> A 45 year old male known case of diabetes presents with nausea , multiple episodes of vomiting and abdominal pain.He is stuporous , having blood glucoselevel of 402 mg and on urine examination Ketone bodies are detected.He is having tachycardina along with ohostatic hypotension. On lab investigation,his potassium levels are 3 meqL.The next best step in the management will be:Manage hypokalemia-Repeat serum K levels- IV fluids and sta IV regular insulinIV fluids-give IV regular insulin and lastly manage hypokalemiaGive IV regular insulin along with K - IV fluids after the K level is normalIV fluids - give Lente insulin and side by side manage hypokalemia  <response>: This is a case of diabetic ketoacidosis DKA- Patients serum K level is 3.3 meqL,In such cases K Level need to be corrected first, even before administering insulin. So next best steps in the management of this patient include: Correct hypokalemia-Repeat Klevels in serum-Give IV regular insulin after K level is 3.3 meqL Even during the treatment with insulin and fluids, Hypokalemia worsens because of: Insulin mediated potassium entry into cells Settlement of acidosis K loss in urine Therefore if we wont correct hypokalemia 3.3 meqL in case of DKA, it will aggravate with the insulin and fluids if given initially. Note-Nausea and severe vomiting are due to the ketonemia which trigger vomiting center- CTZ 