<prompt> Two most impoant tests to be done in a comatose patient with blood glucose of 750 mgdl will be -Sr. creatinineSr. sodiumCSF examinationBlood pH  <response>: Comatose patients with blood glucose level of 750 mgdl suggests the possibility of hyperglycemic hyperosmolar state . Lab abnormality in this is marked hyperglycemia, hyperosmolarity, prerenal azotemia. Comatose patients with hyperglycemia is also seen in diabetic ketoacidosis. Thus blood ph to detect acidosis and serum creatinine for azotemia are most impoant investigations. 