If it is determined that insulin is to be used in the field following the administration of fluids for diabetic ketoacidosis, the standard dosage of regular insulin is:

a. 5–10 units administered IV
b. An infusion of 5 units per minute
c. 0.5–1.0 units subcutaneously
d. Insulin should never be administered in the prehospital setting

a
Rationale: a. The standard dosage of insulin, if necessary, is 5–10 units of regular insulin administered IV, followed by an infusion of 0.1 unit/kg/hour.