A 16 year old adolescent with type 1 diabetes mellitus is in…

A 16 year old adolescent with type 1 diabetes mellitus is in the nurse’s office before & after lunch. The preprandial blood glucose (BG) is 136 g/dL. The adolescent reports eating 45 Gms of carbohydrate (CHO) at lunch. The correctional factor indicated by the endocrinologist is: 1 unit rapid acting Lispro for BG 140-160; 2 units for BG 160-180.  The insulin to CHO ratio: 1 unit/15 Gms CHO.  What insulin dose would the nurse expect the adolescent to self administer now?