Final answer:
During pregnancy, management of preGentational type 1 diabetes mellitus involves regular blood glucose monitoring, consuming a high-carbohydrate diet, and taking insulin injections as prescribed.
Step-by-step explanation:
Type 1 diabetes mellitus is an autoimmune disease where the beta cells of the pancreas do not produce insulin, so synthetic insulin must be administered. During pregnancy, management of diabetes involves monitoring blood glucose levels regularly, consuming a high-carbohydrate diet to maintain stable blood glucose levels, and taking insulin injections as prescribed by a doctor. Skipping insulin injections should be avoided as it can result in uncontrolled blood glucose levels which can be harmful to both the mother and the baby.