Final answer:
A decreased fasting blood glucose level indicates that a type 2 diabetes mellitus patient's care plan is effective, as the goal of treatment is to reduce high blood sugar levels.
Step-by-step explanation:
The laboratory findings that indicate a client's plan of care for type 2 diabetes mellitus is effective would be c) Decreased fasting blood glucose. In diabetes, high blood glucose levels, or hyperglycemia, can be diagnosed when fasting blood glucose levels are above normal. Effective management and treatment aim to reduce these elevated levels. Normal fasting blood glucose levels are below 100 mg/dL, with levels between 100 and 125 mg/dL considered pre-diabetes, and levels higher than 125 mg/dL indicating diabetes. After a meal, insulin is released to decrease blood glucose by converting excess glucose to glycogen in the liver. In type 2 diabetes, cells may become resistant to insulin, causing blood glucose levels to remain elevated. Patients who successfully manage their condition either through lifestyle changes or with medication will show a decrease in fasting blood glucose levels which signifies progress in treatment