Diabetes Management

Initial Therapy and Lifestyle Modifications

The American College of Physicians recommends metformin as first-line therapy for most patients with type 2 diabetes at diagnosis, alongside comprehensive lifestyle modifications, unless contraindicated, with efficacy of 1.0-2.0% HbA1c reduction, low hypoglycemia risk, neutral weight effect, and low cost 1, 2, 3, 4, 5, 6
Patients with type 2 diabetes should receive individualized medical nutrition therapy, preferably from a registered dietitian, and engage in at least 150 minutes of moderate-intensity aerobic activity per week, with resistance training at least twice weekly 1, 7, 8
Educate patients on situations that increase hypoglycemia risk and modify treatment regimens for severe or frequent hypoglycemia 1
All patients should participate in diabetes self-management education and support, with a focus on problem-solving skills for all aspects of diabetes management 1, 9, 7

For gestational diabetes, provide adequate calorie intake based on National Academy of Medicine recommendations, with a nutrition plan that includes minimum 175g carbohydrate, minimum 71g protein, 28g fiber, emphasis on monounsaturated and polyunsaturated fats, and limited saturated fats and avoidance of trans fats 10
Exercise interventions (20-50 min/day, 2-7 days/week) have shown improvements in glucose outcomes for patients with gestational diabetes, with target fasting glucose <95 mg/dL, one-hour postprandial glucose <140 mg/dL, and two-hour postprandial glucose <120 mg/dL 10
Insulin is the first-line agent for gestational diabetes requiring medication in the U.S., while metformin and glyburide are not recommended as first-line treatments due to placental crossing and concerns about long-term safety for offspring 10

Use empowering language that is neutral, nonjudgmental, strength-based, respectful, and person-centered, and assess patients' self-efficacy, which is related to improved diabetes self-management and treatment outcomes 11, 12
Implement the Chronic Care Model, which includes six core elements: delivery system design, self-management support, decision support, clinical information systems, community resources, and health systems, to manage patients with chronic conditions like hypertension and diabetes 9, 13
Team-based care, including physicians, nurses, pharmacists, dietitians, and other providers, should be implemented to provide comprehensive care, with interprofessional collaboration and clear roles 9, 12, 14

The following medications have the corresponding efficacy and safety profiles:

Medication	Efficacy	Hypoglycemia Risk	Weight Effect	Cost
Metformin	1.0-2.0% HbA1c reduction	Low	Neutral	Low
Sulfonylurea	High	High	Moderate weight gain	Low
Thiazolidinedione	High	Low	Weight gain	High
DPP-4 inhibitor	Intermediate	Low	Neutral	High
GLP-1 receptor agonist	High	Low	Weight loss	High
SGLT2 inhibitor	Moderate	Low	Weight loss	High

2, 15, 3, 4, 6, 16

Consider GLP-1 receptor agonists or SGLT2 inhibitors with proven cardiovascular benefit for patients with established ASCVD or at high risk, and proceed to triple therapy by adding a third agent with a different mechanism of action 17, 2, 6, 16

Monitor HbA1c every 3 months until target is reached, then at least every 6 months, with individualized HbA1c targets (generally <7.0%) based on patient factors, and consider post-prandial glucose monitoring (target <180 mg/dL) if pre-prandial levels are in range but A1C remains elevated 3, 18, 19
Track key metrics such as A1C, blood pressure, and lipids to monitor disease progression and complications, and evaluate weight at least every 3 months during active weight management 20, 21
Regular follow-up visits should include assessment of medication-taking behavior and side effects, laboratory evaluation to assess glycemic targets, screening for complications and comorbidities, and adjustment of treatment plan as needed 22, 23

Consider cardiovascular, renal, and liver benefits of newer agents, such as GLP-1 RAs and SGLT2 inhibitors, which have minimal risk of hypoglycemia when used as monotherapy 17, 24, 6
Blood pressure control (<130/80 mm Hg) is recommended, with daily aspirin regimen for patients with established CVD reducing coronary heart disease risk by 20-25% 25
Annual dilated eye examinations are recommended, starting 3-5 years after onset of type 1 diabetes, and regular screening for microalbuminuria to detect early nephropathy is suggested 25