Managing Hyperglycemia in COPD Patients on Prednisone
For a patient with COPD starting prednisone for an exacerbation, you should place orders for blood glucose monitoring (fasting and afternoon/evening checks), anticipate afternoon-evening hyperglycemia requiring targeted treatment, and plan for a short 5-day course of prednisone 30-40 mg daily to minimize glycemic complications. 1, 2
Specific Orders to Place
1. Corticosteroid Regimen
- Prednisone 30-40 mg orally daily for 5 days 3, 1
- Oral route is preferred over IV (equally effective with fewer adverse effects and lower cost) 1, 4
- Do NOT extend beyond 5-7 days—longer courses increase adverse effects without additional benefit 1, 5
2. Glucose Monitoring Protocol
- Point-of-care glucose checks: fasting (0600-0800h) and afternoon/evening (1200-2400h) 2
- The afternoon/evening monitoring is critical because prednisone predominantly causes hyperglycemia between 1200-2400h, not in the morning 2
- In patients without known diabetes on prednisone 30 mg/d, 53% will experience glucose ≥200 mg/dL (11.1 mmol/L) 2
- Hyperglycemia requiring treatment occurs in approximately 15% of patients on systemic corticosteroids 6
3. Glycemic Management Orders
- If glucose >180 mg/dL: Initiate short-acting insulin or adjust existing diabetes medications 2
- Target afternoon/evening hyperglycemia specifically—this is when prednisone causes the most significant glucose elevation 2
- Consider rapid-acting insulin with lunch and dinner rather than long-acting basal insulin, given the circadian pattern 2
- For patients with known diabetes: expect mean glucose 1200-2400h to reach 189 mg/dL vs 142 mg/dL in non-diabetics 2
4. Bronchodilator Orders
- Short-acting β-agonist (albuterol) and/or ipratropium MDI with spacer as needed 3
- Consider adding long-acting bronchodilator if not already on one 3
5. Antibiotic Consideration
- Initiate antibiotics if ≥2 of the following: increased breathlessness, increased sputum volume, purulent sputum 3
- Choice based on local resistance patterns: amoxicillin/clavulanate or respiratory fluoroquinolones for outpatients 3
Key Clinical Pitfalls to Avoid
Steroid Duration Error
- Never continue systemic corticosteroids beyond 14 days for a single exacerbation 1
- The 5-day course is non-inferior to 14-day treatment for re-exacerbation rates (37.2% vs 38.4%) but significantly reduces total steroid exposure (379 mg vs 793 mg cumulative dose) 5
Glucose Monitoring Timing Error
- Don't rely solely on fasting glucose—you'll miss the hyperglycemia 2
- Morning glucose (2400-1200h) in non-diabetics on prednisone averages only 112 mg/dL, but afternoon/evening (1200-2400h) averages 142 mg/dL 2
Unnecessary IV Steroids
- Avoid IV corticosteroids unless patient cannot tolerate oral route 1
- A study of 80,000 non-ICU patients showed IV corticosteroids associated with longer hospital stays and higher costs without benefit 1
Reassuring Safety Data
- Corticosteroid dose and resulting hyperglycemia were NOT associated with increased 30-day or 31-90-day readmission rates in a large retrospective study 7
- This suggests that while hyperglycemia should be monitored and treated, it doesn't necessarily worsen overall COPD outcomes when managed appropriately 7
- However, hyperglycemia still requires treatment for patient comfort and to avoid acute complications 6
Additional Monitoring
- Check inhaler technique and consider spacer devices 3
- Assess for treatment response: improved dyspnea, reduced sputum, improved exercise tolerance 3
- If available, blood eosinophil count ≥2% predicts better corticosteroid response (11% treatment failure vs 66% with placebo in low-eosinophil patients) 1