Hyperglycemia management in clinical practice
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Inpatient Hyperglycemia Management: Clinical Practice Guidelines and Monitoring
Managing hyperglycemia in hospitalized adults is a common challenge, with guidelines consistently recommending regular blood glucose monitoring for all patients with diabetes and most patients with admission hyperglycemia. Capillary blood glucose monitoring is the standard, though some guidelines now discuss the use of continuous glucose monitoring, which can help identify hypoglycemia and improve glycemic control, though evidence for its use remains limited and of low certainty 1234+1 MORE.
Glycemic Targets in Hospitalized Patients
Most high-quality guidelines recommend an upper blood glucose target of 180 mg/dL for hospitalized adults, with some suggesting a lower limit of either 100 mg/dL or 140 mg/dL. There is consensus that very tight glycemic control increases the risk of hypoglycemia and is not recommended. Instead, moderate and individualized targets are preferred, especially in patients with comorbidities or in the perioperative setting 1234+1 MORE.
Insulin Therapy: Basal-Bolus Regimens and Avoidance of Sliding Scale
Basal-bolus insulin regimens, with or without correctional insulin, are the most commonly recommended approach for treating inpatient hyperglycemia. Sliding scale insulin alone is discouraged due to its association with poorer glycemic control. For patients receiving glucocorticoids, a combination of NPH and basal-bolus insulin may be more effective. The use of oral diabetes medications in the hospital is inconsistent across guidelines, and their continuation is often not recommended due to safety concerns 1234+1 MORE.
Special Considerations: Comorbidities, Elderly, and Nutrition
Guidelines highlight the need for individualized management in patients with comorbidities, elderly adults, and those with irregular feeding or on enteral/parenteral nutrition. Special scenarios such as stress hyperglycemia, corticosteroid treatment, and fasting require tailored insulin regimens and close monitoring. There is limited guidance on managing diabetes in older adults and on transitioning to home medications at discharge 124.
Perioperative and Surgical Hyperglycemia Management
Perioperative hyperglycemia is linked to worse clinical outcomes, including increased risk of complications and mortality. Moderate glycemic targets are recommended during the perioperative period, and insulin therapy is preferred for managing elevated blood glucose. Preoperative HbA1c levels below 7% are associated with better outcomes, but the evidence is of low certainty. The use of caloric oral fluids before surgery does not significantly affect outcomes 510.
Patient-Centered and Personalized Approaches
Recent guidelines and position statements emphasize the importance of individualized, patient-centered care. Treatment targets and strategies should be tailored based on patient characteristics, comorbidities, and preferences. Shared decision-making is crucial, especially given the low certainty of evidence for many management decisions. In type 2 diabetes, newer agents such as GLP-1 receptor agonists and SGLT2 inhibitors are recommended for patients at high cardiovascular or renal risk, independent of baseline HbA1c 679.
Education and Discharge Planning
Inpatient diabetes education has been shown to improve glycemic control after discharge and reduce hospital readmissions. However, guidance on transitioning from hospital to home medications is limited, and more research is needed to optimize care transitions 125.
Conclusion
There is broad agreement on the need for regular blood glucose monitoring and the use of basal-bolus insulin regimens for inpatient hyperglycemia management. Glycemic targets should be moderate and individualized, with special attention to comorbidities and perioperative care. Patient-centered approaches and education are essential, but gaps remain in guidance for transitions of care and use of non-insulin therapies in the hospital. Ongoing research and shared decision-making are key to improving outcomes in this complex patient population.
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