What are the treatment steps for hypoglycemia (low blood sugar)?

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Treatment of Hypoglycemia

For hypoglycemia treatment, administer 15-20g of fast-acting carbohydrates to conscious patients who can swallow, and use glucagon for unconscious patients or those unable to swallow. 1

Classification of Hypoglycemia

The American Diabetes Association classifies hypoglycemia into three levels:

Level Blood Glucose Description Treatment
1 <70 mg/dL and ≥54 mg/dL Mild hypoglycemia 15-20g oral glucose
2 <54 mg/dL Moderate hypoglycemia 15-20g oral glucose
3 Any level Severe event with altered mental/physical status requiring assistance Glucagon injection

Treatment Algorithm for Hypoglycemia

For Conscious Patients (Level 1-2 Hypoglycemia)

  1. Administer 15-20g of fast-acting carbohydrates 2, 1

    • Pure glucose is preferred (glucose tablets)
    • Any form of carbohydrate containing glucose will work
    • Avoid carbohydrates high in protein as they may increase insulin response without raising glucose 2
  2. Recheck blood glucose after 15 minutes 2, 1

    • If hypoglycemia persists, repeat treatment with 15-20g carbohydrates
  3. Once blood glucose normalizes, provide a meal or snack 2

    • This prevents recurrence of hypoglycemia
    • Include both fast-acting and long-acting carbohydrates (e.g., crackers and cheese or a meat sandwich) 3

For Unconscious Patients or Those Unable to Swallow (Level 3 Hypoglycemia)

  1. Administer glucagon 2, 1, 3

    • For adults and children >44 lbs (20 kg): 1mg dose
    • For children <44 lbs (20 kg): 0.5mg dose (or 20-30 mcg/kg)
    • Available forms:
      • Traditional injectable glucagon (requires reconstitution)
      • Ready-to-use injectable solutions
      • Intranasal glucagon 4, 5
  2. Position patient on their side to prevent aspiration 1, 3

  3. If no response within 15 minutes, administer second dose of glucagon and seek emergency medical assistance 3

  4. Once patient regains consciousness and can swallow, provide oral carbohydrates 1, 3

Post-Hypoglycemia Management

  1. Monitor blood glucose every 1-2 hours until stable 1

  2. Identify and address the cause of hypoglycemia 1

    • Insulin dosing errors
    • Missed/delayed meals
    • Unexpected physical activity
    • Alcohol consumption
    • Medication interactions
    • Reduced oral intake or vomiting
  3. Notify healthcare provider 3

    • All severe hypoglycemic events should be reported to the patient's doctor

Prevention Strategies

  1. For patients with recurrent hypoglycemia:

    • Raise glycemic targets temporarily to reverse hypoglycemia unawareness 2, 1
    • Review and potentially reduce insulin or insulin secretagogue doses 1
    • Consider transitioning from intermediate-acting insulin to long-acting insulins 1
  2. Practical preventive measures:

    • Carry fast-acting carbohydrates at all times 1, 3
    • Consider medical alert identification 1
    • Consume a bedtime snack if blood glucose is low before sleep 1
    • Always consume food with alcohol 1
    • Monitor blood glucose before, during, and after exercise 1
  3. Glucagon prescription:

    • Prescribe glucagon for all individuals at significant risk of severe hypoglycemia 2, 1
    • Train family members, caregivers, school personnel, and others in close contact with the patient on glucagon administration 2, 1

Common Pitfalls to Avoid

  1. Treatment errors:

    • Using carbohydrates high in protein or fat, which may delay glucose absorption 2
    • Using insufficient amounts of carbohydrates for treatment 6
    • Failing to provide follow-up meal/snack after initial treatment 2
  2. Glucagon-related errors:

    • Not having glucagon readily available for high-risk patients 1
    • Family members/caregivers not trained in glucagon administration 1
    • Using expired glucagon 3
  3. Management errors:

    • Not identifying and addressing the underlying cause of hypoglycemia 1
    • Not adjusting treatment regimens after hypoglycemic events 2, 1
    • Not raising glycemic targets temporarily after severe hypoglycemia 2

By following this structured approach to hypoglycemia management, healthcare providers can effectively treat hypoglycemic episodes while minimizing complications and preventing recurrence.

References

Guideline

Hypoglycemia Management

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Therapeutic Use of Intranasal Glucagon: Resolution of Hypoglycemia.

International journal of molecular sciences, 2019

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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