Hypoglycemia Management and Risks

Classification and Symptoms

Hypoglycemia is classified into three levels: Level 1 (Glucose <70 mg/dL but ≥54 mg/dL), Level 2 (Glucose <54 mg/dL), and Level 3 (Severe hypoglycemia) 3
Common symptoms of hypoglycemia include autonomic symptoms (shakiness, irritability, hunger, tachycardia) and neuroglycopenic symptoms (confusion, cognitive dysfunction, seizures, coma) 4, 5, 6

Severe hypoglycemia poses immediate life-threatening risks, including loss of consciousness, seizures, coma, and death 6, 4
Increased risk of falls and physical injuries is associated with severe hypoglycemia 1

Recurrent hypoglycemia can lead to hypoglycemia unawareness (reduced ability to recognize symptoms) and potential cognitive impairment and increased risk of dementia, particularly in older adults 1, 2, 6

For conscious patients, administer 15-20g of glucose or any carbohydrate containing glucose, and recheck blood glucose after 15 minutes; repeat treatment if hypoglycemia persists 4, 5, 7
For unconscious patients or those unable to take oral carbohydrates, administer glucagon via injection or intranasal route 7
Individualize glycemic targets based on hypoglycemia risk, and consider relaxing glycemic targets in patients with hypoglycemia unawareness or history of severe hypoglycemia 6, 8, 2, 4

Implement frequent self-monitoring of blood glucose (SMBG) and consider continuous glucose monitoring (CGM) for high-risk patients 2, 7
Teach patients to recognize situations that increase hypoglycemia risk (fasting, exercise, sleep) and educate on balancing insulin, carbohydrate intake, and exercise 2, 7
Prescribe glucagon for all patients at risk for severe hypoglycemia and train family members, caregivers, school personnel, and others in close contact on glucagon administration 7, 4, 5

For patients with hypoglycemia unawareness or recent severe hypoglycemia, raise glycemic targets for at least several weeks to reverse hypoglycemia unawareness and implement strict avoidance of hypoglycemia 6, 4, 2
Patients should check glucose before driving and at regular intervals during long drives, and keep glucose meter and rapid-acting glucose treatment in the car 4

Inadequate follow-up after a severe hypoglycemic event can lead to repeated episodes; always adjust treatment regimen after such events 6
Failure to increase monitoring frequency in high-risk situations (illness, exercise, fasting) can lead to undetected hypoglycemia 2, 7
Protein-rich treatments should not be used to treat hypoglycemia as they may increase insulin response without raising glucose 7