- βUnconsciousness, seizures, or inability to swallow are immediate 911 triggers β never wait to see if these symptoms resolve on their own
- βBystanders should administer glucagon if trained and available, then call 911 without delay
- βA written emergency action plan, medical ID, and CGM with low alerts can prevent severe episodes and save lives
What Is Severe Hypoglycemia?
Hypoglycemia occurs when blood sugar drops below 70 mg/dL, but severe hypoglycemia is a medical emergency defined by the inability to treat yourself due to confusion, loss of consciousness, or seizures. At this stage, waiting to see if symptoms improve is not an option β every minute matters.
Understanding the difference between mild low blood sugar and a true emergency can literally save your life or the life of someone you love.
Warning Signs That Demand Immediate 911 Call
Call emergency services immediately if the person with diabetes:
- Is unconscious or cannot be awakened
- Is having a seizure
- Is combative, extremely confused, or unresponsive to verbal commands
- Cannot safely swallow food or liquid
- Has received glucagon and has not responded within 15 minutes
- Has a blood sugar below 54 mg/dL with worsening symptoms
Do not attempt to give food or juice to someone who is unconscious β this creates a serious choking risk.
Stages of Hypoglycemia: Know the Progression
Mild (70β54 mg/dL)
Shakiness, sweating, hunger, and irritability. Treatable with the 15-15 rule: consume 15 grams of fast-acting carbohydrates, wait 15 minutes, and recheck blood sugar.
Moderate (54β40 mg/dL)
Difficulty concentrating, slurred speech, severe confusion, and weakness. The person may still be conscious but needs immediate assistance. Glucagon or a glucose gel applied to the gums may be appropriate.
Severe (Below 40 mg/dL or with loss of consciousness)
This is a 911 situation. Administer glucagon if available and trained, and call for emergency services without delay.
Before You Call: What Bystanders Should Do
- Stay calm and do not leave the person alone
- Turn an unconscious person on their side to prevent choking
- Administer nasal glucagon (Baqsimi) or injectable glucagon if available and you are trained to use it
- Tell the 911 operator the person has diabetes and is having a severe low blood sugar episode
- Gather any medications or devices to show paramedics
Building Your Emergency Preparedness Plan
Every diabetic should have an established emergency action plan. This includes wearing a medical ID bracelet, keeping fast-acting glucose supplies accessible at all times, and ensuring family members, coworkers, and close friends know how to recognize and respond to severe hypoglycemia.
At mdsdiabetes.com, you can find comprehensive resources on emergency preparedness, including guidance on glucagon kits, continuous glucose monitors that alert to dangerous lows, and diabetes management supplies designed to reduce your risk of severe episodes.
Preventing Severe Hypoglycemia
- Never skip meals when taking insulin or sulfonylureas
- Check blood sugar before driving, exercise, or sleep
- Wear a continuous glucose monitor (CGM) with low-alert settings
- Review your medication doses with your care team regularly
- Carry fast-acting glucose every time you leave the house
After the Emergency
Once stabilized, follow up with your healthcare provider within 24 hours. A severe episode signals that your current management plan may need adjustment. Document what happened, the time, your last meal, and your medication doses to help your provider identify the cause.
Severe hypoglycemia is frightening, but with the right preparation, you can respond effectively and reduce the risk of it happening again.