Severe Hypoglycemia: How to Prepare for and Respond to a BG Emergency

30 Aug 2025

Severe Hypoglycemia: How to Prepare for and Respond to a BG Emergency Severe hypoglycemia, or dangerously low blood sugar, is a frightening but potent...

Severe Hypoglycemia: How to Prepare for and Respond to a BG Emergency

Severe hypoglycemia, or dangerously low blood sugar, is a frightening but potentially manageable complication for people with diabetes, particularly those using insulin or certain oral medications. It’s critical to understand what causes it, how to recognize the symptoms, how to prepare for it, and how to respond effectively to prevent serious consequences, including loss of consciousness, seizures, or even death. This article will provide a comprehensive guide on managing severe hypoglycemia, empowering you to act quickly and confidently in a blood glucose (BG) emergency.

Understanding Severe Hypoglycemia

Hypoglycemia is generally defined as blood glucose levels below 70 mg/dL. Severe hypoglycemia, however, is characterized by a blood glucose level so low that the individual requires assistance from another person to recover.

Causes of Severe Hypoglycemia:

  • Excess Insulin: Taking too much insulin relative to food intake or activity level is a primary cause.
  • Missed or Delayed Meals: Skipping meals or eating significantly less than usual without adjusting medication.
  • Intense Exercise: Unplanned or prolonged physical activity can deplete glucose stores.
  • Alcohol Consumption: Alcohol can interfere with the liver's ability to release glucose, especially when consumed without food.
  • Certain Medications: Sulfonylureas, a class of diabetes medication, can increase the risk of hypoglycemia.
  • Kidney or Liver Disease: Impaired kidney or liver function can affect glucose metabolism and medication clearance.
  • Hormone Deficiencies: Conditions affecting hormones like cortisol or glucagon can lead to hypoglycemia.

Understanding your individual risk factors is essential for proactive management. Discuss these with your healthcare provider to develop a personalized hypoglycemia prevention plan.

Recognizing the Warning Signs: Early Symptoms of Hypoglycemia

Early recognition of hypoglycemia symptoms is critical to prevent a severe episode. Symptoms can vary from person to person, but common warning signs include:

  • Shakiness or Trembling: Feeling unsteady or shaky.
  • Sweating: Unexplained perspiration, often cold and clammy.
  • Dizziness or Lightheadedness: Feeling faint or unsteady on your feet.
  • Rapid Heartbeat: Increased heart rate or palpitations.
  • Hunger: An intense feeling of hunger, even after eating recently.
  • Irritability or Anxiety: Feeling anxious, nervous, or unusually irritable.
  • Confusion or Difficulty Concentrating: Trouble thinking clearly or focusing on tasks.
  • Blurred Vision: Seeing double or having difficulty focusing.

Table: Common Hypoglycemia Symptoms and Their Potential Severity

| Symptom | Severity | Description | | :----------------------- | :------------ | :--------------------------------------------------------------------- | | Shakiness | Mild | Trembling hands or body | | Sweating | Mild to Moderate | Cold, clammy perspiration | | Dizziness | Mild to Moderate | Feeling lightheaded or unsteady | | Rapid Heartbeat | Moderate | Racing or pounding heart | | Hunger | Mild | Intense feeling of needing to eat | | Irritability | Mild to Moderate | Unexplained mood swings or impatience | | Confusion | Moderate to Severe | Difficulty thinking clearly, disorientation | | Blurred Vision | Moderate | Difficulty focusing or seeing clearly | | Loss of Coordination | Severe | Difficulty walking or performing tasks requiring fine motor skills | | Seizures | Severe | Uncontrolled muscle contractions | | Loss of Consciousness | Severe | Unresponsiveness to stimuli |

Paying attention to these early symptoms and acting quickly can prevent hypoglycemia from escalating to a severe level. It’s also important to note that some individuals may experience hypoglycemia unawareness, where they don't feel the typical warning signs until their blood glucose is dangerously low. This condition requires specific management strategies discussed with your healthcare provider.

Preparing for a BG Emergency: Developing a Hypoglycemia Action Plan

Proactive preparation is key to effectively managing severe hypoglycemia. Here's how to create a robust hypoglycemia action plan:

  1. Talk to Your Healthcare Provider:
    • Discuss your individual risk factors for hypoglycemia.
    • Review your medication regimen, insulin dosages, and timing.
    • Learn how to adjust your medication based on meals, exercise, and illness.
    • Ask about continuous glucose monitoring (CGM) systems, which can alert you to trends in blood glucose levels.
  2. Create a Written Action Plan:
    • Clearly outline the steps to take when you suspect hypoglycemia.
    • Include contact information for your healthcare provider, emergency services, and close contacts.
    • Specify the type and amount of fast-acting carbohydrate to consume for mild to moderate hypoglycemia.
    • Detail the steps for administering glucagon in case of severe hypoglycemia.
  3. Assemble a Hypoglycemia Emergency Kit:
    • Fast-acting carbohydrates: Glucose tablets, glucose gel, juice boxes, or regular (non-diet) soda.
    • Glucagon emergency kit: Injectable or nasal glucagon (ensure you and your loved ones know how to use it).
    • Blood glucose meter and testing supplies.
    • Identification: Medical ID bracelet or necklace indicating you have diabetes.
    • Copy of your hypoglycemia action plan.
  4. Educate Your Family, Friends, and Colleagues:
    • Explain the symptoms of hypoglycemia and how to recognize when you need help.
    • Show them how to use the glucagon emergency kit and when to administer it.
    • Provide them with a copy of your hypoglycemia action plan.
    • Ensure they know your emergency contact information.
  5. Regularly Monitor Your Blood Glucose:
    • Check your blood glucose levels as directed by your healthcare provider.
    • Monitor more frequently during times of illness, stress, or changes in activity level.
    • Consider using a CGM system to track your blood glucose trends in real-time.
  6. Wear a Medical ID:
    • Wear a medical ID bracelet or necklace that clearly states you have diabetes and are prone to hypoglycemia.
    • Include emergency contact information on your ID.
  7. Carry Fast-Acting Carbohydrates: Always have a readily accessible source of fast-acting carbohydrates with you. Keep some in your car, at work, and at home.
  8. Check Blood Sugar Before Driving: Always check your blood sugar before driving, and every 2 hours on long trips. Keep fast-acting glucose in your car.

Example of a Hypoglycemia Action Plan Template

Related reading: What To Do During A Severe Hypoglycemia Emergency A Guide For Families

| Step | Action | | :----------------------------------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | 1. Recognize Symptoms | If you feel shaky, sweaty, dizzy, or confused, check your blood glucose level immediately. | | 2. Check Blood Glucose | If your blood glucose is below 70 mg/dL (or your target range), proceed to step 3. | | 3. Treat with Fast-Acting Carbohydrates | Consume 15-20 grams of fast-acting carbohydrates (e.g., 3-4 glucose tablets, 1 tube of glucose gel, ½ cup of juice). | | 4. Recheck Blood Glucose | Wait 15 minutes and recheck your blood glucose. If it's still below 70 mg/dL, repeat step 3. | | 5. Call for Help (Severe Hypoglycemia) | If you are unable to treat yourself, or if you lose consciousness, someone should administer glucagon and call emergency services (911). | | 6. Follow Up | After recovering from a hypoglycemic episode, discuss it with your healthcare provider to adjust your treatment plan if needed. | | Emergency Contact | Dr. [Doctor's Name]: [Phone Number], Emergency Services: 911 |

By creating and consistently implementing a personalized hypoglycemia action plan, you can significantly reduce your risk of severe episodes and improve your overall diabetes management.

Responding to a BG Emergency: Step-by-Step Guide

Related reading: Hypoglycemia Low Blood Sugar 7 Symptoms You Should Never Ignore

When severe hypoglycemia strikes, quick and decisive action is critical. Here's a step-by-step guide on how to respond effectively:

  1. Assess the Situation:
    • If the person is conscious and able to swallow, proceed to step 2.
    • If the person is unconscious, having seizures, or unable to swallow, do not give them anything by mouth. Immediately proceed to step 4.
  2. Administer Fast-Acting Carbohydrates (If Conscious):
    • Give 15-20 grams of fast-acting carbohydrates, such as glucose tablets, glucose gel, juice, or regular soda.
    • Avoid giving foods high in fat, as they can slow down glucose absorption.
  3. Recheck Blood Glucose (If Possible):
    • Wait 15 minutes and recheck blood glucose levels.
    • If blood glucose is still below 70 mg/dL, repeat steps 2 and 3.
  4. Administer Glucagon (If Unconscious or Unable to Swallow):
    • Injectable Glucagon:
      • Locate the glucagon emergency kit.
      • Follow the instructions provided in the kit for preparing and administering the injection. Typically, this involves mixing the glucagon powder with the diluent and injecting it into the muscle (usually the thigh, arm, or buttock).
      • After administering glucagon, turn the person on their side to prevent choking if they vomit.
    • Nasal Glucagon:
      • Locate the nasal glucagon device.
      • Follow the instructions provided with the device for administering it into one nostril.
      • You do not need to prime the device.
  5. Call Emergency Services (911 or Your Local Emergency Number):
    • If the person is unconscious, having seizures, or if their condition does not improve within a few minutes after administering glucagon, call emergency services immediately.
    • Inform the dispatcher that the person is having a severe hypoglycemic reaction and that glucagon has been administered.
    • Provide your exact location and any relevant medical information.
  6. Monitor the Person Closely:
    • Even after administering glucagon or fast-acting carbohydrates, continue to monitor the person's condition closely.
    • Watch for signs of improvement, such as increased alertness or responsiveness.
    • Be prepared to provide additional assistance if needed.
  7. Document the Episode:
    • After the emergency has passed, document the details of the episode, including:
      • The date and time of the episode.
      • The person's symptoms and blood glucose level (if known).
      • The treatment administered (e.g., type and amount of carbohydrate, glucagon).
      • The person's response to treatment.
      • Any other relevant information.
    • Share this information with the person's healthcare provider.
  8. Prevent future occurrences: Consult with your healthcare provider, review medication, diet and exercise and identify changes that may be needed to your diabetes plan.

Important Considerations:

  • Glucagon Side Effects: Glucagon may cause nausea and vomiting. Turn the person on their side to prevent choking if they vomit.
  • Glucagon Effectiveness: Glucagon may not be effective if the person's glycogen stores are depleted (e.g., after prolonged fasting or intense exercise).
  • Repeat Glucagon Dose: If the person does not respond to the initial dose of glucagon within 15 minutes, a second dose may be administered.
  • Medical Follow-Up: Even if the person recovers fully after a hypoglycemic episode, it's essential to follow up with their healthcare provider to review their diabetes management plan.

Table: Responding to a Severe Hypoglycemic Emergency - Quick Reference Guide

| Situation | Action | | :------------------------------------------ | :------------------------------------------------------------------------------------------------------------------------------------------- | | Conscious and Able to Swallow | Give 15-20 grams of fast-acting carbohydrates; recheck blood glucose in 15 minutes. Repeat if needed. | | Unconscious or Unable to Swallow | Administer glucagon (injectable or nasal) according to instructions; call emergency services (911); turn person on their side. | | Seizures | Do not put anything in the person's mouth; protect them from injury; call emergency services (911); administer glucagon if trained and available. | | No Improvement After Glucagon | Call emergency services (911) immediately. |

Long-Term Prevention Strategies

While knowing how to respond to a severe hypoglycemic episode is essential, focusing on long-term prevention is even more crucial. Here are some strategies to minimize your risk of hypoglycemia:

  • Adhere to Your Diabetes Management Plan: Follow your healthcare provider's instructions regarding medication, diet, and exercise.
  • Regular Blood Glucose Monitoring: Check your blood glucose levels as directed by your healthcare provider, especially before meals, before bedtime, and before, during, and after exercise.
  • Consistent Meal Timing: Eat meals and snacks at regular intervals to avoid fluctuations in blood glucose levels.
  • Carbohydrate Counting: Learn how to count carbohydrates to match your insulin dosage to your food intake.
  • Adjust Insulin Dosage as Needed: Work with your healthcare provider to adjust your insulin dosage based on your blood glucose levels, meal plans, and activity levels.
  • Monitor for Hypoglycemia Unawareness: If you experience frequent hypoglycemic episodes without warning signs, talk to your healthcare provider about strategies to improve hypoglycemia awareness. Continuous glucose monitoring (CGM) systems can be particularly helpful.
  • Review Medications Regularly: Certain medications can increase the risk of hypoglycemia. Review your medication list with your healthcare provider to identify potential interactions or side effects.
  • Be Cautious with Alcohol: If you consume alcohol, do so in moderation and always with food. Monitor your blood glucose levels closely, as alcohol can lower blood glucose.
  • Plan Ahead for Exercise: Adjust your insulin dosage or carbohydrate intake before, during, and after exercise to prevent hypoglycemia.
  • Wear a Medical ID: Always wear a medical ID bracelet or necklace that clearly states you have diabetes and are prone to hypoglycemia.
  • Keep a Detailed Log: Document your blood glucose levels, food intake, activity levels, and medication dosages to identify patterns and potential triggers for hypoglycemia.
  • Consider a CGM: Continuous glucose monitors(CGM) alert for changes in blood sugar, enabling one to stay within a target blood sugar range.

Lifestyle Adjustments and Considerations:

  • Dietary Changes: Consult with a registered dietitian or certified diabetes educator to develop a meal plan that helps you maintain stable blood glucose levels.
  • Exercise Strategies: Work with an exercise physiologist or certified diabetes educator to develop an exercise plan that minimizes your risk of hypoglycemia.
  • Stress Management: Practice stress-reduction techniques, such as meditation, yoga, or deep breathing, to help manage your blood glucose levels.
  • Sleep Hygiene: Get enough sleep, as sleep deprivation can affect your blood glucose levels and insulin sensitivity.
  • Regular Check-Ups: Attend regular check-ups with your healthcare provider to monitor your overall health and make adjustments to your diabetes management plan as needed.

The Role of Technology in Hypoglycemia Management

Advancements in diabetes technology have significantly improved the management of hypoglycemia. Here are some key technological tools:

Related reading: How To Lower Your Blood Sugar Naturally And Keep It Stable

  • Continuous Glucose Monitoring (CGM) Systems: CGMs continuously track blood glucose levels and provide real-time data, alerts, and trend information. Some CGMs can even predict when blood glucose levels are likely to drop too low, giving you ample warning to take preventive measures.
  • Insulin Pumps: Insulin pumps deliver a steady stream of insulin throughout the day, mimicking the way a healthy pancreas functions. They can also be programmed to deliver bolus doses of insulin before meals. Some pumps have built-in features to reduce the risk of hypoglycemia, such as the ability to suspend insulin delivery when blood glucose levels are low.
  • Sensor-Augmented Pumps: These pumps combine the features of an insulin pump and a CGM, allowing for automated insulin delivery based on real-time blood glucose data.
  • Artificial Pancreas Systems: These systems are the most advanced form of diabetes technology. They automatically adjust insulin delivery based on real-time blood glucose data, effectively acting as an artificial pancreas. These systems can significantly reduce the risk of hypoglycemia and improve overall blood glucose control.
    • Automated Insulin Delivery (AID) is also another name for these systems. These advanced systems use sophisticated algorithms to adjust insulin levels in real-time, aiming to keep blood glucose within a target range. The most common AID systems include a continuous glucose monitor (CGM) that tracks glucose levels every few minutes, an insulin pump that delivers insulin, and a control algorithm that communicates between the CGM and the pump to automatically adjust insulin delivery.

By proactively preparing for hypoglycemia, responding quickly and effectively to emergencies, and utilizing technology to enhance your diabetes management, you can significantly reduce your risk of severe hypoglycemia and live a healthier, more confident life. Remember to work closely with your healthcare team to develop a personalized hypoglycemia prevention and management plan that meets your individual needs.