What Is Severe Hypoglycemia and What Are the Emergency Steps?

02 Sep 2025

What Is Severe Hypoglycemia and What Are the Emergency Steps? Severe hypoglycemia, also known as a severe low blood sugar episode, is a critical and p...

What Is Severe Hypoglycemia and What Are the Emergency Steps?

Severe hypoglycemia, also known as a severe low blood sugar episode, is a critical and potentially life-threatening condition that occurs when the glucose levels in the blood drop to a dangerously low level. This most often affects individuals with diabetes, particularly those taking insulin or certain oral medications to manage their blood sugar. Understanding what severe hypoglycemia is, recognizing its symptoms, and knowing the emergency steps to take can be life-saving, both for individuals at risk and those around them. This article delves into the specifics of severe hypoglycemia, including its causes, symptoms, and the crucial emergency actions required.

Understanding Severe Hypoglycemia

Hypoglycemia, in general, refers to low blood sugar. It becomes severe when the low blood sugar is so profound that the individual requires assistance from another person to recover. This typically involves the person being unable to treat themselves effectively because of confusion, disorientation, seizures, or loss of consciousness. Severe hypoglycemia is not just a medical event; it's an emergency that requires immediate intervention to prevent serious harm or even death.

Causes of Severe Hypoglycemia

Several factors can lead to severe hypoglycemia, primarily in individuals with diabetes. The most common causes include:

  • Excessive Insulin Dosage: Taking too much insulin relative to food intake or activity level.
  • Skipping or Delaying Meals: Not eating enough carbohydrates or delaying meals after taking insulin.
  • Increased Physical Activity: Engaging in strenuous exercise without adjusting insulin dosage or carbohydrate intake.
  • Alcohol Consumption: Alcohol can interfere with the liver's ability to release glucose into the bloodstream, especially when consumed without food.
  • Certain Medications: Besides diabetes medications, some other drugs can interact and increase the risk of hypoglycemia.
  • Kidney or Liver Problems: Impaired kidney or liver function can affect how the body processes insulin and glucose.

Symptoms of Severe Hypoglycemia

Recognizing the symptoms of hypoglycemia, especially as they progress in severity, is crucial. The symptoms of mild to moderate hypoglycemia can often escalate to severe hypoglycemia if left untreated.

  • Mild to Moderate Hypoglycemia Symptoms:
    • Shakiness or tremors
    • Sweating
    • Rapid heartbeat
    • Anxiety or nervousness
    • Irritability or confusion
    • Lightheadedness or dizziness
    • Hunger
    • Blurred vision
  • Severe Hypoglycemia Symptoms:
    • Inability to eat or drink
    • Confusion or disorientation
    • Seizures
    • Loss of consciousness
    • Unresponsiveness

Emergency Steps for Severe Hypoglycemia

When someone is experiencing severe hypoglycemia, quick and appropriate action is critical. The goal is to raise their blood sugar levels as rapidly as possible. Here are the emergency steps:

Step 1: Assess the Situation and Call for Help

First and foremost, assess the person's condition. Are they conscious and able to swallow? If the person is unresponsive, having seizures, or unable to swallow, immediately call emergency services (911 in the US or the appropriate emergency number in your location). Do not attempt to give them anything by mouth, as this could cause choking.

Step 2: Administer Glucagon (If Available)

Glucagon is a hormone that stimulates the liver to release stored glucose into the bloodstream. It is available as an injectable or nasal spray medication and is prescribed for individuals at risk of severe hypoglycemia. If you have glucagon available and know how to use it:

  • Injectable Glucagon: Follow the instructions provided with the glucagon kit. Typically, you will need to mix the glucagon powder with the provided liquid, then inject it into the person's thigh, arm, or buttock.
  • Nasal Glucagon: Follow the instructions on the package. Generally, it involves inserting the device into one nostril and pressing the plunger to administer the glucagon.

Related reading: Factors Affecting Blood Sugar It S More Than Just What You Eat

After administering glucagon, wait about 15 minutes for the person to respond. If there is no improvement, contact emergency services.

Step 3: If Conscious and Able to Swallow, Give Fast-Acting Carbohydrates

If the person is conscious and able to swallow, provide a source of fast-acting carbohydrates. These are quickly absorbed into the bloodstream and can rapidly raise blood sugar levels.

  • Examples of fast-acting carbohydrates include:
    • Glucose tablets (follow the instructions on the label; typically 3-4 tablets)
    • Glucose gel or liquid (one serving)
    • Fruit juice (4 ounces)
    • Regular (non-diet) soda (4 ounces)
    • Honey or syrup (1 tablespoon)

Avoid giving foods high in fat, like chocolate or candy bars, as the fat can slow down the absorption of glucose.

Related reading: The Best Fasting Blood Glucose Tips For Persons With Diabetes

Step 4: Recheck Blood Sugar

After giving fast-acting carbohydrates, wait about 15 minutes and then recheck the person's blood sugar using a glucose meter, if available. If the blood sugar is still low (below 70 mg/dL or 3.9 mmol/L), repeat the process by giving another dose of fast-acting carbohydrates.

Step 5: Provide a Sustained Source of Carbohydrates

Related reading: A1C Vs Daily Blood Sugar Readings Which Matters More For Your Health

Once the person's blood sugar starts to rise and they are feeling better, give them a longer-acting source of carbohydrates and protein to help stabilize their blood sugar levels and prevent another drop.

  • Examples include:
    • Crackers with peanut butter
    • A sandwich
    • Cheese and fruit

Step 6: Monitor Closely and Seek Medical Attention

Even if the person recovers after treatment, monitor them closely for the next few hours. Severe hypoglycemia can sometimes cause delayed effects. It is also important to seek medical attention to determine the cause of the episode and adjust their diabetes management plan accordingly.

Prevention of Severe Hypoglycemia

Prevention is key to avoiding severe hypoglycemic episodes. Individuals with diabetes and their caregivers should focus on strategies to maintain stable blood sugar levels.

Education and Awareness

  • Understanding Diabetes Management: Comprehensive education on diabetes management, including insulin administration, carbohydrate counting, and blood sugar monitoring, is essential.
  • Recognizing Early Symptoms: Learning to recognize the early symptoms of hypoglycemia can allow for prompt treatment before it progresses to a severe episode.

Regular Blood Sugar Monitoring

  • Consistent Monitoring: Regular blood sugar monitoring, as recommended by a healthcare provider, helps identify trends and potential issues before they become severe.
  • Continuous Glucose Monitoring (CGM): CGM devices can provide real-time blood sugar readings and alerts for low or high glucose levels, helping individuals take proactive steps to manage their diabetes.

Meal Planning and Timing

  • Balanced Meals: Consuming balanced meals at regular intervals can help maintain stable blood sugar levels.
  • Carbohydrate Counting: Accurately counting carbohydrates can help match insulin dosages to food intake.

Exercise Management

  • Adjusting Insulin or Carbohydrate Intake: Adjusting insulin dosages or increasing carbohydrate intake before, during, or after exercise can help prevent hypoglycemia.
  • Monitoring Blood Sugar During Exercise: Checking blood sugar levels before, during, and after exercise can help identify patterns and adjust management strategies accordingly.

Medication Management

  • Proper Insulin Dosage: Working closely with a healthcare provider to determine the appropriate insulin dosage based on individual needs and lifestyle factors is crucial.
  • Understanding Medication Interactions: Being aware of potential medication interactions that can affect blood sugar levels is important.

Emergency Preparedness

  • Having Glucagon Available: Ensuring that glucagon is readily available and that family members, friends, and caregivers know how to administer it.
  • Wearing Medical Identification: Wearing medical identification, such as a bracelet or necklace, that indicates having diabetes and taking insulin or other diabetes medications.
  • Educating Others: Educating family members, friends, and caregivers about the signs of hypoglycemia and how to respond in an emergency.

The Role of Education and Support

Education and support are critical components of diabetes management and prevention of severe hypoglycemia.

  • Diabetes Education Programs: Participating in diabetes education programs can provide individuals with the knowledge and skills needed to manage their condition effectively.
  • Support Groups: Joining support groups can offer emotional support and shared experiences with others who have diabetes.
  • Healthcare Team Collaboration: Working closely with a healthcare team, including doctors, nurses, dietitians, and diabetes educators, can help individuals develop and implement a personalized diabetes management plan.

Conclusion

Severe hypoglycemia is a serious complication of diabetes that requires prompt recognition and immediate treatment. Understanding the causes, symptoms, and emergency steps is essential for individuals with diabetes and those around them. By following the guidelines outlined in this article, you can be prepared to respond effectively in an emergency and take proactive steps to prevent severe hypoglycemic episodes. Remember, early intervention and prevention are key to maintaining good health and preventing life-threatening complications.