How many grams of sugar should be administered to someone who is experiencing a diabetic emergency?

Hypoglycaemia, sometimes called a hypo or low, is a condition that occurs when a person’s blood glucose level (BGL) has dropped too low, below 4mmol/L. It is important to treat a hypo quickly to stop the BGL from falling even lower and the person becoming seriously unwell.

Hypoglycaemia can make it hard to concentrate and carry out everyday activities. Some activities, such as driving and operating machinery, are not safe if BGLs are less than 5.0mmol/L.

Hypoglycaemia is much more common in people who take insulin or certain other glucose lowering tablets, however it can occur in people with diabetes who are not using insulin.

Causes of hypoglycaemia

Hypoglycaemia can be caused by one or a number of events, such as:

  • Too much insulin or other glucose lowering diabetes tablets
  • Delaying or missing a meal
  • Not eating enough carbohydrate
  • Unplanned physical activity*
  • More strenuous exercise than usual*
  • Drinking alcohol – the risk of hypoglycaemia increases, the more alcohol you drink

*Hypoglycaemia may be delayed for 12 hours or more after exercise

Symptoms

Symptoms of hypoglycaemia vary from person to person. Early signs and symptoms may include:

  • Shaking, trembling or weakness
  • Sweating
  • Paleness
  • Hunger
  • Light headedness
  • Headache
  • Dizziness
  • Pins and needles around mouth
  • Mood change

If the BGL continues to drop, more serious signs and symptoms may occur.

Later signs and symptoms of hypoglycaemia may include:

  • Lack of concentration/ behaviour change
  • Confusion
  • Slurred speech
  • Not able to treat own hypo
  • Not able to drink or swallow
  • Not able to follow instructions
  • Loss of consciousness
  • Fitting/seizures

Hypoglycaemia can be classified as mild or severe. A mild hypo occurs when a person can treat their own hypo. A severe hypo occurs when a person needs help from someone else to treat their hypo.

Treating hypoglycaemia

What should I do if I suspect I am having a hypo?

Check your BGL. (If you can’t check your BGL, treat it as a hypo, just in case.)

If your BGL is below 4 mmol/L:

Step 1:

Have 15 grams of fast acting carbohydrate such as

  • 6-7 jellybeans OR
  • 1/2 can of regular soft drink (not ‘diet’) OR
  • 1/2 glass of fruit juice OR
  • 3 teaspoons of sugar or honey OR Glucose tablets equivalent to 15 grams carbohydrate.

Step 2:

Wait 15 minutes, re-check your blood glucose levels to see if your BGL has risen above 4mmol/L.

  • If your BGL has risen above 4mmol/L go to Step 3.
  • If your BGL is still below 4mmol/L, repeat Step 1.

Step 3:

Eat a snack or meal with longer acting carbohydrate such as:

  • A slice of bread OR
  • 1 glass of milk OR
  • 1 piece of fruit OR
  • 2-3 pieces of dried apricots, figs or other dried fruit OR
  • 1 tub of natural low fat yoghurt OR
  • Pasta OR
  • Rice.
How many grams of sugar should be administered to someone who is experiencing a diabetic emergency?

What happens if I don’t treat hypoglycaemia?

If not treated quickly, the BGL can continue to drop, which may result in the brain not getting enough glucose. This can cause unconsciousness or fitting.

What to do if the person is unconscious, drowsy or unable to swallow

If a person with diabetes is unconscious, drowsy or unable to swallow THIS IS AN EMERGENCY.

Do not give them any food or drink by mouth, treat as follows:

  1. Place them on their side making sure their airway is clear
  2. Give an injection of Glucagon if available and you are trained to give it
  3. Phone for an ambulance (dial 000) stating the person is unconscious AND that the person has diabetes
  4. Wait with them until the ambulance arrives

What is glucagon?

Glucagon is a hormone which raises the BGL. It is injected into a muscle to reverse severe hypoglycaemia in people with diabetes. If you are able to treat your own ‘hypo’, you do not need Glucagon which is always given by another person. Your doctor or Credentialled Diabetes Educator will recommend you have Glucagon on hand in case of a severe ‘hypo’ and will show you, your family and friends how to use it.

Impaired Awareness of Hypoglycaemia (IAH)

Impaired Awareness of Hypoglycaemia (IAH) occurs when people do not feel the early warning symptoms of hypoglycaemia and only realise they are hypo when their BGLs drop very low or when they check their BGL. If you have had diabetes and hypos for many years the risk of not feeling the symptoms of hypos is more common. IAH can be dangerous because by the time you realise you are having a hypo you may find it hard to treat it and you could become unconscious.

If you have ‘hypos’ without symptoms or your symptoms change, you may need to check your blood glucose more often. Always treat BGLs at 4mmol/L or below, even if you feel fine. If you have low BGLs without any symptoms you need to discuss this with your doctor or Credentialled Diabetes Educator.

What else should I do?

  • Always carry fast acting carbohydrates with you
  • Wear identification that says you have diabetes
  • Make a note of any ‘hypos’ you have and discuss it with your doctor or Credentialled Diabetes Educator
  • Make sure your family, friends, co-workers, school staff and carers know how to recognise and treat hypoglycaemia
  • Look for the cause of your ‘hypo’ so you can try to prevent it from occurring again
  • Contact your doctor or Credentialled Diabetes Educator if you are having ‘hypos’ often
  • If you’re taking medication called Acarbose (Glucobay®) carry pure glucose with you such as glucose tablets, glucose gel or Lucozade
  • Eat carbohydrates if you are drinking alcohol
  • Test your blood glucose level and ensure it is above 5mmol/L before driving a motor vehicle.

Important tips:

  • Discuss any unexplained or frequent hypos with your doctor or Credentialled Diabetes Educator
  • DO NOT give food or fluids to an unconscious person
  • For emergency assistance call 000
How many grams of sugar should be administered to someone who is experiencing a diabetic emergency?

Diabetes is a chronic condition in which the body struggles to produce or respond to insulin, the hormone which regulates blood sugar levels. A diabetic emergency happens when a person’s blood glucose level goes outside the normal range, resulting in either too much sugar in the blood (hyperglycaemia) or too little sugar in the blood (hypoglycaemia). 442 million adults have diabetes worldwide, or one in 11 people.  The number of diabetes cases worldwide has quadrupled since 1990 (WHO, 2020). A high blood sugar level (hyperglycaemia) may evolve gradually and can be asymptomatic over several hours or even days. A low blood sugar level (hypoglycaemia) is usually sudden and life-threatening and therefore forms the focus of this topic.

  • Oral glucose administration (swallowing or eating glucose) should be used for an adult or child with suspected hypoglycaemia who is responsive and able to swallow.**
    >   First aid providers should give glucose tablets to a person who has symptoms of hypoglycaemia and is responsive.**
  • >   If glucose tablets are not available, various forms of dietary sugars such as Skittles, Mentos, sugar cubes, jellybeans or orange juice can be used to treat the symptoms of hypoglycaemia in a responsive person. *

  • If oral glucose (e.g. tablets or dietary sugars) is not available, a glucose gel can be given to an adult or child with suspected hypoglycaemia who is responsive and able to swallow. These gels are both absorbed into the cheeks (buccal) and swallowed (oral). *
  • Sublingual glucose administration (putting glucose under the tongue) may be used for suspected hypoglycaemia in children who may be uncooperative with swallowing a glucose substance. *
  • 15g to 20g of glucose tablets should be used to treat symptomatic hypoglycaemia in responsive babies, children and adults.
  • Glucose administration should be repeated if symptoms continue after 15 minutes.
  • If it is unclear if the person is hypoglycaemic or hyperglycaemic, the first aid provider should provide care for hypoglycaemia.

Guideline classifications explained 

  • People who are diabetic should be encouraged to carry blood testing kits with them as well as insulin or other oral medication or sugary food.
  • People who are diabetic should be advised to alert their family and friends to their condition and inform them on how to respond in an emergency.

Talk to the person. They may be able to tell you they are having a diabetic emergency and how you can help them.

Someone with low blood sugar may experience:

  • sweating with cold, clammy skin
  • weakness, faintness or hunger
  • drowsiness, restlessness, aggressiveness (often resembling drunkenness)
  • headache
  • rapid pulse
  • muscle tremors
  • deteriorating level of response and leading eventually to seizures or unresponsiveness. 
First aid steps
  1. Help the person to sit down.
  2. If the person has their own glucose or another sugar source, help them to take 15-20 grams of it. If they do not, give them a sugary (non-diet) drink, such as fruit juice, or some sugar (such as three teaspoons of sugar or three pieces of candy, like jellybeans).
  3. If symptoms continue after 15 minutes, give the person a repeated amount of glucose or sugar substance.

  _____________________________

CAUTION

Only give the person something to eat or drink if they are responsive and able to swallow.

______________________________

Access help
  • If the person’s condition does not improve quickly (around 30 minutes) or they become unresponsive access EMS. Monitor the person’s level of responsiveness, breathing and circulation while waiting for help to arrive.
    Advise the person to seek medical help if their symptoms are occurring more frequently than usual or if they have a fever.
Recovery
  • If the person starts to feel better, advise them they can eat some slow-acting sugars (e.g., a slice of bread or a waffle).
  • Encourage them or their companion to measure their blood sugar level.

  • Learners may have some misunderstandings, or pre-existing notions, of those impacted by diabetes (such as only overweight people get diabetes, it only affects middle-aged men, or it is a rich person’s disease). Ensure learners know diabetes (and therefore diabetic emergencies) could affect anyone.
  • Introducing the terms hyperglycaemia and hypoglycaemia may be important for some learners; however, you may consider keeping language to “high blood sugar” or “low blood sugar”, particularly for children.
  • Explore different ways in which learners can help the people they live or work with, who may have diabetes, recognise the signs of a diabetic emergency.
  • Even in an emergency, the ill person might be able to tell you what to do, so encourage learners to listen to them and act accordingly.
  • Emphasise the importance of recognising low blood sugar as it requires immediate care. If the brain is deprived of sugar, this can lead to Seizures and possible brain damage.
  • Emphasise that giving sugar to someone who has high blood sugar is unlikely to harm them. Whereas, not giving someone sugar who urgently needs it can be much more harmful.
  • Emphasise that diet food and drinks do not contain any sugar and will not raise the sugar levels of someone having a diabetic emergency.
  • Encourage learners to share their experiences with diabetic emergencies. For example, if they have a family member who has experienced a diabetic emergency. Sharing experiences can help people gain confidence and act effectively if the same thing happens again.
  • If the person becomes unresponsive, open their airway and check for breathing. See Unresponsiveness.
  • If the person has a Seizure, protect them from injury.
  • Diabetes can damage blood vessels and cause other serious conditions such as a heart attack (see Chest pain) or Stroke.

Systematic reviews 

The International Liaison Committee on Resuscitation (ILCOR) conducted two systematic reviews on hypoglycaemia.

Dietary sugars versus glucose tablets

The first systematic review looked at which dietary forms of sugar, compared to a standard dose (15g to 20g) of glucose tablets, should be used when providing first aid to someone experiencing hypoglycaemia (Carlson et al., 2017). The four studies identified all compared glucose tablets with sucrose, fructose, orange juice, jellybeans, Mentos and milk.

For the important outcome of clinical relief from hypoglycaemia in 15 minutes or less, three randomised controlled trials were included. Pooled data from 502 people with diabetes treated with dietary sugars (sucrose, fructose, orange juice, jellybeans, Mentos, and milk) and 223 people treated with glucose tablets (15–20 g) showed a benefit with glucose tablets. There was a slower resolution of symptoms 15 minutes after a person with diabetes was treated with dietary sugars compared with glucose tablets. Low-certainty evidence downgraded for risk of bias and imprecision.

For the important outcome of blood glucose (at least a 20-mg/dL increase of blood glucose by 20 minutes), one observational study is included. In it, 13 people with diabetes were treated with dietary sugars and nine were treated with glucose tablets. It showed a benefit with glucose tablets. Fewer people demonstrated a 20-mg/dL increase in blood glucose level 20 minutes after treatment when treated with dietary sugars compared with glucose tablets. Very low-certainty evidence downgraded for risk of bias and imprecision.

For the critical outcome of time to resolution of symptoms, the important outcome of risk of complications (e.g., aspiration), and the low-priority outcome of hospital length of stay, there were no human trials found.

First aid glucose administration routes

In the second systematic review, De Buck et al. (2019) identified the following four studies:

  • One randomised study that compared sublingual glucose administration in the form of table sugar, with oral administration  of 42 hypoglycaemic children between the ages of one and 15
  • Two non-randomised studies that compared buccal glucose administration with oral administration in 23 healthy, fasting, adult volunteers
  • One randomised study that compared a dextrose gel with oral administration of glucose in 18 people with type one diabetes and hypoglycaemia.

Providing sugar under the tongue (sublingual) resulted in a more significant rise in blood glucose after 20 minutes than giving the sugar orally. However, this was in a specific setting and included children with hypoglycaemia and symptoms of malaria or respiratory tract infection. On the other hand, giving glucose by inside cheek absorption (buccal) route resulted in a lower blood glucose concentration than giving it orally. For dextrose gel (where glucose is given through a combination of oral swallowing and via cheek absorption), results showed no clear benefit compared to oral glucose administration (taking glucose tablets or glucose solutions). Most studies did not report on time to resolution of symptoms, resolution of hypoglycaemia as defined by blood glucose levels above a certain threshold, time to resolution of hypoglycaemia, adverse events or treatment delay.

The evidence is of very low certainty due to limitations in study design, few studies and the small number of participants in the studies, and because half of the studies were performed with healthy volunteers rather than in people with characteristic hypoglycaemia.

Carlson JN, Schunder-Tatzber S, Neilson CJ, Hood N. (2017). Dietary sugars versus glucose tablets for first-aid treatment of symptomatic hypoglycaemia in awake patients with diabetes: a systematic review and meta-analysis. Emergency Medicine Journal. Feb;34(2):100-106. Retrieved from https://pubmed.ncbi.nlm.nih.gov/27644757/

De Buck E, Borra V, Carlson JN, Zideman DA, Singletary EM, Djärv T. (2019) First aid glucose administration routes for symptomatic hypoglycaemia. Cochrane Database Systematic Reviews Rev. Apr 11;4(4): CD013283. Retrieved from https://pubmed.ncbi.nlm.nih.gov/30973639/

Singletary, E. M., Zideman, D. A., Bendall, J. C., Berry, D. C., Borra, V., Carlson, J. N., … & Douma, M. J. (2020). 2020 International Consensus on First Aid Science with Treatment Recommendations. Circulation, 142(16_suppl_1), S284-S334. DOI 10.1161/CIR.0000000000000897

Singletary, E.M., Zideman, D.A., Bendall, J.C., Berry, D.C., Borra, V., Carlson, J.N., Cassan, P., …&, Lee, C.C., (2020). International Consensus on First Aid Science with Treatment Recommendations. Resuscitation. 2020 Nov;156:A240-A282. DOI 10.1016/j.resuscitation.2020.09.016

Non-systematic reviews

World Health Organisation, (2010). Diabetes. Diabetes Facts and Figures – Infographics. Retrieved from  https://www.who.int/diabetes/infographic/fr/

Unresponsive and breathing normally

Published: 15 February 2021