Health Information and Tools > Patient Care Handouts >  Diabetic Ketoacidosis (DKA): Care Instructions

Main Content

Diabetic Ketoacidosis (DKA): Care Instructions


Diabetic ketoacidosis (DKA) happens when the body does not have enough insulin and can't get the sugar it needs for energy. When the body can't use sugar for energy, it starts to use fat for energy. This process makes fatty acids called ketones. The ketones build up in the blood and change the chemical balance in your body.

This problem can be very dangerous and needs to be treated. Without treatment, it can lead to a coma or death.

DKA occurs most often in people with type 1 diabetes. But people with type 2 diabetes also can get it. DKA can be caused by many things. It can happen if you don't take enough insulin. It can also happen if you have an infection or illness like influenza (flu). Sometimes it happens if you are very dehydrated.

DKA can only be treated with insulin and fluids. These are often given in a vein (I.V.).

Follow-up care is a key part of your treatment and safety. Be sure to make and go to all appointments, and call your doctor or nurse advice line (811 in most provinces and territories) if you are having problems. It's also a good idea to know your test results and keep a list of the medicines you take.

How can you care for yourself at home?

To reduce your chance of ketoacidosis:

  • Take your insulin and other diabetes medicines on time and in the right dose.
    • If an infection caused your DKA and your doctor prescribed antibiotics, take them as directed. Do not stop taking them just because you feel better. You need to take the full course of antibiotics.
  • Test your blood sugar before meals and at bedtime or as often as your doctor advises. This is the best way to know when your blood sugar is high so you can treat it early. Watching for symptoms is not as helpful. This is because you may not have symptoms until your blood sugar is very high. Or you may not notice them.
  • Teach others at work and at home how to check your blood sugar. Make sure that someone else knows how do it in case you can't.
  • Wear or carry medical identification at all times. This is very important in case you are too sick or injured to speak for yourself.
  • Talk to your doctor about when you can start to exercise again.
  • Eat regular meals that spread your calories and carbohydrate throughout the day. This will help keep your blood sugar steady.
  • When you are sick:
    • Take your insulin and diabetes medicines. This is important even if you are vomiting and having trouble eating or drinking. Your blood sugar may go up because you are sick. If you are eating less than normal, you may need to change your dose of insulin. Talk with your doctor about a plan when you are well. Then you will know what to do when you are sick.
    • Drink extra fluids to prevent dehydration. These include water, broth, and sugar-free drinks. If you don't drink enough, the insulin from your shot may not get into your blood. So your blood sugar may go up.
    • Try to eat as you normally do, with a focus on healthy food choices.
    • Check your blood sugar at least every 3 to 4 hours. Check it more often if it's rising fast. If your doctor has told you to take an extra insulin dose for high blood sugar levels (for example, above 14.0 mmol/L) be sure to take the right amount. If you're not sure how much to take, call your doctor or nurse advice line.
    • Check your temperature and pulse often. If your temperature goes up, call your doctor or nurse advice line. You may be getting worse.
    • If you take insulin, check your urine or blood for ketones, especially when you have high blood sugar (for example, above 14.0 mmol/L. Call your doctor or nurse advice line if your ketone level is moderate or high.

If you know your blood sugar is high, treat it before it gets worse.

  • If you missed your usual dose of insulin or other diabetes medicine, take the missed dose or take the amount your doctor told you to take if this happens.
  • If you and your doctor decide on a dose of extra-fast-acting insulin, give yourself the right dose. If you take insulin and your doctor has not told you how much fast-acting insulin to take based on your blood sugar level, call your doctor or nurse advice line.
  • Drink extra water or sugar-free drinks to prevent dehydration.
  • Wait 30 minutes after you take extra insulin or missed medicines. Then check your blood sugar again.
  • If symptoms of high blood sugar get worse or your blood sugar level keeps rising, call your doctor or nurse advice line. If you start to feel sleepy or confused, call 911.

When should you call for help?

Call 911 anytime you think you may need emergency care. For example, call if:

  • You passed out (lost consciousness).
  • You are confused or cannot think clearly.
  • Your blood sugar is very high or very low.

Watch closely for changes in your health, and be sure to contact your doctor or nurse advice line if:

  • Your blood sugar stays outside the level your doctor set for you.
  • You have any problems.

Where can you learn more?

Go to

Enter J216 in the search box to learn more about "Diabetic Ketoacidosis (DKA): Care Instructions".

Care instructions adapted under license by your healthcare professional. If you have questions about a medical condition or this instruction, always ask your healthcare professional. Healthwise, Incorporated disclaims any warranty or liability for your use of this information.