What is malignant hyperthermia?

The first signs are high levels of carbon dioxide in the blood and a fast heart rate. Other severe reactions can also happen. You may have stiff muscles and a very high body temperature. Muscle tissue can break down as well.

Providers who give anesthesia will watch closely for the signs of the condition. They can treat it right away. They stop the drugs that caused the reaction and give medicines. Usually the surgery is stopped. Your body may be cooled down. You may need to stay in the hospital for a few days.

If you think you might be at risk, tell your surgeon and anesthesia provider before surgery. They can use different drugs to make you unconscious. They can also prepare to treat you right away if needed.

Wear a medical ID bracelet that says you are at risk. If you need emergency care, the bracelet will inform those who treat you. And warn your family members. They might be at risk too.

Malignant hyperthermia is more likely if you or a family member has had it before. Your risk is higher if you have a disease that affects the muscles. You can have a test to find out if you're at risk.

It's triggered by certain drugs that are used during general anesthesia. It's most likely to happen to people who have a rare problem that may be passed down in families.

Malignant hyperthermia is a rare, life-threatening reaction to some drugs used during surgery or other procedures. These drugs include medicines to make you unconscious. They also include medicines to help your muscles relax. The reaction can happen during or after surgery.