Alcoholic Ketoacidosis

How alcoholic ketoacidosis develops

AKA results from three things happening together:

1. Starvation: heavy drinkers often eat little, so glycogen (stored sugar) runs out within a day or two. Insulin levels fall and stress hormones rise, switching the body to burning fat and making ketones.
2. Alcohol metabolism: breaking down alcohol in the liver shifts its chemistry so that ketone production favors beta-hydroxybutyrate, a strong acid, and blocks the liver from making new glucose.
3. Dehydration from vomiting: reduces the kidneys' ability to clear acid and worsens stress hormone release.

Typically someone drinks heavily for days, stops because of vomiting or belly pain, and comes to hospital 1 to 3 days later. Blood alcohol is often low or zero by then.

Symptoms

• nausea and repeated vomiting
• abdominal pain, often diffuse
• fast, deep breathing as the body blows off acid
• fast heart rate, low blood pressure, dizziness
• thirst and signs of dehydration
• agitation or confusion in some
• a fruity smell on the breath (less obvious than in DKA)

Many people also have conditions that come with heavy drinking: alcohol withdrawal, pancreatitis, gastritis, liver disease, infection, or low potassium, magnesium and phosphate.

Alcoholic ketoacidosis vs diabetic ketoacidosis

Because standard urine dipsticks mainly detect acetoacetate, they can underestimate ketones in AKA. Blood beta-hydroxybutyrate testing is more reliable.

Diagnosis

Doctors suspect AKA in a person with a history of heavy drinking, vomiting and a metabolic acidosis on blood tests. Tests include:

• blood gases showing acidosis with a high anion gap
• blood ketones (beta-hydroxybutyrate)
• blood glucose, usually not very high
• electrolytes, kidney and liver function, lipase for pancreatitis
• lactate, blood alcohol and a toxic alcohol screen

Doctors must rule out dangerous mimics: diabetic ketoacidosis, methanol or ethylene glycol poisoning (antifreeze), aspirin overdose and lactic acidosis from sepsis or shock.

Treatment

AKA usually improves within 12 to 24 hours of treatment.

• Intravenous fluids containing glucose (dextrose) and saline: glucose triggers insulin release, which stops ketone production. Fluids correct dehydration.
• Thiamine (vitamin B1) before or with glucose: heavy drinkers are often deficient, and glucose without thiamine can precipitate Wernicke encephalopathy, a brain disorder causing confusion, unsteadiness and eye movement problems.
• Electrolytes: potassium, magnesium and phosphate are replaced as needed.
• Anti-nausea medicine.
• Monitoring and treatment of alcohol withdrawal, which can start within 6 to 24 hours of the last drink.
• Insulin is generally not needed, and bicarbonate is rarely used.

Outlook

AKA itself responds well to treatment, and deaths are usually due to other problems that occur with it, such as withdrawal seizures, pancreatitis, infection, bleeding or heart rhythm problems from low potassium. Episodes tend to recur if heavy drinking continues. AKA is sometimes found as a cause of sudden death in people with alcohol use disorder.

Prevention

The only reliable prevention is reducing or stopping heavy drinking. Help is available from primary care doctors, addiction services, medicines such as naltrexone or acamprosate, and support groups. In the US, the SAMHSA National Helpline (1-800-662-4357) offers free, confidential referral. Stopping suddenly after long-term heavy drinking can be dangerous, so withdrawal should be medically supervised.

Frequently asked questions

What are the symptoms of alcoholic ketoacidosis?

The main symptoms are nausea, repeated vomiting, abdominal pain, fast deep breathing, thirst and a racing heart, usually a day or two after a heavy drinking binge with little food. Some people become confused or very weak. It needs emergency treatment.

How is alcoholic ketoacidosis different from DKA?

Both cause acid buildup from ketones. DKA happens in people with diabetes who lack insulin, and blood sugar is high. AKA follows heavy drinking and starvation, and blood sugar is normal or low. AKA is treated with fluids, glucose and thiamine rather than insulin.

How long does alcoholic ketoacidosis last?

With treatment in hospital, the acidosis usually clears within 12 to 24 hours. Recovery may take longer if there are complications such as pancreatitis, withdrawal or infection. The condition can come back with further binge drinking.

Can you die from alcoholic ketoacidosis?

It can be fatal if untreated, especially combined with dehydration, low potassium, infection, pancreatitis or withdrawal. With prompt treatment, the outlook for the ketoacidosis itself is good. Long-term outcomes depend on reducing alcohol use.

Can you get ketoacidosis from drinking without diabetes?

Yes. Alcoholic ketoacidosis happens in people without diabetes. It results from heavy alcohol intake combined with not eating and vomiting, which together push the body to produce large amounts of ketones.