Alcoholic Ketoacidosis: Causes, Signs, and Treatment

Alcoholic Ketoacidosis (AKA): What it is and why it's urgent

AKA is a serious syndrome that develops in individuals with alcohol use disorder (AUD) due to prolonged malnutrition and dehydration. ^[2] This typically arises when individuals substitute alcohol for proper nutrition or experience persistent vomiting following alcohol binges, preventing adequate food and fluid intake. This can cause the blood to become more acidic, which, if left untreated, can cause severe dysfunction of bodily processes.

AKA is characterized by acidosis of the blood, dehydration, and low blood glucose levels. ^[2] Each of these factors requires urgent treatment in the emergency room, and when combined, the risk to the individual’s health is even greater. Treatment focuses on correcting the blood acidosis, rehydration, and providing essential nutrients to stabilize the patient's metabolic state.

How alcohol & starvation trigger alcoholic acidosis

Heavy alcohol use, either acute or chronic, can reduce the amount of water and food that the individual consumes. ^[3] If this state of relative starvation is prolonged, it can lead to alcoholic ketoacidosis. Glucose is the primary energy source in the body, but it’s quickly depleted in starvation states, so the body switches to burning fats for energy. ^[2] This process causes ketones to be produced, which can build up in the bloodstream, leading to acidosis. If left untreated, this can lead to serious complications, including cardiac dysfunction and respiratory failure, which can be fatal.

Signs and symptoms to look out for

AKA can cause a variety of symptoms, but the most common ones are listed below: ^[2]

• Fast heart rate: Common in AKA and is linked to dehydration
• Abdominal pain: Related to complications of alcohol excess, including gastritis or pancreatitis
• Nausea and vomiting: Caused by acidosis and gastrointestinal upset
• Confusion or agitation: Results of the metabolism of excess alcohol
• Rapid breathing: Part of the body’s response to acidosis, allowing for quicker removal of carbon dioxide through breathing
• Dehydration: Little or no urine output, thirst, and lightheadedness 

Diagnosis and tests used

For any patient presenting to the emergency room with a history of alcohol use and a combination of the above signs and symptoms, clinicians will be thinking about possible AKA. After assessing the patient, laboratory tests will be collected to help confirm the diagnosis. Some of the key tests include a complete blood count, a complete metabolic panel, and an arterial blood gas, which can indicate metabolic acidosis, hypoglycemia, and dehydration. ^[2]

Clinicians should rule out other conditions that are similar to AKA to ensure appropriate treatment. Most notable is diabetic ketoacidosis (DKA), which can occur in those with poorly controlled diabetes. A key differentiator is that high blood sugar is seen in DKA.

Treatment options

Treatment is focused on rehydration, alongside correction of the acidosis and electrolyte imbalances. Clinicians typically provide intravenous rehydration with saline and dextrose, which is a fluid that contains glucose. This fluid not only helps to rehydrate, but the glucose component also helps to break the cycle of ketone production, promoting insulin secretion and improving the acidosis. ^[2] This process can help to rapidly improve AKA.

If blood tests demonstrate any electrolyte abnormalities, these can also be corrected intravenously. Additionally, if clinicians suspect alcohol withdrawal, they will also provide treatment for this to prevent serious symptoms, such as seizures. ^[2]

Risks, complications, and when to admit

While AKA can be effectively treated when caught early, delayed recognition or inadequate treatment can lead to serious complications. Severe acidosis may cause cardiac arrhythmias, respiratory failure, and reduced consciousness. ^[2] Electrolyte imbalances, particularly low potassium and magnesium levels, can further increase the risk of dangerous cardiac arrhythmias.

Most patients with AKA or signs of alcohol withdrawal require hospital admission for close monitoring and intravenous treatment. AKA can also lead to some long-term health problems, including liver damage, reduced kidney function, and neurological problems.

Preventing recurrence & treating AUD after stabilization

Once the acute episode has been resolved, addressing the underlying alcohol use disorder becomes crucial for preventing future AKA episodes. AUD treatment may include detox programs, medical treatment, and counseling or behavioural therapies. It’s important to connect with a medical professional after an episode of AKA so that they can arrange the ongoing AUD treatment and necessary follow-up.

A strong support network of family, friends, and local support groups (like Alcoholics Anonymous) plays a vital role in long-term recovery success. It’s also important to address any underlying mental or physical health conditions that may be contributing to alcohol dependency.

How to reduce your risk

Avoiding excessive alcohol consumption and maintaining proper nutrition are the best ways to avoid AKA. For those suffering from AUD, seeking professional help early can prevent the malnutrition and dehydration that lead to AKA. 

Individuals in recovery should ensure they eat regular, balanced meals and stay well hydrated. If your medical professional has prescribed vitamin supplements, such as thiamine, it’s important to take these regularly. It’s vital to be aware of the symptoms of AKA and seek prompt medical attention if you’re experiencing any of these after alcohol consumption. If you or someone you know struggles with AUD, contact a medical professional for further guidance and treatment.