If not treated quickly, alcoholic ketoacidosis may be life-threatening. Your doctor and other medical professionals will watch you for symptoms of withdrawal. The American College of Clinical Toxicology states that for toxic alcohol levels to be clinically useful, they must be resulted within two hours of being drawn (1). The gold standard test for the determination of serum toxic alcohol levels, however, is gas chromatography, which the vast majority of hospital labs do not have the capability of performing. This lab becomes a “send-out” and therefore useless in the acute setting. This review discusses the range of clinical presentations seen with poisonings by the major toxic alcohols–methanol, ethylene glycol, and isopropyl alcohol.
How Alcohol Impacts pH Levels
An isopropanol level of 100 mg/dL can be considered equivalent to an ethanol level of 200 mg/dL (1). Its rapid conversion via ADH makes the time from ingestion to symptom onset within 30 minutes (1). Patients with isopropanol intoxication present with headache, dizziness, miotic pupils, stupor, or coma. Isopropanol is a GI irritant and may cause abdominal pain, vomiting, diarrhea and hematemesis (1, 2). Isopropanol is a common substance found in cleaning agents and also marked as “rubbing alcohol,” a household antiseptic.
Related MedlinePlus Health Topics
Most cases of AKA occur when a person with poor nutritional status due to long-standing alcohol abuse who has been on a drinking binge suddenly decreases energy intake because of abdominal pain, nausea, or vomiting. In addition, AKA is often precipitated by another medical illness such as infection or pancreatitis. Typically, an alcohol binge leads to vomiting and the cessation of alcohol or food intake for ≥ 24 hours.
- Patients with isopropanol intoxication present with headache, dizziness, miotic pupils, stupor, or coma.
- Carnitine acyltransferase (CAT) transports free fatty acids into the mitochondria and therefore regulates their entry into the oxidative pathway.
- When this happens, it can cause ketones, which are acids, to build up in your blood.
- Alcohol, or ethanol, is a psychoactive substance produced through the fermentation of sugars.
Alcoholic Ketoacidosis Treatment and Diagnosis
- Alcoholic ketoacidosis is a condition that can happen when you’ve had a lot of alcohol and haven’t had much to eat or have been vomiting.
- A possible link between AKA and sudden death in chronic alcoholism has been proposed but remains unconfirmed.
- This drop in blood sugar causes your body to decrease the amount of insulin it produces.
- Ethylene glycol (EG) is a colorless, odorless liquid with a sweet taste.
Formaldehyde and formic acid, the toxic metabolites of methanol metabolism, are extremely damaging to both the central nervous system and the gastrointestinal (GI) tract and generate a profound metabolic acidosis. With significant methanol poisonings the serum bicarbonate level can be extremely low. The optic nerve is especially susceptible to damage by formic acid, and visual disturbances occur in 29 – 72% of cases (10). These visual disturbances range from initial blurriness, to photophobia, altered visual fields and, if left untreated, eventual blindness (9). Poisonings with methanol, ethylene glycol, and isopropanol—commonly referred to as the toxic alcohols—often present the emergency physician with a major diagnostic challenge.
Correct diagnosis is essential for effective treatment of AKA, and these laboratory tests provide the necessary data to confirm the presence of the condition. The identification of these signs and symptoms is critical in diagnosing AKA, as they often point healthcare providers towards the condition in conjunction with a patient’s alcohol use history. Several factors contribute to the onset of AKA, including starvation-induced hypoinsulinemia—a deficiency of insulin in the blood—as well as the direct oxidation of alcohol to its ketone metabolites. Prolonged vomiting leads to dehydration, which decreases renal perfusion, thereby limiting urinary excretion of ketoacids. Moreover, volume depletion increases the concentration of counter-regulatory hormones, further stimulating lipolysis and ketogenesis.
Toxicokinetics
They attributed this to the administration of therapy (intravenous dextrose) rather than the Alcohol Use Disorder withdrawal of the toxin, ethanol. In contrast to diabetic ketoacidosis, the predominant ketone body in AKA is β-OH. Routine clinical assays for ketonemia test for AcAc and acetone but not for β-OH. Clinicians underestimate the degree of ketonemia if they rely solely on the results of laboratory testing. The hallmark of AKA is ketoacidosis without marked hyperglycemia; the serum glucose level may be low, normal, or slightly elevated.
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Ketones provide some energy to cells but also make the blood too acidic (ketoacidosis). This ketoacidosis is similar to the ketoacidosis that occurs in diabetes except that, unlike in diabetic ketoacidosis, blood glucose levels are low. Growth hormone, epinephrine, cortisol, and glucagon are all increased. Plasma glucose levels are usually low or normal, but mild hyperglycemia alcohol acidosis sometimes occurs.
Risk factors for metabolic acidosis
Treatment for alcohol addiction is also necessary to prevent a relapse of alcoholic ketoacidosis. These conditions have to be ruled out before a medical professional can diagnose you with alcoholic ketoacidosis. Some manufacturers of EG containing antifreeze add sodium fluorescein (SF) to the mixture for the purpose of allowing mechanics to visualize automotive coolant leaks during inspection (16).
lactate
- As discussed above, the measurements of anion gap and osmol gap are not sensitive nor specific enough to definitively diagnose or rule out toxic alcohol poisoning.
- During physical examination, healthcare professionals look for signs that are consistent with AKA, such as signs of dehydration and an alcoholic odor on the breath.
- Isopropanol is absorbed much faster than ethanol making it roughly two times as intoxicating.
- In some instances, doctors may also assess for lactic acidosis, a condition characterized by an excessive buildup of lactic acid in the bloodstream.
- Alcoholic ketoacidosis doesn’t occur more often in any particular race or sex.
- Our team is skilled at helping individuals overcome the negative effects of alcohol abuse and get on the road to lasting recovery.
Lastly, alcohol need not be detected on admission to make the diagnosis of this metabolic disturbance. However, when present, it could contribute directly to the lactic, acetic and B-hydroxybutyric acidoses. With respect to the theoretical constraints on ethanol metabolism, it appears that “overproduction” of NADH in the liver is best averted by converting ethanol to B-hydroxybutyric acid. Lactic acidosis occurs when ethanol metabolism results in a high hepatic NADH/NAD ratio, diverting pyruvate metabolism towards lactate and inhibiting gluconeogenesis. In peripheral tissues, where NADH levels are lower, this lactate may be converted to pyruvate for metabolic needs. Pyruvate and lactate are then maintained in steady state at much higher levels than normal.
- Infection or other illnesses such as pancreatitis can also trigger alcoholic ketoacidosis in people with alcohol use disorder.
- Typically, an alcohol binge leads to vomiting and the cessation of alcohol or food intake for ≥ 24 hours.
- You can learn how to reduce your alcohol intake or eliminate it altogether.
- Efficient and timely management can lead to enhanced patient outcomes in patients with AKA.
- Maintaining an adequate and steady ethanol level in the blood (100–150 mg/dL) is critical for this method to be successful (1).
Table 1 Metabolic factors affecting acid base balance in AKA .
It outlines a straightforward diagnostic strategy and discusses in detail the current treatment recommendations. The interplay of fatty acids, their metabolic pathways, and the precise mechanisms of ketone secretion contribute to the overall picture of alcoholic ketoacidosis. In some instances, doctors may also assess for lactic acidosis, a condition characterized by an excessive buildup of lactic acid in the bloodstream. Treatment approaches will depend on the specific diagnosis derived from these investigations, allowing healthcare providers to deliver tailored care. To mitigate the effects of alcohol on your pH levels, one effective strategy is to balance alcohol consumption with a diet rich in alkaline foods. Foods such as fruits, vegetables, nuts, and legumes can help to neutralize acidity in the body and promote a more balanced pH level.