Impact of Chronic Alcohol Use

Prevalence of Alcoholism

Chronic alcohol use, commonly referred to as alcoholism, affects approximately 4% of Canadians and around 12.5% of Americans. The consumption of alcohol is linked to an increased risk of various health issues, including multiple types of cancer, diabetes, cardiovascular diseases, and liver diseases, with the risks rising in a dose-dependent manner. Furthermore, chronic alcohol use often leads to acid-base and electrolyte imbalances.

Acid-Base Disturbances

A review published in The New England Journal of Medicine highlights that about 78% of patients with chronic alcohol use experience various acid-base disturbances. One notable condition is alcoholic ketoacidosis, characterized by symptoms such as abdominal pain and vomiting, resulting from gastritis and pancreatitis associated with chronic alcohol use. Clinically, this condition presents with elevated ketone levels in the blood, a high anion gap, and normal to slightly increased glucose levels. Alcoholic ketoacidosis typically arises from ethanol metabolism combined with prolonged starvation, leading to depleted glycogen stores in the liver. The authors of the review recommend initiating treatment by halting the ketogenic process through intravenous dextrose administration, along with thiamine supplementation, while advising against the use of insulin or bicarbonate.

Phosphorus Disturbances

Acute hypophosphatemia, or phosphorus deficiency, occurs in up to 50% of patients during the first 2-3 days of hospitalization for alcohol overuse. This deficiency can lead to rhabdomyolysis (muscle breakdown) and skeletal muscle weakness.

Magnesium and Calcium Disturbances

Approximately one-third of individuals who chronically abuse alcohol experience magnesium deficiency, known as hypomagnesemia, which manifests as weakness, tremors, and a positive Trousseau’s sign (carpal spasm when the upper arm is compressed). The causes of hypomagnesemia include insufficient intake, poor gastrointestinal absorption, and increased excretion. This deficiency often accompanies hypocalcemia, or reduced calcium levels, which can be worsened by a deficiency in vitamin D.

Potassium Disturbances

Hypokalemia, or potassium deficiency, affects roughly 50% of patients with chronic alcohol use. Causes include inadequate dietary intake, gastrointestinal losses from diarrhea, and increased urinary loss. Symptoms of hypokalemia may present as muscle weakness, ECG changes, or arrhythmias.

Sodium Disturbances

Binge drinking can lead to dehydration due to increased urine output, resulting in elevated sodium levels (hypernatremia). In contrast, chronic alcohol use typically causes decreased water clearance and hyponatremia (low sodium levels). Patients with hyponatremia require assessment of plasma osmolality, kidney function, and intravascular volume. Treatment may involve administering sodium chloride through intravenous fluids or refeeding while restricting fluid intake.

Conclusion

Chronic alcohol use is associated with numerous acid-base and electrolyte disturbances that can affect any individual with alcoholism, regardless of visible malnutrition. The review provides a comprehensive overview of these imbalances, serving as a valuable resource for clinicians in diagnosing and managing electrolyte issues in patients with chronic alcohol use.