Why does crush syndrome lead to hyperkalemia?

Hyperkalemia in patients with crush syndrome is generally caused by blind potassium supplementation, muscle necrosis, metabolic acidosis, impaired renal function, and myocardial tissue damage.

1. Blind potassium supplementation: In cases of crush syndrome, potassium may be blindly administered to prevent electrolyte disturbances, which can lead to hyperkalemia and symptoms such as muscle weakness and polyuria. Patients should actively communicate with their doctors to avoid continued potassium supplementation and reduce dietary potassium intake.

2. Muscle necrosis: In crush syndrome, prolonged compression of muscle tissue leads to ischemia and hypoxia, ultimately resulting in muscle cell necrosis. Patients should follow medical advice to remove necrotic tissue and use hydrogen peroxide solution, methyl violet solution, or mercurochrome solution under medical guidance to disinfect the affected area.

3. Metabolic acidosis: Tissue injury and hypoxia caused by crush syndrome can induce metabolic acidosis, which further exacerbates hyperkalemia. It is recommended to administer sodium bicarbonate under medical supervision to alkalinize the blood, closely monitor serum potassium levels, and, if necessary, administer glucose-insulin solution or dialysis treatment.

4. Impaired renal function: Myoglobin released during crush syndrome can cause acute kidney injury, impairing the kidney's ability to excrete potassium. Active measures should be taken to restore renal function; if necessary, continuous renal replacement therapy may be performed under medical supervision to remove excess potassium ions from the body.

5. Myocardial tissue damage: Crush syndrome may result in prolonged local compression in the body, impairing blood circulation and leading to myocardial tissue damage. Damaged cardiac cells may release a significant amount of potassium into the bloodstream, causing hyperkalemia. Under medical guidance, patients may use medications such as coenzyme Q10 capsules, creatine phosphate sodium for injection, and levocarnitine injection to alleviate symptoms and help protect myocardial tissue.

In daily life, avoiding trauma helps prevent crush syndrome. When suffering from this condition, patients should actively cooperate with doctors in rehabilitation training to promote recovery.