Hyponatremia-Related Muscle Cramping

Symptoms and Clinical Context

• In pediatric patients, symptoms of hyponatremia include fussiness, headache, nausea, vomiting, confusion, lethargy, and muscle cramps, making prompt diagnosis difficult 1
• In patients with cirrhosis and ascites, symptoms of hyponatremia range from nausea, muscle cramps, gait instability, lethargy, headache, and dizziness to confusion and seizure 2

Diuretic-Related Complications and Management

• Diuretic therapy complications in patients with cirrhosis and ascites can include muscle cramps, and management may involve decreasing or stopping diuretic dose, and albumin infusion may relieve symptoms 3
• Baclofen (10 mg/day, with weekly increases of 10 mg/day up to 30 mg/day) was safely used in a recent randomized controlled trial for muscle cramps in cirrhotic patients 4

Evaluation and Patient Assessment

• The presence of muscle cramps should prompt evaluation of serum sodium levels, particularly in patients receiving diuretic therapy 3, 4
• Patients with cirrhosis or heart failure should be evaluated for hyponatremia if they experience muscle cramps 2
• Prolonged exercise with excessive fluid intake can contribute to hyponatremia and muscle cramping 5