Rhabdomyolysis in the Setting of Severe Hyponatremia: A Case Report

Electrolyte imbalances are common problems among hospitalized patients, and they can have severe consequences. Although rare, severe hyponatremia or low sodium (Na) levels have been associated with the occurrence of rhabdomyolysis. This is a case of a 45-year-old man who presented with confusion and lethargy and was found to have severe hyponatremia with an elevated creatine phosphokinase (CPK) level of 45,440 IU/L. With the administration of normal saline, the Na levels and CPK improved. He was discharged from the hospital in stable clinical condition. This case demonstrates the need for providers to monitor rhabdomyolysis markers in severe hyponatremia, as there is an observed association between the two and the sequelae can be severe.