Secondary rhabdomyolysis

Definition

Secondary rhabdomyolysis occurs when the primary effect of a aetiological factor results in a functional or biochemical state which is conducive to the development of ischemic, degenerative, necrotic or membrane destabilizing changes in muscle, producing the clinical and biochemical features of rhabdomyolysis. Most frequently, rhabdomyolysis is secondary to a metabolic derangement often genetic in nature, as result of abnormally excessive movement, excessive isometric tension by attempted movement against resistance, or coma leading to increased intramuscular pressure, ischemia, hypoxia and necrosis. Secondary rhabdomyolysis can also be caused by a mutation in various genes (RYR1, LPIN).

Exclusions

• Myasthenia gravis or certain specified neuromuscular junction disorders
• Primary disorders of muscles

Index Terms