From the Research
If you have a lump in your forearm after lifting weights and suspect rhabdomyolysis, seek immediate medical attention at an emergency room. Rhabdomyolysis is a serious condition where damaged muscle tissue releases proteins and electrolytes into the blood, potentially causing kidney damage 1. A forearm lump after weightlifting could be a sign of muscle strain, tendon injury, or in severe cases, compartment syndrome or rhabdomyolysis. Other symptoms of rhabdomyolysis include severe muscle pain, weakness, dark urine (tea or cola-colored), decreased urination, fatigue, nausea, and confusion.
Key Considerations
- Rhabdomyolysis can be diagnosed by elevations in serum creatine phosphokinase (CPK), with many clinicians using five times the upper limit of normal as a cutoff 2.
- The mainstay of treatment is hospitalization with aggressive intravenous fluid (IVF) resuscitation and correction/prevention of electrolyte abnormalities 2.
- Treatment typically involves IV fluids to prevent kidney damage, monitoring kidney function through blood tests, and possibly hospitalization 1.
- While waiting for medical care, stop exercising, rest the affected area, stay hydrated, and don't take anti-inflammatory medications which could stress your kidneys.
Complications and Prognosis
- Rhabdomyolysis can be complicated by acute renal failure, compartment syndrome, cardiac dysrhythmias via electrolyte abnormalities, and disseminated intravascular coagulopathy 2.
- The mortality rate for rhabdomyolysis may still be as high as 8% 2, and approximately 10% according to another study 3.
- With prompt medical attention, the overall prognosis for rhabdomyolysis is favorable, with full recovery of renal function being common 2.
Prevention and Management
- Preventive measures include maintenance of normal or high intravascular volume and administration of diuretics once hypervolemia/euvolemia have been achieved 4.
- Early initiation of renal replacement therapy can help improve outcomes in severe cases 4.
- Seeking immediate medical attention is crucial in suspected cases of rhabdomyolysis to prevent serious complications and improve outcomes.