Exertional rhabdomyolysis--when should we start worrying? Case reports and literature review.

Exertional rhabdomyolysis (ER) is a serious medical issue usually seen in individuals or patients after engaging in heavy exertion and physical activity. The incidence, natural course, and recurrence of ER are, by and large, unknown. Given the lack of rigorous scientific data that are specific for ER, most of the patients with ER receive treatment in an inpatient setting even with only a mild elevation of creatine phosphokinase (CPK) level. Often, patients receive inpatient treatment solely on the basis of elevated CPK (<3000 IU) even in the absence of other serious signs and symptoms of ER. We intent to describe 2 case reports that involve patients who developed ER after an intense physical exertion and were managed in an outpatient setting with close follow-up. In the discussion part, we point suggest that in patients with a relatively mild CPK elevation (<15,000 IU) and normal creatinine value and in the absence of factors such as profound dehydration, sickle cell trait, concomitant infectious cause, underlying metabolic syndrome, and current and ongoing use of analgesics, the complications after ER are low. Patients who develop ER, who can be reliably followed up, and who fulfills these criteria can be managed as outpatients.