Abstract
Introduction: There is a paucity of studies examining the prevalence and clinical characteristics of rhabdomyolysis in hospitalized patients with COVID-19 infection. The purpose of this study is to examine the incidence, clinical characteristics, and outcome of hospitalized patients with COVID-19 infection who develop rhabdomyolysis.Methodology: This is a single-center retrospective analysis of all hospitalized patients with COVID-19 admitted between March 8, 2020, and January 11, 2021. All patients with creatinine kinase (CK) levels available during the hospital admission were included. Rhabdomyolysis was defined as an elevation in CK level higher than five times the upper limit of normal (i.e., 1125 U/L). We compared clinical characteristics and outcomes of patients who developed rhabdomyolysis with patients who did not develop rhabdomyolysis.Results: The incidence of rhabdomyolysis in hospitalized patients with COVID-19 infection was 9.2%. There was no significant difference noted in comorbidities and clinical characteristics between the two groups. Moreover, there was no significant difference noted in the presence of severe COVID-19 infection (72.7% vs 54.6%, p = 0.1), mortality (27.3% vs 23.9%, p = 0.72), acute kidney injury (59.1% vs 42.7%, p = 0.14), or need for intensive care unit (ICU) care (72.7% vs 51.4%, p = 0.051). However, a higher percentage of patients in the rhabdomyolysis group required physical rehabilitation after discharge (40.9% vs 19.3%, p = 0.02).Conclusion: The overall incidence of rhabdomyolysis in hospitalized patients with COVID-19 infection was high (9.2%). The presence of rhabdomyolysis was not associated with the increased severity of the disease. Patients with rhabdomyolysis more frequently required physical rehabilitation compared to those without rhabdomyolysis.
Highlights
There is a paucity of studies examining the prevalence and clinical characteristics of rhabdomyolysis in hospitalized patients with COVID-19 infection
There was no significant difference noted in the presence of severe COVID-19 infection (72.7% vs 54.6%, p = 0.1), mortality (27.3% vs 23.9%, p = 0.72), acute kidney injury (59.1% vs 42.7%, p = 0.14), or need for intensive care unit (ICU) care (72.7% vs 51.4%, p = 0.051)
A total of 996 patients were hospitalized with COVID-19 infection during the analysis period; 240 patients had at least one creatinine kinase (CK) level checked, out of which 22 (9.2%) were found to have rhabdomyolysis
Summary
There is a paucity of studies examining the prevalence and clinical characteristics of rhabdomyolysis in hospitalized patients with COVID-19 infection. The purpose of this study is to examine the incidence, clinical characteristics, and outcome of hospitalized patients with COVID-19 infection who develop rhabdomyolysis. Many studies have focused on respiratory, cardiovascular, renal, neurological, and gastrointestinal system involvement [2,3,4,5,6,7]. One retrospective study to date has examined the incidence and outcome of rhabdomyolysis in patients with COVID-19 infection [13]. The need for physical rehabilitation was not assessed. It is possible that COVID-19 infection may result in muscle inflammation and degradation, which may result in muscle weakness requiring the need for physical rehabilitation
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