Key result
ECMO plus Impella CP supports full cardiac recovery in severe streptococcal toxic shock syndrome.
Why the study?
Group A Streptococcus is a clinically important yet underrecognized cause of inflammatory myocardial dysfunction capable of triggering shock through toxin-mediated injury and inflammation.
Case Report (n=1)
Streptococcal toxic shock syndrome can precipitate severe, reversible biventricular myocardial dysfunction mimicking fulminant myocarditis that can be successfully managed with mechanical circulatory support and targeted antimicrobial therapy.
Answers are grounded in this paper and cite their sources.
Alerts clinicians to reversible cardiomyopathy in streptococcal toxic shock; leaves open optimal support strategies pending larger studies.
BACKGROUND: Group A Streptococcus is a clinically important yet underrecognized cause of inflammatory myocardial dysfunction, capable of triggering shock through toxin-mediated injury and inflammation. CASE SUMMARY: A 19-year-old woman presented with progressive fatigue, severe hypotension, and a purpuric chest rash. Laboratory investigation showed rising troponin, leukocytosis, and lactic acidosis. Echocardiography and right heart catheterization revealed significant biventricular dysfunction. She developed shock requiring mechanical circulatory support with an Impella CP and extracorporeal membrane oxygenation. Corticosteroids and intravenous immunoglobulin were initiated empirically for presumed inflammatory myocarditis. Chest wall biopsy grew Group A Streptococcus, supporting the diagnosis of streptococcal toxic shock syndrome (STSS). Ultimately, she recovered cardiac function with mechanical circulatory support and targeted antimicrobial therapy. DISCUSSION: This case highlights severe, reversible myocardial dysfunction because of STSS. TAKE-HOME MESSAGE: STSS can precipitate severe, reversible myocardial dysfunction representing a mixed septic-cardiogenic phenotype that may mimic fulminant myocarditis.
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Dod et al. (2026) conducted a case report in Streptococcal toxic shock syndrome with severe myocardial dysfunction (n=1). Mechanical circulatory support (Impella CP and ECMO) and targeted antimicrobial therapy was evaluated on Recovery of cardiac function. Mechanical circulatory support with Impella CP and ECMO plus targeted antimicrobial therapy led to cardiac recovery in a 19-year-old woman with streptococcal toxic shock syndrome.
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