Key result
COVID-19 linked to recurrent paroxysmal AV block requiring permanent pacing without significant myocardial injury.
Case Report (n=1)
No
COVID-19 may be associated with unusual myocardial involvement presenting as paroxysmal atrioventricular block in relatively young patients without significant comorbidities.
May signal isolated conduction involvement in COVID-19; hypothesis-generating and requires larger studies before clinical adoption.
Cardiac involvement has been reported in patients with coronavirus disease 2019 (COVID-19). We herein report a 41-year-old man who presented with recurrent paroxysmal atrioventricular block without showing significant cardiac injuries or comorbidities. The patient was diagnosed with COVID-19 and admitted to our hospital, where he was noted to have paroxysmal atrioventricular block. Cardiac biomarkers, echocardiography, and cardiac magnetic resonance imaging findings were fairly normal. An endomyocardial biopsy performed before the implantation of a permanent pacemaker revealed mild myocardial fibrosis without inflammatory infiltrates. The unusual myocardial involvement of the novel coronavirus was suspected.
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Abe et al. (2021) conducted a case report in COVID-19 and paroxysmal atrioventricular block (n=1). COVID-19 was evaluated. A 41-year-old man with COVID-19 developed recurrent paroxysmal atrioventricular block without significant myocardial injury, requiring permanent pacemaker implantation.
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