Arq. Bras. Cardiol. 2024; 121(10): e20240301
Lyme Carditis: An Infectious Cause of Atrioventricular Block – A Case Report
Eduardo Dan Itaya
, Danilo Hantschick Fernandes Monteiro, Gabriela Coelho Itaya, Nathan Kong, Andre d’Avila
Introduction
Lyme disease (LD) is the most common tick-borne illness in the United States, caused by the spirochete Borrelia burgdorferi. The most common presentation is the erythema migrans skin rash, observed in over 90% of cases during the early localized stage., Weeks to months post-tick bite, the disease may progress to extracutaneous manifestations in the early disseminated phase, leading to cardiac, neurologic, and joint symptoms.,
Lyme carditis (LC) is a rare complication of LD, occurring in 0.3% to 4% of untreated adults., The most prominent manifestations are conduction system disturbances involving the atrioventricular (AV) node, often presenting as high-degree AV block (AVB).
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Keywords: Atrioventricular Block; Borrelia; Lyme Disease
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