Update on Lyme Carditis.

Lyme carditis is an uncommon manifestation of infection with Borrelia bugdorferi. It is easily treated with standard antibiotic regimens and prognosis is excellent, especially if treatment is prompt. For symptomatic or higher degrees of block, patients may require hospitalization for monitoring and occasionally temporary external pacing. Intravenous antibiotics are warranted for such patients. For less severe conduction disturbances, oral therapy suffices.