COMMON FORM OF LYME BORRELIOSIS CARDITIS - COMPLETE HEART-BLOCK WITH SYNCOPE - REPORT ON 3 CASES

Third degree atrioventricular (AV) heart block with severe Adams-Stoke s attacks in 3 patients with Lyme borreliosis is described. All patien ts had similar clinical manifestations: previously healthy, they exper ienced syncope as an abrupt onset of the disease. Data on skin changes - erythema migrans - was subsequently obtained, although the patients did not recall being bitten by a tick. Diagnoses were based on clinic al manifestations and on positive serologic test results to borrelia. Following AV block returned to sinus rhythm with normal AV conduction in all patients.