@entity4710 in a @entity1 with XXXX associated with @entity1121 .

@entity1 @entity1619 @entity1184 @entity591 @entity4346 @entity4710 @entity1121 @entity14336
Electrophysiologic study of a 55-year-old @entity1 with @entity14336 associated with @entity1121 is reported. The @entity1 had a history of recurrent attacks of @entity591 and his electrocardiogram showed a short P-R interval (0.10 sec) with narrow QRS complex and @entity4346 with @entity1619 waves. His cineangiogram showed severe apical @entity1184 . An electrophysiologic study was performed. The results of programmed atrial pacing show the existence of the dual A-V nodal pathways. The A-H interval at rapid atrial pacing increased maximally by 103 msec. Atrial stimulation could depolarize parts of the atrium without altering the @entity4710 . These findings suggested that preferential rapidly conducting A-V nodal and intranodal reentry are the responsible mechanisms in this reciprocating @entity591 . We conclude that the short P-R interval was due to intranodal reentry through the dual A-V nodal pathways. To our knowledge, a case of @entity14336 with @entity1121 has not been previously described in the literature.
