[The use of pace-makers with programmable frequency in the control of XXXX ventricular "refractory" @entity943 (author's transl)].

@entity1 @entity712 @entity13675 @entity301 @entity71 @entity943
The electrophysiological basis of the treatment of @entity71 "refractory" @entity943 with rate - programmable pacemakers, stems from the pacing-inducted electrophysiological modifications with higher and time programmable threshold rates being obtainable to suppress the @entity943 . Furthermore antiarrhythmic agents, that must be generally associated, are more safely employed. This is a new application in clinical arrhythmology of a particular type of permanent pacemaker whose classic indications are well known. The Authors report their experience relative to 16 selected @entity1 affected by severe @entity13675 . Three types of pacemakers were employed: Omnis Stanicor Cordis; Microlith C.P.I.; and Byrel A-V Sequential, Medtronic. The results, in term of the suppression of the @entity943 , were encouraging. The most striking problem is to match the "rate threshold" for the suppression of the @entity943 with the @entity1 's hemodynamic tolerance: not infrequently in fact the programmed rates are poorly tolerated by the @entity1 either because of @entity712 or due to @entity301 . These @entity1 need frequent adjustment of the stimulation rate. The availability of rate programmable pacemakers with steps of one beat per minute, of A-V sequential stimulation and, when feasible of atrial stimulation, undoubtedly plays an important role in clinical arrhythmology.
