The paper describes the fundamental indications and procedures far implanti
ng permanent pacemakers via the endocardial method. The surgical permanent
pacemaker implantation was performed on four dogs of different breeds, with
serious clinical symptoms of bradycardia and restrictions of the dogs' day
to day activities. Routine treatment was not successful. After recording h
istorical data; the dogs were clinically examined and then extra tests were
made: ECG, RTG of the thorax, heart echography, morphological and some sel
ected biochemical blood plasma parameters. The tests were performed with th
e animals under anesthesia.
Pacemakers were placed on the neck, and the endocardial electrodes inserted
through the vein like a catheter into the right ventricle and implanted th
ere. All the dogs had permanent pacemakers successfully implanted by the en
docardial method and their clinical status was improved.