The aim of the present study was to standardize an experimental model for artificial atrial heart pacing in rabbits. Twenty rabbits(Norfolk-2000, both sexes with minimum weigth of 2200g) were studied. After endovenous anesthesia with pentobarbital sodium(30mg/Kg) the external jugular vein was dissected and a pacemaker lead(Ethicon<FONT FACE="Symbol">â</font> ) was introduced through left cava vein until the rigth atriun. The eletric parameters(P wave, resistance and threshold) were accomplished at surgical time and at 7, 14 and 21 post-operative day. These experimental moments were denominated M1, M2, M3 and M4 respectively. The statistical analisys showed significant difference between M1 and all others experimental moments. The results are compatible with the actual knowlodge of artificial heart pacing in others animal species and in human beings. The present model showed to be viable for artificial pacing studies.
Cardiac pacing artificial; Pacemaker artificial; Experimental surgery
