Effectiveness of epicardial atrial pacing using a bipolar steroid-eluting endocardial lead with active fixation in an experimental model
Acta cir. bras
;
28(7): 543-550, July 2013. ilus, graf, tab
Artículo
en Inglés
| LILACS
| ID: lil-679088
ABSTRACT
PURPOSE:
To assess the effectiveness of bipolar epicardial atrial pacing using an active fixation bipolar endocardial lead implanted on the atrial surface in an experimental model.METHODS:
A total of ten Large White adult pigs underwent pacemaker implantation under general anesthesia. Atrial pacing and sensing parameters were obtained at the procedure, immediate postoperative period and on the 7th and the 30th postoperative in unipolar and bipolar configurations.RESULTS:
All procedures were successfully performed. There were no perioperative complications and no early deaths. Atrial pacing and sensing parameters for both unipolar and bipolar modes remained stable throughout the study. We observed a progressive increase in atrial thresholds, ranging from 0.49 ± 0.35 (at implantation) to 1.86 ± 1.31 volts (30th postoperative day), in unipolar mode. Atrial impedance measurements decreased slightly over time, ranging from 486.80 ± 126.35 Ohms (at implantation) to 385.0 ± 80.52 Ohms (30th postoperative day). Atrial sensing measures remained stable from the immediate postoperative period until the end of the study.CONCLUSION:
The bipolar active fixation endocardial lead implanted epicardially can provide stable conditions of pacing and sensing parameters throughout the postoperative follow-up.
Texto completo:
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Índice:
LILACS (Américas)
Asunto principal:
Marcapaso Artificial
/
Esteroides
/
Estimulación Cardíaca Artificial
/
Electrodos Implantados
/
Diseño de Equipo
/
Atrios Cardíacos
Tipo de estudio:
Estudios de evaluación
/
Estudio pronóstico
Límite:
Animales
Idioma:
Inglés
Revista:
Acta cir. bras
Asunto de la revista:
Cirugía General
/
Procedimentos Cir£rgicos Operat¢rios
Año:
2013
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
USP/BR
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