[Permanent septal pacing in patients suffering secondary heart failure compared to right ventricular apical pacing].

Autor:	Chávez-González E; Departamento de Electrofisiología y Estimulación Cardiaca, Cardiocentro Ernesto Che Guevara, Facultad de Medicina, Universidad de Ciencias Médicas, Santa Clara, Villa Clara, Cuba. Electronic address: elibetcg@infomed.sld.cu., Barja LD; Servicio de Electrofisiología y Marcapasos, Hospital Universitario Austral, Buenos Aires, Argentina., Ortega DF; Servicio de Electrofisiología y Marcapasos, Hospital Universitario Austral, Buenos Aires, Argentina., Pérez-Rodríguez A; Servicio de Cardiología, Hospital Universitario Arnaldo Milián Castro, Facultad de Medicina, Universidad Médica Dr. Serafín Ruiz de Zárate Ruiz, Santa Clara, Villa Clara, Cuba.
Jazyk:	Spanish; Castilian
Zdroj:	Archivos de cardiologia de Mexico [Arch Cardiol Mex] 2018 Dec; Vol. 88 (5), pp. 474-482. Date of Electronic Publication: 2018 Jul 17.
DOI:	10.1016/j.acmx.2018.05.008
Abstrakt:	Introduction: Regardless of the type of electrical stimulation (VVI or DDD) the highest percentage of right ventricular apical pacing can cause left ventricular failure. For this reason, studies have been performed in different sites on right ventricle pacing. Objective: To describe differences between electrocardiography and echocardiography variables during right ventricular apical pacing and septal pacing. Methods: A total of 24 patients were studied, 2 women and 22 men, with heart failure due to conventional pacing on right ventricular (ejection fraction ≤ 35%). An electrocardiogram as well as an echocardiogram, was performed during right ventricular apical pacing and when patients were paced on septal area. Results: The ejection fraction increased from 31 ± 3.1% to 45 ± 12% (P=.0041) on septal pacing, showing higher degree of mechanic synchronisation. Conclusions: Pacing on septal area could be a good site for those patients that suffer heart failure due to right ventricular apical pacing. These must show narrow QRS on their intrinsic electrocardiographic conduction. This kind of pacing can produce an improvement in electromechanical synchronisation, as well as show an increased left ventricular ejection fraction. (Copyright © 2018 Instituto Nacional de Cardiología Ignacio Chávez. Publicado por Masson Doyma México S.A. All rights reserved.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu