Septal vs. Apical Pacing: A Matter of Time

Molina, L; Lara, Susano; Limon, F

doi:10.1016/j.eupc.2005.08.154

Cited by 1 publication

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“…Septal stimulation represents a simple alternative, with no extra cost and potential advantages over other sites, since the QRS complex obtained in this position is more physiologically normal in relation to electrical axis and length [31][32][33][34] . Nonetheless, most studies involve a small patient sample with no randomization and the criteria used to define the stimulation site can result in the evaluation of heterogeneous groups.…”

Section: Methodsmentioning

confidence: 99%

One-year cardiac morphological and functional evolution following permanent pacemaker implantation in right ventricular septal position in chagasic patients

Júnior

Maeda

Borges

et al. 2012

Rev. Soc. Bras. Med. Trop.

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Introduction: The septal position is an alternative site for cardiac pacing (CP) that is potentially less harmful to cardiac function. Methods: Patients with Chagas disease without heart failure submitted to permanent pacemaker (PP) implantation at the Clinics Hospital of the Triângulo Mineiro Federal University (UFTM), were selected from February 2009 to February 2010. The parameters analyzed were ventricular remodeling, the degree of electromechanical dyssynchrony (DEM), exercise time and VO2 max during exercise testing (ET) and functional class (NYHA). Echocardiography was performed 24 to 48h following implantation and after one year follow-up. The patients were submitted to ET one month postprocedure and at the end of one year. Results: Thirty patients were included. Patient mean age was 59±13 yearsold. Indication for PP implantation was complete atrioventricular (AV) block in 22 (73.3%) patients and 2 nd degree AV block in the other eight (26.7%). All patients were in NYHA I and no changes occurred in the ET parameters. No variations were detected in echocardiographic remodeling measurements. Intraventricular dyssynchrony was observed in 46.6% of cases and interventricular dyssynchrony in 33.3% of patients after one year. Conclusions: The findings of this work suggest that there is not significant morphological and functional cardiac change following pacemaker implantation in septal position in chagasic patients with normal left ventricular function after one year follow-up. Thus, patients may remain asymptomatic, presenting maintenance of functional capacity and no left ventricular remodeling.

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Section: Methodsmentioning

confidence: 99%