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Ablation of Ischemic Ventricular Tachycardia Using a Multipolar Catheter and 3-dimensional Mapping System for High-density Electro-anatomical Reconstruction
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Published on: January 31, 2019

Conventional ventricular stimulation effects on patients with normal ventricular function.

Luiz Antonio Batista de Sá1, Salvador Rassi, Márcia Andery Ludovico Batista

  • 1Hospital das Clínicas, Universidade Federal de Goiás, Goiânia, GO, Brasil. luiz.sa@cardiol.br

Arquivos Brasileiros De Cardiologia
|October 20, 2009
PubMed
Summary
This summary is machine-generated.

Right ventricle pacing in patients with normal heart function did not show clinical or lab changes, but a walk test worsened over time. Quality of life improved in some aspects.

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Devices

Background:

  • Right ventricle (RV) stimulation may harm patients with ventricular dysfunction.
  • Limited evidence exists on RV stimulation's impact on patients with normal ventricular function.

Purpose of the Study:

  • To evaluate the clinical and laboratory outcomes of patients with normal ventricular function undergoing artificial cardiac pacemaker implantation.
  • To assess the effects of pacemaker stimulation on ventricular function and patient well-being.

Main Methods:

  • Prospective study of 16 patients with normal ventricular function and >90% RV pacing.
  • Assessed Functional Class, walk test, BNP, echocardiography (conventional and dyssynchrony), and SF36 quality of life.
  • Evaluations conducted at 10, 120, and 240 days post-implantation.

Main Results:

  • No significant changes in functional class, BNP levels, conventional echocardiography, or intraventricular dyssynchrony.
  • A statistically significant worsening was observed in the walk test and septal-to-left-ventricle contraction time.
  • Quality of life scores improved in functional capacity, social aspects, and general status.

Conclusions:

  • After 8 months, patients with normal ventricular function showed no clinical or laboratory decline due to pacemaker implantation.
  • Despite stable cardiac function markers, a decline in exercise capacity (walk test) was noted.
  • Pacemaker use in this cohort did not lead to significant adverse clinical or echocardiographic findings.