Efeitos da estimulação ventricular convencional em pacientes com função ventricular normal

Sá, Luiz Antonio Batista de; Rassi, Salvador; Batista, Márcia Andery Ludovico

doi:10.1590/s0066-782x2009000800016

Cited by 7 publications

(11 citation statements)

References 35 publications

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“…With regard to clinical findings, the results as observed by Sa et al 48 were similar of the present study. Despite the non-use of questionnaires on quality of life, this study showed that patients remained assyntomatic, kepping the functional class I (NYHA).…”

Section: Conflict Of Interest Financial Support Referencessupporting

confidence: 92%

“…Hearts presenting no significant structural alterations and with preserved systolic function may be able to offset the negative impact of mechanical dyssynchrony 48,49 .…”

Section: Discussionmentioning

confidence: 99%

“…Similarly, despite the presence of left ventricular dyssynchrony, there was no appearance of left ventricular remodeling or worsening of physical capacity during follow-up in patients without heart failure [48][49][50] .…”

Section: Discussionmentioning

confidence: 99%

“…The only description of the functional assessment of septal stimulation site in a similar population sample to the present study was carried out by Sa et al 48 . In this study was not detected left ventricular dyssynchrony in eight months of monitoring.…”

Section: Discussionmentioning

confidence: 99%

“…This etiology is of one the main indications for permanent pacemaker implantation in some regions, such as the Triangulo Mineiro region in Minas Gerais and the State of Goiás [15][16][17] . A similar situation is observed in other Latin American countries like Bolivia, where…”

Section: Introductionmentioning

confidence: 99%

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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: Conflict Of Interest Financial Support Referencessupporting

confidence: 92%

“…Hearts presenting no significant structural alterations and with preserved systolic function may be able to offset the negative impact of mechanical dyssynchrony 48,49 .…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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Comparison of early effects of right ventricular apical pacing on left ventricular functions in single and dual chamber pacemakers

Algazzar

Moharram

Katta

et al. 2015

The Egyptian Heart Journal

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Objectives: Our study aimed to demonstrate the early negative impact of right ventricular apical pacing induced by single (VVI) and dual chamber (DDD) pacemakers on LV functions in patients with preserved EF. And to assess that single brain natriuretic peptide (BNP) after 2 months of implantation is correlated to ventricular dyssynchrony. Methods: 40 patients with implanted VVI and DDD pacemakers were examined before implantation and again after 2 and 6 months of implantation for BNP, left ventricular (LV) systolic and diastolic functions by echocardiography and pulsed tissue Doppler. After 6 months, patients with DDD pacemakers were crossed over to VVI mode of pacing for 2 weeks with lower rate programed to 60 beat per minute then sample for BNP was collected again. Results: There was no statistically significant difference in LV systolic and diastolic functions except for myocardial performance index (MPI) with (P value of 0.03). Mean BNP level in VVI pacing was higher than DDD pacing after two months with P value = 0.001 while comparison after 6 months showed P value = 0.023. There was a statistically significant difference between both groups in results of aortic preejection delay (APED) (P value of <0.05). BNP was correlated to APED (r = 0.651 and P value = 0.001) and pacing percentage (r = 0.687 and P value = 0.00). Conclusion: Loss of atrioventricular synchrony in VVI mode leads to a significant difference in LV dyssynchrony between both groups. BNP level is correlated to LV dyssynchrony and pacing percentage. ª 2014 Production and hosting by Elsevier B.V. on behalf of Egyptian Society of Cardiology. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).

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Alternative Sites for Right Ventricular Pacing in Chagas Disease: A Comparative Study of the Mid‐Septum and Inflow Tract

Júnior

Borges

Melo

et al. 2014

Pacing Clinical Electrophis

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Efeitos da estimulação ventricular convencional em pacientes com função ventricular normal

Abstract: SummaryBackground: The stimulation of the right ventricle (RV) may be deleterious in patients with ventricular dysfunction; however there is little evidence about the impact of this stimulation in patients with normal ventricular function.

Cited by 7 publications

References 35 publications

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

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

Comparison of early effects of right ventricular apical pacing on left ventricular functions in single and dual chamber pacemakers

Alternative Sites for Right Ventricular Pacing in Chagas Disease: A Comparative Study of the Mid‐Septum and Inflow Tract

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