Predictors of Arrhythmic Events Detected by Implantable Loop Recorders in Renal Transplant Candidates
AbstractBackground:The recording of arrhythmic events (AE) in renal transplant candidates (RTCs) undergoing dialysis is limited by conventional electrocardiography. However, continuous cardiac rhythm monitoring seems to be more appropriate due to automatic detection of arrhythmia, but this method ha...
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Sociedade Brasileira de Cardiologia (SBC)
2015-11-01
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doaj-1bea882941404dcb870d84b0ded1ae392020-11-24T23:18:51ZengSociedade Brasileira de Cardiologia (SBC)Arquivos Brasileiros de Cardiologia1678-41702015-11-01105549350210.5935/abc.20150106S0066-782X2015002400493Predictors of Arrhythmic Events Detected by Implantable Loop Recorders in Renal Transplant CandidatesRodrigo Tavares SilvaMartino Martinelli FilhoGiselle de Lima PeixotoJosé Jayme Galvão de LimaSérgio Freitas de SiqueiraRoberto CostaLuís Henrique Wolff GowdakFlávio Jota de PaulaRoberto Kalil FilhoJosé Antônio Franchini RamiresAbstractBackground:The recording of arrhythmic events (AE) in renal transplant candidates (RTCs) undergoing dialysis is limited by conventional electrocardiography. However, continuous cardiac rhythm monitoring seems to be more appropriate due to automatic detection of arrhythmia, but this method has not been used.Objective:We aimed to investigate the incidence and predictors of AE in RTCs using an implantable loop recorder (ILR).Methods:A prospective observational study conducted from June 2009 to January 2011 included 100 consecutive ambulatory RTCs who underwent ILR and were followed-up for at least 1 year. Multivariate logistic regression was applied to define predictors of AE.Results:During a mean follow-up of 424 ± 127 days, AE could be detected in 98% of patients, and 92% had more than one type of arrhythmia, with most considered potentially not serious. Sustained atrial tachycardia and atrial fibrillation occurred in 7% and 13% of patients, respectively, and bradyarrhythmia and non-sustained or sustained ventricular tachycardia (VT) occurred in 25% and 57%, respectively. There were 18 deaths, of which 7 were sudden cardiac events: 3 bradyarrhythmias, 1 ventricular fibrillation, 1 myocardial infarction, and 2 undetermined. The presence of a long QTc (odds ratio [OR] = 7.28; 95% confidence interval [CI], 2.01–26.35; p = 0.002), and the duration of the PR interval (OR = 1.05; 95% CI, 1.02–1.08; p < 0.001) were independently associated with bradyarrhythmias. Left ventricular dilatation (LVD) was independently associated with non-sustained VT (OR = 2.83; 95% CI, 1.01–7.96; p = 0.041).Conclusions:In medium-term follow-up of RTCs, ILR helped detect a high incidence of AE, most of which did not have clinical relevance. The PR interval and presence of long QTc were predictive of bradyarrhythmias, whereas LVD was predictive of non-sustained VT.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2015002400493&lng=en&tlng=enArritmias CardíacasContração MiocárdicaTransplante de RimDesfibriladoresCardioversão Elétrica |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Rodrigo Tavares Silva Martino Martinelli Filho Giselle de Lima Peixoto José Jayme Galvão de Lima Sérgio Freitas de Siqueira Roberto Costa Luís Henrique Wolff Gowdak Flávio Jota de Paula Roberto Kalil Filho José Antônio Franchini Ramires |
spellingShingle |
Rodrigo Tavares Silva Martino Martinelli Filho Giselle de Lima Peixoto José Jayme Galvão de Lima Sérgio Freitas de Siqueira Roberto Costa Luís Henrique Wolff Gowdak Flávio Jota de Paula Roberto Kalil Filho José Antônio Franchini Ramires Predictors of Arrhythmic Events Detected by Implantable Loop Recorders in Renal Transplant Candidates Arquivos Brasileiros de Cardiologia Arritmias Cardíacas Contração Miocárdica Transplante de Rim Desfibriladores Cardioversão Elétrica |
author_facet |
Rodrigo Tavares Silva Martino Martinelli Filho Giselle de Lima Peixoto José Jayme Galvão de Lima Sérgio Freitas de Siqueira Roberto Costa Luís Henrique Wolff Gowdak Flávio Jota de Paula Roberto Kalil Filho José Antônio Franchini Ramires |
author_sort |
Rodrigo Tavares Silva |
title |
Predictors of Arrhythmic Events Detected by Implantable Loop Recorders in Renal Transplant Candidates |
title_short |
Predictors of Arrhythmic Events Detected by Implantable Loop Recorders in Renal Transplant Candidates |
title_full |
Predictors of Arrhythmic Events Detected by Implantable Loop Recorders in Renal Transplant Candidates |
title_fullStr |
Predictors of Arrhythmic Events Detected by Implantable Loop Recorders in Renal Transplant Candidates |
title_full_unstemmed |
Predictors of Arrhythmic Events Detected by Implantable Loop Recorders in Renal Transplant Candidates |
title_sort |
predictors of arrhythmic events detected by implantable loop recorders in renal transplant candidates |
publisher |
Sociedade Brasileira de Cardiologia (SBC) |
series |
Arquivos Brasileiros de Cardiologia |
issn |
1678-4170 |
publishDate |
2015-11-01 |
description |
AbstractBackground:The recording of arrhythmic events (AE) in renal transplant candidates (RTCs) undergoing dialysis is limited by conventional electrocardiography. However, continuous cardiac rhythm monitoring seems to be more appropriate due to automatic detection of arrhythmia, but this method has not been used.Objective:We aimed to investigate the incidence and predictors of AE in RTCs using an implantable loop recorder (ILR).Methods:A prospective observational study conducted from June 2009 to January 2011 included 100 consecutive ambulatory RTCs who underwent ILR and were followed-up for at least 1 year. Multivariate logistic regression was applied to define predictors of AE.Results:During a mean follow-up of 424 ± 127 days, AE could be detected in 98% of patients, and 92% had more than one type of arrhythmia, with most considered potentially not serious. Sustained atrial tachycardia and atrial fibrillation occurred in 7% and 13% of patients, respectively, and bradyarrhythmia and non-sustained or sustained ventricular tachycardia (VT) occurred in 25% and 57%, respectively. There were 18 deaths, of which 7 were sudden cardiac events: 3 bradyarrhythmias, 1 ventricular fibrillation, 1 myocardial infarction, and 2 undetermined. The presence of a long QTc (odds ratio [OR] = 7.28; 95% confidence interval [CI], 2.01–26.35; p = 0.002), and the duration of the PR interval (OR = 1.05; 95% CI, 1.02–1.08; p < 0.001) were independently associated with bradyarrhythmias. Left ventricular dilatation (LVD) was independently associated with non-sustained VT (OR = 2.83; 95% CI, 1.01–7.96; p = 0.041).Conclusions:In medium-term follow-up of RTCs, ILR helped detect a high incidence of AE, most of which did not have clinical relevance. The PR interval and presence of long QTc were predictive of bradyarrhythmias, whereas LVD was predictive of non-sustained VT. |
topic |
Arritmias Cardíacas Contração Miocárdica Transplante de Rim Desfibriladores Cardioversão Elétrica |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2015002400493&lng=en&tlng=en |
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