Prognostic relevance of new onset arrhythmia and ICD shocks in primary prophylactic ICD patients.
Clin Res Cardiol
; 109(1): 89-95, 2020 Jan.
Article
em En
| MEDLINE
| ID: mdl-31087157
ABSTRACT
BACKGROUND:
The prognostic relevance of new onset arrhythmias compared to ICD shocks in ICD patients is not well known.OBJECTIVES:
Aim of the study was to evaluate the prognostic relevance of new onset atrial fibrillation (AF) or ventricular arrhythmias (VT/VF) compared to ICD shocks in primary prophylactic ICD-patients.METHODS:
A total of 622 of 1955 (32%) patients of the prospective single-centre ICD-registry Ludwigshafen with primary prophylactic ICD indication and sinus rhythm (SR) at baseline without history of AF were analyzed. All patients underwent an ICD implantation between 1992 and 2012.RESULTS:
During the median follow-up time of 6 years, 200 (32%) ICD patients developed new AF and 249 (40%) patients new VT/VF. There was an approximately 10% increase of 5-year mortality rate depending on the type of new onset arrhythmia (no arrhythmia 19%, new AF 28%, new VT 36% and new VF 55% 5-year mortality). In a multivariate analysis, new onset of AF or VT/VF was an independent predictor for increased mortality whereas VT shocks and inappropriate ICD shocks were not.CONCLUSION:
More than half of primary prophylactic ICD patients with SR at baseline develop new AF or VT/VF after 6 years. New onset arrhythmias of AF and VT/VF are independent prognostic factors for increased mortality in primary prophylactic ICD patients. ICD shocks itself, inappropriate or appropriate, are not additionally associated with a worse outcome. These results support the hypothesis that in clinical practice rather the arrhythmia than the ICD shock itself is responsible for a deteriorated prognosis.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fibrilação Atrial
/
Fibrilação Ventricular
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Taquicardia Ventricular
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Desfibriladores Implantáveis
Tipo de estudo:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Aged
/
Female
/
Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article