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The AV-reentrant tachycardia was believed to be the cause of both syncopal attacks and inappropriate shocks. The patient has been asymptomatic after ablation of the accessory pathway. To the best of our knowledge, this is the first report of induction of an AV-reentrant tachycardia by a high-voltage implantable cardioverter defibrillator shock. (PACE 2010; 33:372�C376) ""Background: There are no upper age restrictions for implantable defibrillators (ICDs) but their benefit may be limited in patients �� 80 years with strong competing risks of early mortality. Risk factors for early (1-year) mortality in ICD recipients �� 80 years of age have not been established. Methods: Two-center retrospective http://www.selleck.cn/products/ly2157299.html cohort study to assess predictors of one-year mortality in ICD recipients �� 80 years of age. Results: Of 2,967 ICDs implanted in the two centers from 1990�C2006, 225 (7.6%) patients were ��80 years of age and followed-up at one of the two centers. Mean age was 83.3 �� 3.1 years and follow-up time 3.3 �� 2.6 years. Median survival was 3.6 years (95% confidence interval 2.3�C4.9). Multivariate predictors of 1-year mortality included ejection fraction (EF) �� 20% and the absence of beta-blocker use. Actuarial 1-year mortality of ICD recipients �� 80 with an EF �� 20% was 38.2% http://www.selleckchem.com/products/dabrafenib-gsk2118436.html versus 13.1% in patients 80+ years with an EF > 20% and 10.6% for patients http://www.selleckchem.com/products/sch772984.html markers may identify AF patients at risk for dementia either directly or through a gene-gene interaction with the ApoE ��4 variant, a known marker of dementia risk. Caucasian patients with AF and a subsequent dementia diagnosis (n = 112) were matched 1:2 on sex, AF onset age, and follow-up period to AF patients without dementia. AF patients with dementia and AF patients without dementia were matched 1:1 on sex and age at dementia diagnosis (n = 112). Genotyping employed Taqman real-time polymerase chain reaction. Multivariable conditional logistic regression was used to examine associations between AF/dementia groups and single nucleotide polymorphism (SNP), as well as gene-gene interactions.