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type=\u0022text\/css\u0022 rel=\u0022stylesheet\u0022 href=\u0022\/\/d282kpwvnogo5m.cloudfront.net\/sites\/default\/files\/advagg_css\/css__ce2QY63WIanKyr8eSq7eavr1XQRRmFD6ZSmwpyJi8lM__zXwFqpqmxrZOXXcd_TpBQpjuELbmIP9wBR5UuTDWAO4__YJWWMMdfCJuAFm5cUEp88OsodhO3ZA-2lzRfoBsSlk4.css\u0022 media=\u0022all\u0022 \/\u003E\n\u003Clink rel=\u0027stylesheet\u0027 type=\u0027text\/css\u0027 href=\u0027\/sites\/all\/modules\/contrib\/panels\/plugins\/layouts\/onecol\/onecol.css\u0027 \/\u003E\u003C\/head\u003E\u003Cbody\u003E\u003Cdiv class=\u0022panels-ajax-tab-panel panels-ajax-tab-panel-sageoa-tab-art\u0022\u003E\u003Cdiv class=\u0022panel-display panel-1col clearfix\u0022 \u003E\n  \u003Cdiv class=\u0022panel-panel panel-col\u0022\u003E\n    \u003Cdiv\u003E\u003Cdiv class=\u0022panel-pane pane-highwire-markup\u0022 \u003E\n  \n      \n  \n  \u003Cdiv class=\u0022pane-content\u0022\u003E\n    \u003Cdiv class=\u0022highwire-markup\u0022\u003E\u003Cdiv xmlns=\u0022http:\/\/www.w3.org\/1999\/xhtml\u0022 id=\u0022content-block-markup\u0022 xmlns:xhtml=\u0022http:\/\/www.w3.org\/1999\/xhtml\u0022\u003E\u003Cdiv class=\u0022article fulltext-view \u0022\u003E\u003Cspan class=\u0022highwire-journal-article-marker-start\u0022\u003E\u003C\/span\u003E\u003Cdiv class=\u0022section abstract\u0022 id=\u0022abstract-1\u0022\u003E\u003Ch2\u003ESummary\u003C\/h2\u003E\n            \u003Cp id=\u0022p-1\u0022\u003EThe frequency of sudden cardiac arrest (SCA) is inversely related to left ventricular function; yet, many events occur in patients with ejection fraction \u0026gt;35% who are not candidates for an implanted cardioverter defibrillator. The aim of the Prediction of Arrhythmic Events with Positron Emission Tomography study [PAREPET] [Fallavollita JA et al. \u003Cem\u003EContemp Clin Trials\u003C\/em\u003E 2006] was to determine if the risk of SCA in medically treated patients with Class I\u2014III heart failure can be predicted by the volume of denervated, hibernating, or infarcted myocardium.\u003C\/p\u003E\n         \u003C\/div\u003E\u003Cul class=\u0022kwd-group\u0022\u003E\u003Cli class=\u0022kwd\u0022\u003EInterventional Techniques \u0026amp; Devices\u003C\/li\u003E\u003Cli class=\u0022kwd\u0022\u003EPrevention \u0026amp; Screening Clinical Trials\u003C\/li\u003E\u003Cli class=\u0022kwd\u0022\u003ECardiac Imaging Techniques\u003C\/li\u003E\u003Cli class=\u0022kwd\u0022\u003EImaging Modalities\u003C\/li\u003E\u003Cli class=\u0022kwd\u0022\u003ERadiography\u003C\/li\u003E\u003Cli class=\u0022kwd\u0022\u003EHeart Failure\u003C\/li\u003E\u003C\/ul\u003E\u003Cp id=\u0022p-2\u0022\u003EThe frequency of sudden cardiac arrest (SCA) is inversely related to left ventricular (LV) function; yet, many events occur in patients with ejection fraction (EF) \u0026gt;35% who are not candidates for an implanted cardioverter defibrillator (ICD). The aim of the Prediction of Arrhythmic Events with Positron Emission Tomography study [PAREPET] [Fallavollita JA et al. \u003Cem\u003EContemp Clin Trials\u003C\/em\u003E 2006] was to determine if the risk of SCA in medically treated patients with Class I\u2013III heart failure (HF) can be predicted by the volume of denervated, hibernating, or infarcted myocardium. James A. Fallavollita, MD, University of Buffalo, Buffalo, New York, USA, presented recent findings.\u003C\/p\u003E\u003Cp id=\u0022p-3\u0022\u003EA total of 204 patients with coronary artery disease (CAD) who were eligible for an ICD for the primary prevention of SCA were enrolled and evaluated with positron emission tomography (PET), transthoracic echocardiography, and telephone follow-up every 3 months. At baseline, patients with prior SCA (n=33) had a mean age of 66\u00b18 years, New York Heart Association (NYHA) functional class of 2.3\u00b10.6, and LVEF of 25%\u00b19%. Patients without prior SCA (n=171) had a mean age of 67\u00b112 years, NYHA functional class of 2.1\u00b10.8, and an EF of 28%\u00b19%. The primary endpoint was SCA (arrhythmic death or ICD discharge for ventricular fibrillation or ventricular tachycardia \u0026gt;240 beats per minute). The secondary endpoint was total cardiac mortality.\u003C\/p\u003E\u003Cp id=\u0022p-4\u0022\u003EPatients with \u0026gt;33% denervated LV myocardium had a significantly higher rate of subsequent SCA events (6.7% per year) compared with patients with 22% to 23% denervated myocardium (2.2% per year) and \u0026lt;22% denervated myocardium (1.2% per year; p=0.001; \u003Ca id=\u0022xref-fig-1-1\u0022 class=\u0022xref-fig\u0022 href=\u0022#F1\u0022\u003EFigure 1\u003C\/a\u003E). As continuous variables, there was no correlation between the volume of infarcted or hibernating myocardium and SCA event-free survival. Multivariate analysis showed that \u0026gt;38% denervated LV myocardium was an independent predictor of SCA (HR, 3.5; p=0.009). Other independent predictors of SCA were LV end-diastolic volume index \u0026gt;98 mL\/m\u003Csup\u003E2\u003C\/sup\u003E (HR, 5.7; p\u0026lt;0.001), no angiotensin-converting enzyme inhibitor or aldosterone receptor antagonist therapy (HR, 6.8; p=0.003), and creatinine \u0026gt;1.5 mg\/dL (HR, 3.1; p=0.005). The risk for SCA progressively increased with the number of risk factors (p\u0026lt;0.0001; \u003Ca id=\u0022xref-fig-2-1\u0022 class=\u0022xref-fig\u0022 href=\u0022#F2\u0022\u003EFigure 2\u003C\/a\u003E) and was \u223c12% per year among the 20% of the cohort with 2 or more risk factors. Perhaps more importantly, the 44% of the cohort with none of the risk factors had a very low risk of SCA, averaging \u0026lt;1% per year.\u003C\/p\u003E\u003Cdiv id=\u0022F1\u0022 class=\u0022fig pos-float  odd\u0022\u003E\u003Cdiv class=\u0022highwire-figure\u0022\u003E\u003Cdiv class=\u0022fig-inline-img-wrapper\u0022\u003E\u003Cdiv class=\u0022fig-inline-img\u0022\u003E\u003Ca href=\u0022http:\/\/d282kpwvnogo5m.cloudfront.net\/content\/spmdc\/12\/6\/11\/F1.large.jpg?width=800\u0026amp;height=600\u0026amp;carousel=1\u0022 title=\u0022PET Parameters and SCA.\u0022 class=\u0022fragment-images colorbox-load\u0022 rel=\u0022gallery-fragment-images-1376667321\u0022 data-figure-caption=\u0022PET Parameters and SCA.\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003E\u003Cimg class=\u0022fragment-image\u0022 alt=\u0022Figure 1.\u0022 src=\u0022http:\/\/d282kpwvnogo5m.cloudfront.net\/content\/spmdc\/12\/6\/11\/F1.medium.gif\u0022\/\u003E\u003C\/a\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cul class=\u0022highwire-figure-links inline\u0022\u003E\u003Cli class=\u00220 first\u0022\u003E\u003Ca href=\u0022http:\/\/d282kpwvnogo5m.cloudfront.net\/content\/spmdc\/12\/6\/11\/F1.large.jpg?download=true\u0022 class=\u0022highwire-figure-link highwire-figure-link-download\u0022 title=\u0022Download Figure 1.\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EDownload figure\u003C\/a\u003E\u003C\/li\u003E\u003Cli class=\u00221\u0022\u003E\u003Ca href=\u0022http:\/\/d282kpwvnogo5m.cloudfront.net\/content\/spmdc\/12\/6\/11\/F1.large.jpg\u0022 class=\u0022highwire-figure-link highwire-figure-link-newtab\u0022 target=\u0022_blank\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EOpen in new tab\u003C\/a\u003E\u003C\/li\u003E\u003Cli class=\u00222 last\u0022\u003E\u003Ca href=\u0022\/highwire\/powerpoint\/14303\u0022 class=\u0022highwire-figure-link highwire-figure-link-ppt\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EDownload powerpoint\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\u003C\/div\u003E\u003Cdiv class=\u0022fig-caption attrib\u0022\u003E\u003Cspan class=\u0022fig-label\u0022\u003EFigure 1.\u003C\/span\u003E \n            \u003Cp id=\u0022p-5\u0022 class=\u0022first-child\u0022\u003EPET Parameters and SCA.\u003C\/p\u003E\n         \u003Cq class=\u0022attrib\u0022 id=\u0022attrib-1\u0022\u003ELV=left ventricular; PET=positron emission tomography; SCA=sudden cardiac arrest.\u003C\/q\u003E\u003Cq class=\u0022attrib\u0022 id=\u0022attrib-2\u0022\u003EReproduced with permission from JA Fallavollita, MD.\u003C\/q\u003E\u003Cdiv class=\u0022sb-div caption-clear\u0022\u003E\u003C\/div\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cdiv id=\u0022F2\u0022 class=\u0022fig pos-float  odd\u0022\u003E\u003Cdiv class=\u0022highwire-figure\u0022\u003E\u003Cdiv class=\u0022fig-inline-img-wrapper\u0022\u003E\u003Cdiv class=\u0022fig-inline-img\u0022\u003E\u003Ca href=\u0022http:\/\/d282kpwvnogo5m.cloudfront.net\/content\/spmdc\/12\/6\/11\/F2.large.jpg?width=800\u0026amp;height=600\u0026amp;carousel=1\u0022 title=\u0022Independent High-Risk Predictors of SCA.\u0022 class=\u0022fragment-images colorbox-load\u0022 rel=\u0022gallery-fragment-images-1376667321\u0022 data-figure-caption=\u0022Independent High-Risk Predictors of SCA.\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003E\u003Cimg class=\u0022fragment-image\u0022 alt=\u0022Figure 2.\u0022 src=\u0022http:\/\/d282kpwvnogo5m.cloudfront.net\/content\/spmdc\/12\/6\/11\/F2.medium.gif\u0022\/\u003E\u003C\/a\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cul class=\u0022highwire-figure-links inline\u0022\u003E\u003Cli class=\u00220 first\u0022\u003E\u003Ca href=\u0022http:\/\/d282kpwvnogo5m.cloudfront.net\/content\/spmdc\/12\/6\/11\/F2.large.jpg?download=true\u0022 class=\u0022highwire-figure-link highwire-figure-link-download\u0022 title=\u0022Download Figure 2.\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EDownload figure\u003C\/a\u003E\u003C\/li\u003E\u003Cli class=\u00221\u0022\u003E\u003Ca href=\u0022http:\/\/d282kpwvnogo5m.cloudfront.net\/content\/spmdc\/12\/6\/11\/F2.large.jpg\u0022 class=\u0022highwire-figure-link highwire-figure-link-newtab\u0022 target=\u0022_blank\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EOpen in new tab\u003C\/a\u003E\u003C\/li\u003E\u003Cli class=\u00222 last\u0022\u003E\u003Ca href=\u0022\/highwire\/powerpoint\/14305\u0022 class=\u0022highwire-figure-link highwire-figure-link-ppt\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EDownload powerpoint\u003C\/a\u003E\u003C\/li\u003E\u003C\/ul\u003E\u003C\/div\u003E\u003Cdiv class=\u0022fig-caption attrib\u0022\u003E\u003Cspan class=\u0022fig-label\u0022\u003EFigure 2.\u003C\/span\u003E \n            \u003Cp id=\u0022p-6\u0022 class=\u0022first-child\u0022\u003EIndependent High-Risk Predictors of SCA.\u003C\/p\u003E\n         \u003Cq class=\u0022attrib\u0022 id=\u0022attrib-3\u0022\u003EACEI=angiotensin-converting enzyme inhibitor; ARA=angiotensin receptor antagonists; LVEDVI=left ventricular end-diastolic volume index.\u003C\/q\u003E\u003Cq class=\u0022attrib\u0022 id=\u0022attrib-4\u0022\u003EReproduced with permission from JA Fallavollita, MD.\u003C\/q\u003E\u003Cdiv class=\u0022sb-div caption-clear\u0022\u003E\u003C\/div\u003E\u003C\/div\u003E\u003C\/div\u003E\u003Cp id=\u0022p-7\u0022\u003EIn patients with ischemic cardiomyopathy who are eligible for an ICD, the volume of denervated myocardium predicts SCA, independent of brain natriuretic peptide, EF, and NYHA class. The volume of infarcted and hibernating myocardium did not predict SCA. Quantitative assessment of denervated myocardium may facilitate more effective targeting of ICDs for primary prevention. Furthermore, the quantification of denervated myocardium has the potential to identify an increased risk of SCA among individuals with more preserved LVEF who are not currently considered candidates for an ICD.\u003C\/p\u003E\u003Cul class=\u0022copyright-statement\u0022\u003E\u003Cli class=\u0022fn\u0022 id=\u0022copyright-statement-1\u0022\u003E\u00a9 2012 MD Conference Express\u003C\/li\u003E\u003C\/ul\u003E\u003Cspan class=\u0022highwire-journal-article-marker-end\u0022\u003E\u003C\/span\u003E\u003C\/div\u003E\u003Cspan id=\u0022related-urls\u0022\u003E\u003C\/span\u003E\u003C\/div\u003E\u003Ca href=\u0022http:\/\/mdc.sagepub.com\/content\/12\/6\/11.abstract\u0022 class=\u0022hw-link hw-link-article-abstract\u0022 data-icon-position=\u0022\u0022 data-hide-link-title=\u00220\u0022\u003EView Summary\u003C\/a\u003E\u003C\/div\u003E  \u003C\/div\u003E\n\n  \n  \u003C\/div\u003E\n\u003C\/div\u003E\n  \u003C\/div\u003E\n\u003C\/div\u003E\n\u003C\/div\u003E\u003Cscript type=\u0022text\/javascript\u0022 src=\u0022http:\/\/mdc.sagepub.com\/sites\/all\/modules\/highwire\/highwire\/plugins\/highwire_markup_process\/js\/highwire_figures.js?nzndq1\u0022\u003E\u003C\/script\u003E\n\u003Cscript type=\u0022text\/javascript\u0022 src=\u0022http:\/\/mdc.sagepub.com\/sites\/all\/modules\/highwire\/highwire\/plugins\/highwire_markup_process\/js\/highwire_openurl.js?nzndq1\u0022\u003E\u003C\/script\u003E\n\u003C\/body\u003E\u003C\/html\u003E"}