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2. Taiwan Heart Rhythm Society1029THRS VOL.0112 201391 Promising results from lead-free pacemaker - Matthew Bonner '' 1 cc ) 10 16 ( )R ( ) 0.24R EUROPACEMeta- analysis shows no impact on mortality for defibrillation threshold test in ICD patient (ICD)Defibrillation threshold test (DFT) (ICD) (DFT) DFT 33% 68%DFT Stavos StavrakisICD DFTStavrakis MEDLINEEMBASE 5020ICDDFT 3,068DFT1,952DFT DFT DFT DFTDFT (risk ratio [RR] = 0.94, 95% CI = 0.74-1.21, P=0.65) (RR = 1.19, 95% CI programmer DOO modeoutput 7cmx5cmMRI DOO mode MRI conditional dual chamber single chamber 1.5T(Tesla)SAR() 2W/kg 4W/kg Cardiac Resynchronization Therapy, CRTImplantable Cardioverter Debrillator, ICD 3. Taiwan Heart Rhythm Society1029VOL.011 3THRS = 0.85-1.68, P=0.30) Stavrakis 24DFT DFT DFT DFT ICD Stavrakis DFT (CRT) CRT: No benet, even harm, in narrow QRS heart failureCRT QRSEchoCRT 130QRS Johannes Holzmeister CRTEchoCRT CRT QRS QRS QRS120 CRT The Echocardiography Guided Cardiac Resynchronized Therapy (EchoCRT) CRT QRS NYHA 809LVEF 35%35% 11CRT (n = 404)n = 405)CRT 11519.4 CRT28.7% 25.2%CRT11.1%vs.6.4% CRT9.2%4.2% CRT QRS130130 CRT Dronedarone Amiodarone 13-19 Dronedarone 2009NEJM ATHENA trial 3 37 551 4628(paroxysmal) (persistent) Dronedarone 400mg BID21 Dronedarone placebo (HR = 0.74, 95% CI = 0.67-0.82, P