Variants of Brugada Syndrome: the evolving picture
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1 2015 Venice Arrhythmia Core Curriculum: Arrhythmogenic genetic syndrome: what s new? Brugada Syndrome: What s new? October 16 th, 2015 Venice, Italy Variants of Brugada Syndrome: the evolving picture Wataru Shimizu M.D., Ph.D. Nippon Medical School, Tokyo, Japan Nippon Medical School
2 Conflicts of Interest: Wataru Shimizu Consulta)on*fees:none stock*ownership/profit:none patent*fees:none remunera)on*for*lecture:daiichi Sankyo., Ltd. Tanabe Mitsubishi Pharma Corporation Nippon Boehringer Ingelheim Co., Ltd. Bayer Yakuhin, Ltd. Bristol-Myers K.K. Pfizer Japan Inc. Ono Pharma Corporation manuscript*fees:none trust*research/joint*research*funds:none scholarship*fund:daiichi Sankyo., Ltd. Tanabe Mitsubishi Pharma Corporation Nippon Boehringer Ingelheim Co., Ltd. Bristol-Myers K.K. Affilia)on*with*Endowed*Department:none
3 Idiopathic VF with J wave and ST elevation in the inferior leads: Brugada Syndrome Variants? TakagiM,ShimizuW.etalJCE2000 KallaH.etalJCE2000 Variants: Inferior type of Brugada Syndrome National Cerebral and Cardiovascular Center Nippon Medical School
4 Early repolarization pattern in infero/lateral leads Sudden cardiac arrest associated with early repolarization (Haissaguerre M. et al NEJM 2008) Early Repolarization Syndrome
5 Idiopathic VF with J wave and ST elevation in the inferior leads: Brugada Syndrome Variants? TakagiM,ShimizuW.etalJCE2000 KallaH.etalJCE2000 This is Early Repolarization Syndrome National Cerebral and Cardiovascular Center Nippon Medical School
6 Japanese Brugada Registry Kamakura S, Shimizu W, et al. Circ Arrhythm Electrophysiol 2009; 2: Early Repolarization in infero-lateral leads Early Repolarization Early Repolarization + P= " Brugada patients associated with early repolarization in infero-lateral leads showed poorer prognosis than those without N. of pts. with early repolarization Early Rep Early Rep National Cerebral and Cardiovascular Center Nippon Medical School
7 Type 1 Brugada patient with infero-lateral ER Kawata H, Shimizu W et al. Heart Rhythm 2013:10: I II HR 64 V1 Type 1 V2 V3 coved III V4 avr avl V5 avf National Cerebral and Cardiovascular Center V6 1 sec 1 mv Nippon Medical School
8 Survival Curve of Brugada patients with VF document depending on presence and frequency of infero-lateral ER Kawata H, Shimizu W et al. Heart Rhythm 2013:10: Free of SCD or VF Log Rank Non ER (N=18) p=0.0001betweenpandn p=0.0595betweeniandn p=0.1124betweenpandi Intermittent ER (N=16) Number of patients Persistent Intermittent Non Follow up duration (months) National Cerebral and Cardiovascular Center Persistent ER (N=15) Nippon Medical School
9 Similarities between Brugada syndrome and ERS Shimizu W et al. Unpublished data Male predominance Late adulthood onset Genotype More frequent ventricular arrhythmias during sleep and rest than during physically active periods Dynamicity of the J-point elevation in an ER pattern and ST-segment elevation in a Brugada ECG Pause- and bradycardia-dependent augmentation of the J-point elevation in the ER pattern and ST-segment elevation in the Brugada ECG Response to pharmacological therapy (Isoproterenol, Quinidine, Bepridil, Denopamine, Cilostazol) National Cerebral and Cardiovascular Center Nippon Medical School
10 J wave syndrome Antzelevitch C. Heart Rhythm. 2010; 7: I KGATP I Na I Ca I to Brugada*syndrome I Na I Ca I KGATP I KGAch Inferolateral*ERS " Brugadasyndrome(BrS)andERSareconsideredtoshareasimilarcharacterisRcsandto representaconrnuousspectrumofphenotypicexpressiontermedjgwavesyndrome.
11 Japanese Brugada Registry Kamakura S, Shimizu W, et al. Circ Arrhythm Electrophysiol 2009; 2: J wave amplitude = 1.6mm (< 2.0mm) Non type 1 ECG V1 Coved type Saddleback type " WealsoreportedinJapaneseBrugadaRegistrythatpaRentswithnonGtype1STG segmentelevaron(erpavern)instandardv1gv2leadsevenaxerdrugprovocaron testshowpoorprognosis,justasparentswithtype1brugadasyndrome. National Cerebral and Cardiovascular Center Nippon Medical School
12 Diagnosis of Brugada Syndrome Priori SG, Wilde AA, Krahn A, Shimizu W, et al. Europace 15(10): , BrSisdiagnosedwhenatypeG1STGsegmentelevaRonisobserved DiagnosRccriteria2005 " Atleast2rightprecordialleads (V 1 tov 3 ) Consensusstatementin2013 " Atleast1rightprecordiallead (V 1 andv 2 ) " Standard12GleadECG " SpontaneouslyoraXerdrug challengetestbyasodium channelblockingagent " Standardora*higher*posi)on* (uptothe2 nd intercostalspace) " SpontaneouslyoraXerdrug challengetestbyasodium channelblockingagent National Cerebral and Cardiovascular Center Nippon Medical School
13 Hypothesis Kamakura S, Shimizu W, et al. Circ Arrhythm Electrophysiol 2009; 2: J wave amplitude = 1.6mm (< 2.0mm) Non type 1 ER pattern V1 Coved type Saddleback type " PaRentswithnonGtype1ER(NT1GER)inhighcostal(2 nd and3 rd )ECGrecordingsmay beanothervariantofbrugadasyndrome. " Therefore,wecomparedtheclinicalprofileandlongGtermprognosisbetween parentswithandwithoutnt1gerinhighcostal(2 nd and3 rd )ECGamonginferoG lateralersparents. National Cerebral and Cardiovascular Center Nippon Medical School
14 Methods Kamakura T, Shimizu W et al. J Am Coll Cardiol 2013; 62: " 31paRents(27men,meanage:42.0±14.1years)withinferoGlateralERSand apriorepisodeofvfweredividedinto2groups. # baselineandhighcostal(2 nd and3 rd )ECGrecordings # drugprovocarontestswithasodiumchannelblocker(pilsicainide1mg/kg) $ ERS[A]Jgroup*(n=12)pa)ents*with*an*inferolateral*ER*combined*with*NT1JER** V 1 GV 3 standard+highcostal $ ERS[B]Jgroup*(n=19)*:*pa)ents*with*pure*inferolateral*ER*without*NT1JER* " ClinicalprofilesandVFrecurrencesduringfollowGupwerecomparedamong ERS(A)group,ERS(B)group,40paRentswithBrugadasyndromeandahistory ofvf(bsgroup),and13parentswithidiopathicvfwithoutjwaves(ivf group). National Cerebral and Cardiovascular Center Nippon Medical School
15 51y.o.Male Baseline 4th 3rd National Cerebral and Cardiovascular Center 2nd STGsegmentaugmentaRon bysodiumchannelblocker ERS (A) group Kamakura T, Shimizu W et al. J Am Coll Cardiol 2013; 62: AXer50mgpilsicainideinjecRon 4th InferolateralER+nonGtype1ERinhighcostalECG VF*recurrence*(+) 3rd 2nd Nippon Medical School
16 39y.o.Male ERS (B) group Kamakura T, Shimizu W et al. J Am Coll Cardiol 2013; 62: Baseline 4th 3rd 2nd PureInferolateralER DisappearanceofER bysodiumchannelblocker VF*recurrence*(J) AXer50mgpilsicainideinjecRon 4th 3rd 2nd National Cerebral and Cardiovascular Center Nippon Medical School
17 Clinical Characteristics Kamakura T, Shimizu W et al. J Am Coll Cardiol 2013; 62: Group ERS(n=31) ERS(A)(n=12)ERS(B)(n=19) BS(n=40) IVF(n=13) Pvalue (A)vs.(B) Age(years) 41.2± ± ± ± Menn,(%) 9(75%) 18(95%) 40(100%) 8(62%) 0.27 FHofSCDn,(%) 1(8%) 0(0%) 8(20%) 2(15%) 0.39 VF/CAduringsleep(%) 10(8,2)(83%) 2(2,0)(11%) 22(17,5)(55%) 1(1,0)(8%) < National Cerebral and Cardiovascular Center Nippon Medical School
18 Clinical Course Kamakura T, Shimizu W et al. J Am Coll Cardiol 2013; 62: Group ERS(n=31) ERS(A)(n=12)ERS(B)(n=19) BS(n=40) IVF(n=13) Pvalue (A)vs.(B) FollowGup(months) 90±57 76±46 104±63 82± VFrecurrencen,(%) 7(58%) 2(11%) 22(55%) 2(15%) VFstormn,(%) 5(42%) 0(0%) 10(25%) 0(0%) ICDimplantaRonn(%) 12(100%) 18(95%) 38(95%) 10(77%) 1.0 National Cerebral and Cardiovascular Center Nippon Medical School
19 Kaplan-Meier analysis of free of VF Kamakura T, Shimizu W et al. J Am Coll Cardiol 2013; 62: ERS(A)Ggroup ERS(B)Ggroup 0,8 IVFGgroup(n=13) ERS(B)Ggroup(n=19) BSGgroup IVFGgroup Free*of*VF 0,6 0,4 ERS(A)Ggroup(n=12) BSGgroup(n=40) 0,2 0 LogGrankP= ERS(A)vs.ERS(B) FollowJup*(Month) National Cerebral and Cardiovascular Center Nippon Medical School
20 Summary Kamakura T, Shimizu W et al. J Am Coll Cardiol 2013; 62: " Infero-lateral ERS patients can be divided into 2 heterogeneous groups: Patients with pure infero-lateral ER Patients with infero-lateral ER + non-type 1 ER pattern in high costal ECG. " Non-type 1 ER pattern in high costal ECG seems to be a key predictor of poor outcome in patients with inferolateral ERS. Patients with non-type 1 ER pattern in high costal ECG may be another variant of Brugada syndrome National Cerebral and Cardiovascular Center Nippon Medical School
21 J wave syndrome Antzelevitch C. Heart Rhythm. 2010; 7: ERS* ERS1(lateralGI,V4GV6):goodprognosis ERS2(inferiorGII,III,aVF) ERS3(global):poorprognosis I KGATP I Na I Ca I to I Na I Ca I KGATP I KGAch Brugada*syndrome Inferolateral*ERS
22 Early repolarization syndrome (ERS) Kamakura T, Shimizu W et al. J Am Coll Cardiol 2013; 62: I KGATP I Na I Ca I to PosiRveresponseto sodiumchannelblocker JGSTaugmentaRoninleadsV 1 GV 3 (includinghighcostal),avlavf NonGtype1BS NegaRveresponseto sodiumchannelblocker JGSTaugmentaRon(G)) Type1BS ERS InferoJlateral*ERS** Pure*inferoJlateral*ERS *NonJtype1*ER*in* high*costal*ecg** Heterogeneous IVF high*vf*recurrence* VF*during*sleep low*vf*recurrence*** VF*during*ac)vity
23 Acknowledgement Shiga Univ. School of Medical Science Minoru Horie, Seiko Ohno Hiroshi Matsuura, Futoshi Toyoda Keio University Keiichi Fukuda, Shinsuke Yuasa Yoshiyasu Aizawa Nagasaki University Naomasa Makita Tokyo Medical and Dental University Tetsushi Furukawa Toshihiro Tanaka Niigata University Hiroshi Watanabe Tokyo Womens Medical University Nobuhisa Hagiwara Nihon University Naokata Sumitomo Kanazawa University Masakazu Yamagishi, Kenshi Hayashi Kyoto University Takeru Makiyama Okayama University Hiroshi Morita, Kazufumi Nakamura Kagoshima Medical Center Masao Yoshinaga Tsukuba University Hitoshi Horigome, Kazutaka Aonuma Nippon Medical School Yasushi Miyauchi, Meiso Hayashi National Cerebral and Cardiovascular Center Tsukasa Kamakura, Shiro Kamakura, Aiba Takeshi Yoshihiro Miyamoto Akihiro Sekine Isao Shiraishi Hisaki Makimoto Hiro Kawata Tsukasa Kamakura Kenichiro Yamagata Kohei Ishibashi Ikutaro Nakajima Koji Miyamoto Hideo Okamura Takashi Noda Kengo F. Kusano Academic Medical Center, Amsterdam Connie Bezzina Arthur AM Wilde Tel-Aviv University, Israel Sami Viskin Lankenau Institute for Medical Research, USA Charlies Antzelevitch Thank you for your attention
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