ΤΙ ΠΡΕΠΕΙ ΝΑ ΓΝΩΡΙΖΕΙ ΟΓΕΝΙΚΟΣ ΚΑΡΔΙΟΛΟΓΟΣ ΓΙΑ ΤΙΣ ΔΙΑΥΛΟΠΑΘΕΙΕΣ
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1 ΤΙ ΠΡΕΠΕΙ ΝΑ ΓΝΩΡΙΖΕΙ ΟΓΕΝΙΚΟΣ ΚΑΡΔΙΟΛΟΓΟΣ ΓΙΑ ΤΙΣ ΔΙΑΥΛΟΠΑΘΕΙΕΣ ΣΤΕΛΙΟΣ ΠΑΡΑΣΚΕΥΑÏΔΗΣ ΔΙΕΥΘΥΝΤΗΣ ΕΣΥ Α Καρδιολογική Κλινική ΑΠΘ, Νοσοκομείο ΑΧΕΠΑ, Θεσσαλονίκη
2 NO CONFLICT OF INTEREST
3 Sudden Cardiac Death (SCD) Aborted Cardiac Arrest (ACA) USA: 350, ,000 /year channelopathies: 10% 15% of cases of unexplained SCD in young adults and children
4 ΔΙΑΥΛΟΠΑΘΕΙΕΣ Long QT syndrome Short QT syndrome Brugada syndrome Catecholaminergic polymorphic ventricular tachycardia (CPVT) Εarly repolarisation syndrome
5 Long QT Syndrome Genetic disorder : 1/2.000 ECG evidence: QTc interval prolonged > 450 ms in males > 470 ms in females Hallmark arrhythmia: Torsade de pointes VT, or poymorphic VT Primary presenting symptom: Syncope SCD in children or young adults SCD: 13 % first manifestation of LQTS
6 LQTS Μοss AJ, et al Circulation 1995
7 T wave alternans notced T waves
8 LQTS (15 genes, > 500 mutations) LQT1, LQT2, LQT3 : 95% of genotype-positive LQTS 75% of all LQTS
9 QT measurement leads II, V5 or V6: longest value
10 Distribution of QTc intervals in carriers (LQTS) and noncarriers (control)
11 Holter ECG Recording in LQTS Patient with Syncope (representative strips of ECG recording, part 2 of 2)
12 Risk-Stratification Scheme for ACA or SCD in LQTS Patients secondary prevention post-cpr, spontaneoustdp primary prevention QTc > 500 msec, syncope QTc < 500 msec, no syncope Goldenberg I, Moss A, JACC 2008;51:
13 Probability of a Cardiac Event Zareba W, et al. NEJM 1998;339:
14 probability of ACA or SCD among the 4 genotyped subgroups Goldenberg I et al. Circulation 2008;117:
15 Probability of LQTS-Related Events by Gender female male first cardiac event (syncope,aca, SCD) female ACA, SCD male
16 probability of ACA or SCD by QTc category Goldenberg I et al. Circulation 2008;117:
17 probability of ACA or death in genotyped patients Goldenberg I et al. Circulation 2008;117:
18 LQTS diagnostic (SCHWARTZ) criteria sensitivity : 19 % specificity : 99 % SCORE: 1 point: low probability of LQTS points: intermediate probability of LQTS. 3.5 points: high probability Schwartz P, Ackerman M EHJ 2013
19 Priori S et al. Europace 2013; 15:
20 Expert Consensus Recommendations on LQTS Diagnosis
21 Expert Consensus Recommendations on LQTS Therapeutic Interventions Class I
22 Class I
23 Class IIa mexiletine, flecainide or ranolazine
24 Consensus recommendations for ICDs in long QT syndrome
25 Lifestyle Modifications Recommendations for LQTS patients
26 LQTS (LQT1-3) genetic testing recommendations Class I when a strong clinical index of suspicion for LQTS. Schwartz score > 3.5 for any asymptomatic patient with QTc > 480 ms (prepuberty) or > 500 ms (adults) on serial 12-lead ECGs Ackerman M et al. Europace 2011;13:
27 LQTS genetic testing recommendations Class I Mutation-specific genetic testing is recommended for family members and other appropriate relatives subsequently following the identification of the LQTScausative mutation in an index case Class IIb for any asymptomatic patient with otherwise idiopathic QTc values > 460 ms (prepuberty) or > 480 ms (adults) on serial 12-lead Genetic tests : diagnostics in 75-80%
28 Short QT Syndrome (SQTS) QTc : < 330 msec or QTc : 360 ms and one or more of the following: a pathogenic mutation family history of SQTS family history of sudden death 40 yr survival of a VT/ VF episode in the absence of heart disease. PQ segment depression : frequent Male: 75% SCD: 33 % A FIB: 18 % Gollob M, et al. JACC 2011;57(7):
29 Short QT Syndrome-Diagnostic score probability high: 4 intermediate: 3 low : 2 Spears D, Gollob M. The Application of Clinical Genetics 2015:8;
30 Short QT syndrome- genetic subtype genetic testing in SQTS : positive 18-40%
31 SQTS MANAGENENT Class I Priori S et al.europace 2013; 15:
32 (SQTS1) Class IIb
33 Brugada syndrome (BRS)
34 Brugada syndrome (BRS) ( SCN5A, K, Ca ) genetic testing in BRS : positive %
35 Drugs used to unmask BRS
36 RISK STRATIFICATION PRELUDE Registry Short- coupled PVCs QRS fragmentation spontaneous type I ECG, syncope, ventricular refractory period (VRP) < 200 ms, and QRS fragmentation seem useful to identify candidates for prophylactic ICD implantation. VT/ VF inducibility :ΝS Priori S et al. JACC 2012; 59:37-45
37 TREATMENT- Class I
38 Class IIa
39 Class IIb - EP study: IIb indication
40 ICDs in Brugada syndrome
41 Man, 40 yrs, syncope during sleep ECG on admission (type 2 BRS)
42 Procainamide Test
43 18 Months later Electrical storm (3 shocks-icd) during fever
44 VF A V A V
45 ECG post electrical storm (type 1 BRS)
46 ECG on admission (type 1 BRS)
47 Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT) Prevalence: 1: mortality (untreated) : 50% by the age of 30 years mutations in the gene encoding cardiac ryanodine receptor (RyR2) or calsequestrin (CASQ2)
48 CPVT-DIAGNOSIS < >
49 RISK STRATIFICATION HIGH RISK occurrence of cardiac arrest (not syncope) before diagnosis diagnosis in childhood after diagnosis, the lack of beta-blocker therapy and the use of beta-blockers other than nadolol persistence of complex ectopy in exercise tests
50 CPVT-genetic subtype genetic testing in CPVT : positive 60% genetic testing is recommended: in pts with exercise or emotional stress induced bidirectional VT or polymorphic VT after identification of a pathogenic mutation: to first-degree relatives
51 Management Class I CPVT Nadolol, propranolol
52 Class IIa
53 Class IIb Class III
54 Early repolarization prevalence : 1-13% (6-24%) in general population male : 75% 40% of healthy athletes (series including 1000 athletes) idiopathic VF (IVF) : 15-70%
55 Early Repolarization Syndrome (ERS)
56 Early repolarization benign malignant
57 n= 45 with VF Rapidly ascending ST segment (benign) Heart Rhythm 2012;9: Horizontal/descending ST segment (malignant) J wave J wave
58 Management of ERS Class I Class IIa
59 Class IIb Class III
60 MALE, 35 yrs - SYNCOPE QTc= 416msec
61 ΙΙ ECG
62 ECG-Early repolarization ΙΙ interpolated PVC, coupling interval: < 200 ms
63 HOLTER 16 sec echo, stress test, coronary angio : normal ICD IMPLANTATION
64 CONCLUSION απαραίτητος ισχυρός δείκτης κλινικής υποψίας Inherited Arrhythmia Clinics Class I
65 EYXAΡΙΣΤΩ ΓΙΑ ΤΗΝ ΠΡΟΣΟΧΗ ΣΑΣ
66
67
68 substrate ablation Nademanee K et al. Circulation 2011;123:
69 NEJM 2008 Propability of no VF recurrence n= 206 VF ER: 31% in VF vs 5% control
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