scholarly journals Ventricular fibrillation ablation in cardiomyopathies and arrhythmic storm

2021 ◽  
Vol 23 (Supplement_E) ◽  
pp. E112-E117
Author(s):  
Carlo Pappone ◽  
Gabriele Negro ◽  
Giuseppe Ciconte
Keyword(s):  
Ventricular Tachycardia ◽  
Cardiac Death ◽  
Ventricular Arrhythmias ◽  
Healthy Individuals ◽  
Therapeutic Tool ◽  
Cardioverter Defibrillator ◽  
Structural Abnormalities ◽  
Life Threatening ◽  
Underlying Mechanisms ◽  
Screening And Prevention

Abstract Sudden cardiac death (SCD) is a relevant contributor to cardiovascular mortality, often occurring as a dramatic event. It can be the consequence of a ventricular tachycardia/fibrillation (VT/VF), a common and life-threatening arrhythmia. The underlying mechanisms of this catastrophic arrhythmia are poorly known. In fact, it can occur in the presence of a structural heart condition which itself generates the suitable substrate for this arrhythmia. Nevertheless, a VF may cause SCD also in young and otherwise healthy individuals, without overt structural abnormalities, generating difficulties in the screening and prevention of these patients. The implantable cardioverter-defibrillator represents the only therapy to contrast SCD by treating a VT/VF; however, it cannot prevent the occurrence of such arrhythmias. Catheter ablation is emerging as an essential therapeutic tool in the management of patients experiencing ventricular arrhythmias.

1175Structural progression increases the risk of ventricular arrhythmias in patients with arrhythmogenic cardiomyopathy

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
M Chivulescu ◽  
Ø.H Lie ◽  
H Skulstad ◽  
B A Popescu ◽  
R O Jurcut ◽  
...  
Keyword(s):  
Ventricular Tachycardia ◽  
Ventricular Arrhythmias ◽  
Arrhythmogenic Cardiomyopathy ◽  
Cardioverter Defibrillator ◽  
Structural Progression ◽  
Life Threatening ◽  
Arrhythmic Event ◽  
History Of ◽  
Structural Disease

Abstract Background Arrhythmogenic cardiomyopathy (AC) is an inheritable cardiomyopathy with incomplete penetrance, variable phenotype severity and poorly described disease progression. It is characterized by high risk of life-threatening ventricular arrhythmias and sudden cardiac death in young individuals. Risk stratification and selection of patients presenting without history of life-threatening arrhythmic events for cardioverter-defibrillator implantation in primary prevention remains challenging. Purpose We aimed to assess the impact of disease progression on arrhythmic outcomes in AC patients. Methods We included consecutive AC probands and mutation-positive family members with at least one complete follow-up evaluation. Echocardiographic and electrical parameters were defined according to the 2010 Revised Task Force criteria at inclusion and at last follow-up. Structural progression was defined as development of new echocardiographic diagnostic criteria. Electrical progression was defined as the development of new diagnostic depolarization, repolarization and/or premature ventricular complex count criteria during follow-up. Non-sustained ventricular tachycardia or ventricular tachycardia occurring during follow-up defined incident ventricular arrhythmic events. Results We included a total of 144 patients (48% female, 47% probands, 40±16 years old). At inclusion, 54 patients (37%) had a history of arrhythmic events, 30 patients (21%) had overt structural disease and 114 (79%) had no or minor structural disease. During 7.0 (IQR: 4.5 to 9.4) years of follow-up, 49 patients (43%) with no or minor structural disease at inclusion developed new structural criteria being defined as progressors. Among 80 participants with no or minor structural disease and no arrhythmic history at inclusion, a first arrhythmic event occurred in 14 (17%). The incidence of arrhythmic events was higher in progressors (11/27, 41%) than in non-progressors (3/53, 6%) (p<0.001) (Figure). Structural progression was associated with higher risk of first arrhythmic events during follow-up when adjusted for sex, age at inclusion and follow-up duration, independent of electrical progression (7.6, 95% CI [1.5, 37.2], P=0.01). Incident arrhythmic events distribution Conclusion Almost half of patients without overt structural cardiac disease at genetic diagnosis develop new structural criteria during 7 years follow-up and 17% experienced their first ventricular arrhythmic event. Structural progression was independently associated with ventricular arrhythmic events during follow-up. These findings highlight the increased risk of arrhythmias when structural abnormalities are detected. Their finding may initiate the evaluation for primary prevention cardioverter-defibrillator implantation.

scholarly journals LEFT VENTRICULAR LEAD IMPLANTATION FOR DETECTION OF VENTRICULAR ARRHYTHMIAS IN PATIENT WITH IMPLANTABLE CARDIOVERTER DEFIBRILLATOR AND LOW R WAVE IN RIGHT VENTRICLE

2021 ◽  
pp. 17
Author(s):  
Keyword(s):  
Sudden Cardiac Death ◽  
Right Ventricle ◽  
Implantable Cardioverter Defibrillator ◽  
Cardiac Death ◽  
Ventricular Arrhythmias ◽  
Systolic Function ◽  
Left Ventricular ◽  
Icd Implantation ◽  
Cardioverter Defibrillator ◽  
Ventricular Lead

Dilated cardiomyopathy (DCM) is a disease characterised as left ventricular (LV) or biventricular dilatation with impaired systolic function. Regardless of underlying cause patients with DCM have a propensity to ventricular arrhythmias and sudden cardiac death. Implantable Cardioverter Defibrillator (ICD) implantation for these patients results in significant reduction of sudden cardiac death [1-3]. ICD devices may be limited by right ventricle (RV) sensing dysfunction with low RV sensing amplitude. We present a clinical case of patient with DCM, implanted ICD and low R wave sensing on RV lead.

Secondary prevention of sudden cardiac death in ischaemic cardiomyopathy

ESC CardioMed ◽  
2018 ◽  
pp. 2337-2341
Author(s):  
Jens Cosedis Nielsen ◽  
Jens Kristensen
Keyword(s):  
Heart Failure ◽  
Cardiac Arrest ◽  
Heart Disease ◽  
High Risk ◽  
Sudden Cardiac Death ◽  
Secondary Prevention ◽  
Cardiac Death ◽  
Cardioverter Defibrillator ◽  
Ischaemic Cardiomyopathy ◽  
Life Threatening

The most common reason for sudden cardiac death is ischaemic heart disease. Patients who survive cardiac arrest are at particularly high risk of recurrent ventricular arrhythmia and sudden cardiac death, and are candidates for secondary prevention defined as ‘therapies to reduce the risk of sudden cardiac death in patients who have already experienced an aborted cardiac arrest or life-threatening arrhythmias’. The mainstay therapy for secondary prevention of sudden cardiac death is implantation of an implantable cardioverter defibrillator. Furthermore, revascularization and optimal medical therapy for heart failure and concurrent cardiovascular diseases should be ensured.

Ventricular tachycardia and sudden cardiac death might complicate the long-term outcome by patients after tetralogy of Fallot repair

2008 ◽  
Vol 149 (23) ◽  
pp. 1067-1069
Author(s):  
Attila Mihálcz ◽  
Csaba Földesi ◽  
Tamás Szili-Török
Keyword(s):  
Ventricular Tachycardia ◽  
Sudden Cardiac Death ◽  
Tetralogy Of Fallot ◽  
Cardiac Death ◽  
Term Outcome ◽  
Long Term Outcome ◽  
Cardioverter Defibrillator ◽  
Tetralogy Of Fallot Repair

A Fallot-tetralógia miatti műtétet követően a hosszú távú túlélést befolyásoló tényezők közé tartozik a kamrai tachycardia és a hirtelen szívhalál. E betegek gondozásában érdemi segítséget jelent az implantálható cardioverter defibrillátor rendszer. A végleges pacemaker és/vagy implantálható cardioverter defibrillátor implantációját követően ritka, ám potenciálisan letális kimenetelű fertőzéses szövődmény az endocarditis. Ez esetben a leghatékonyabb kezelési mód a kombinált terápia, amely a beültetett készülék + elektródák teljes körű eltávolításából és agresszív antibiotikus kezelésből áll. Célkitűzés: Ilyen esetekben a tervezett reimplantáció különös óvatosságot igényel a nagyobb recidívaarány miatt, amelynek rizikója fokozottabb pacemakerdependencia esetén. Célunk olyan módszer alkalmazása volt, amelynek segítségével a recidíva kockázata minimálisra csökkenthető. Módszer: Esetünkben a korábban Fallot-tetralógia miatt többször műtött, pacemaker-, majd implantálható cardioverter defibrillátor beültetéseken átesett betegnél recidív endocarditis miatt készülék- és elektródaeltávolítást végeztünk, standard antibiotikus terápia alkalmazásával. A reimplantációt minithoracotomián keresztül végeztük. Az így elhelyezett sokkelektróda elégtelen működése miatt egy másik sokkelektródát szubkután vezettünk a hátsó mellkasfali régióba; rendszerünk az indukált kamrafibrillációt sikerrel szüntette meg. Megbeszélés: Esetismertetésünk demonstrálja a szubkután defibrillátorrendszer alkalmazhatóságát és előnyeit speciális körülmények fennállásakor. Felhívjuk a figyelmet arra a tényre, hogy ezt a technikát gyakrabban is lehetne alkalmazni olyan esetekben, amelyekben a transzvénás implantáció nem optimális.

scholarly journals Bidirectional ventricular tachycardia: what is it?

2020 ◽  
Vol 26 (4) ◽  
pp. 59-63
Author(s):  
Yu. V. Shubik
Keyword(s):  
Ventricular Tachycardia ◽  
Ventricular Arrhythmias ◽  
Torsade De Pointes ◽  
Life Threatening

The differences between polymorphic spindle-shaped (such as “pirouette”, “torsade de pointes”) and polymorphic bidirectional ventricular tachycardia are discussed, examples of these life-threatening ventricular arrhythmias are given.

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