scholarly journals RR interval variability in the evaluation of ventricular tachycardia and effects of implantable cardioverter defibrillator therapy

2021 ◽  
Author(s):  
Keita Tsukahara ◽  
Yasushi Oginosawa ◽  
Yoshihisa Fujino ◽  
Toshihiro Honda ◽  
Kan Kikuchi ◽  
...  
Keyword(s):  
Ventricular Tachycardia ◽  
Implantable Cardioverter Defibrillator ◽  
Implantable Cardioverter Defibrillator Therapy ◽  
Cardioverter Defibrillator ◽  
Rr Interval

scholarly journals Cardioverter-Defibrillator Implantation to Treat Cardiac Fibroma-Induced Ventricular Tachycardia in a 70-Year-Old Woman

2014 ◽  
Vol 41 (3) ◽  
pp. 329-331 ◽  
Author(s):  
Fayaz Ahmad Hakim ◽  
Anil Pandit ◽  
Farouk Mookadam ◽  
Sylvia Mamby
Keyword(s):  
Ventricular Tachycardia ◽  
Implantable Cardioverter Defibrillator ◽  
Clinical Symptoms ◽  
Surgical Excision ◽  
Orthotopic Heart Transplantation ◽  
Implantable Cardioverter Defibrillator Therapy ◽  
Cardiac Fibroma ◽  
Outflow Obstruction ◽  
Cardioverter Defibrillator

Benign cardiac fibroma is rarely reported in adults. Its clinical symptoms are related to outflow obstruction or dysrhythmias. We present the case of a 70-year-old woman who had a syncopal episode from ventricular tachycardia caused by cardiac fibroma. Because of unfavorable tumor anatomy, the patient was not a candidate for surgical excision, and she declined orthotopic heart transplantation. To prevent sudden cardiac death, we placed an implantable cardioverter-defibrillator, and the patient remained well throughout the 2-year follow-up period. To our knowledge, this is the first report of implantable cardioverter-defibrillator therapy to treat an adult patient's unresectable cardiac fibroma.

scholarly journals Inducible Ventricular Tachycardia Due to Dermatomyositis-Related Cardiomyopathy in the Era of Implantable Cardioverter-Defibrillator Therapy

Circulation ◽  
2012 ◽  
Vol 125 (7) ◽  
pp. 967-969 ◽  
Author(s):  
Polychronis Dilaveris ◽  
Panagiota Pietri ◽  
Dimitris Tsiachris ◽  
Konstantinos Gatzoulis ◽  
Christodoulos Stefanadis
Keyword(s):  
Ventricular Tachycardia ◽  
Implantable Cardioverter Defibrillator ◽  
Implantable Cardioverter Defibrillator Therapy ◽  
Cardioverter Defibrillator

scholarly journals Surgery for Ventricular Tachycardia

2021 ◽  
pp. 36-42
Author(s):  
Gerald M Lawrie
Keyword(s):  
Ventricular Tachycardia ◽  
Catheter Ablation ◽  
Implantable Cardioverter Defibrillator ◽  
Implantable Cardioverter Defibrillator Therapy ◽  
Surgical Ablation ◽  
Cardioverter Defibrillator ◽  
Automatic Implantable Cardioverter Defibrillator ◽  
Improved Methods

The treatment of drug-refractory chronic ventricular tachycardia (VT) has undergone a revolution over the last 50 years. We now have automatic implantable cardioverter defibrillator therapy with pace-terminating capabilities, and catheter ablation of VT has refined mapping and improved methods of lesion generation. Between 1980 and 1993, Houston Methodist Hospital became a leader in the diagnosis and surgical ablation of VT and other arrhythmias. This is a brief account of that period and some of the experiences and lessons that have led to significant advances used today.

scholarly journals RR interval variability in the evaluation of ventricular tachycardia and effects of implantable cardioverter defibrillator therapy

2020 ◽  
Author(s):  
Keita Tsukahara ◽  
Yasushi Oginosawa ◽  
Yoshihisa Fujino ◽  
Toshinobu Honda ◽  
Kan Kikuchi ◽  
...  
Keyword(s):  
Ventricular Tachycardia ◽  
Implantable Cardioverter Defibrillator ◽  
Cycle Length ◽  
Shock Therapy ◽  
Cardiac Resynchronization ◽  
Icd Therapy ◽  
Cardioverter Defibrillator ◽  
Rr Interval ◽  
Successful Termination ◽  
Significant Difference

Introduction: An implantable cardioverter defibrillator (ICD) is the most reliable therapeutic device for preventing sudden cardiac death in patients with sustained ventricular tachycardia (VT). Regarding the effectiveness of the ICD, targeted VT is defined based on the tachyarrhythmia cycle length. However, variation of the RR interval variability of VTs does occur. A few studies reported on VT characteristics and effects of ICD therapy according to RR interval variability. This study aimed to identify the clinical characteristics of VTs and effects of ICD therapy according to RR interval variability. Methods: We analyzed 821 VT episodes in 69 of 185 patients treated with ICDs or cardiac resynchronization therapy defibrillators. VTs were classified as regular or irregular based on RR interval variability. We evaluated successful termination using anti-tachycardia pacing (ATP)/shock therapy, spontaneous termination, and acceleration between regular and irregular VTs. Reproducibility of the RR interval variability in one VT episode and within an individual with recurrent VT episodes was evaluated. Results: Regular VT was significantly more successfully terminated than irregular VT by ATP therapy. There was no significant difference in shock therapy or VT acceleration, irrespective of the variability of the VT cycle length. Spontaneous termination of VT occurred significantly more often in irregular than in regular VT. Reproducibility of RR interval variability in an episode and individual was 89% and 73%, respectively. Conclusion: ATP therapy showed greater effectiveness for regular than for irregular VT. Spontaneous termination was more common in irregular than in regular VT. RR interval variability of VTs is reproducible.

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