Mechanizmy wyzwalające groźne arytmie komorowe - analiza elektrogramów rejestrowanych w pamięci holterowskiej implantowanych kardiowerterów-defibrylatorów serca
Year: 2002
Type: article
Study design: Observational Study
Abstract: Mechanisms inducing malignant ventricular arrhythmias -analysis of the electrograms stored in Holter memory of implantable cardioverter-defibrillators Introduction:The aim of the study was to analyse stored intracardiac electrograms to examine the mechanisms initiating ventricular arrhythmias. Material and methods:We studied data from 135 consecutive patients with implanted ICD (Phylax -Biotronik).During mean follow-up of 24 months 468 episodes of ventricular arrhythmias were stored in ICD of 60 patients (40 M; 20 W; mean age of 56 years, CAD -45, DCM -5, LQTS -4, VA -1, HCM -1, ARVD -1, idiopathic VT/VF -3).335 episodes (71,6%) were defined as monomorphic ventricular tachycardia, 53 (11.3%) as polymorphic ventricular tachycardia and 80 (17.1%) as ventricular fibrillation.Results: The "short-long-short" initiating sequence was noted in 14.5% of episodes, single premature contraction (PC) in 62.4%, multiple PCs in 16% and atrial fibrillation in 7.1%.Shorter cycle length of the baseline rhythm and shorter coupling interval of the premature beat were correlated with the shorter cycle length of the arrhythmia. Conclusions:The most common arrhythmia in ICD patients is ventricular tachycardia usually preceded by single, late-coupled premature depolarisation occurred during normocardia.Atrial fibrillation is an important trigger mechanism of spontaneous ventricular arrhythmias.The cycle length of the baseline rhythm and the coupling interval of the premature beat determine the arrhythmia cycle length.(Folia Cardiol.2002; 9: 349-359) implantable cardiverter-defibrillator, ventricular tachycardia, ventricular fibrillation, onset mechanism 350
Source: Via Medica Journals
Language: Polish
Subfield: Cardiology and Cardiovascular Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W1934968025