Publications by authors named "Sylwia Cebula"
Background: Previous studies showed that the presence of fragmented QRS (f-QRS) in patients with acute coronary syndrome (ACS), who underwent complete revascularisation, is associated with worse prognosis and the possibility of arrhythmia occurrence.
Aim: To assess the prognostic value of f-QRS in patients with ACS and complete revascularisation, in the context of cardiac ar-rhythmias.
Methods: We analysed 124 consecutive patients (66.
Background And Aim: The aim of this study was to determine whether gender is related to differences in heart rate turbulence (HRT) parameters and the authors' own predefined HRT categories comprising turbulence timing (TT) in patients at the early stage of acute myocardial infarction (AMI) treated invasively.
Methods: We analysed 489 consecutive patients (147 females and 342 males, aged 63.9 ± 11.
Introduction: The role of heart rate turbulence (HRT) related to baroreflex sensitivity in predicting mortality after myocardial infarction (MI) has been confirmed by several investigators. However, the significance of HRT in predicting major adverse cardiovascular events (MACE) following acute MI is unknown.
Purpose: To analyze the prognostic value of HRT and other independent risk factors associated with autonomic regulation of MACE.
Background: Prediction of recurrent malignant ventricular tachyarrhythmias after insertion of a implantable cardioverter-defibrillator (ICD) is challenging. Microvolt T-wave alternans (MTWA) seems to be a promising marker of such events in ICD recipients.
Aim: To assess prognostic significance of MTWA and other noninvasive parameters in the prediction of major arrhythmic events after ICD implantation.
Background: Previous studies have shown conflicting results about the value of heart rate turbulence (HRT) for risk stratification of patients (pts) with chronic heart failure (CHF). We prospectively evaluated the relation between HRT and progression toward end-stage heart failure or all-cause mortality in patients with CHF.
Methods: HRT was assessed from 24-hour Holter recordings in 110 pts with CHF (54 in NYHA class II, 56 in class III-IV; left ventricular ejection fraction (LVEF) 30%+/- 10%) on optimal pharmacotherapy and quantified as turbulence onset (TO,%), turbulence slope (TS, ms/RR interval), and turbulence timing (beginning of RR sequence for calculation of TS, TT).
Effects of cardiac resynchronization therapy on heart rate turbulence.
Pacing Clin Electrophysiol
March 2009
Background: Cardiac resynchronization therapy (CRT) improves the clinical status of patients with heart failure (HF), though its effects on heart rate turbulence (HRT) are unknown.
Methods: We measured HRT indices in 58 recipients of CRT systems (mean age = 56 +/- 9 years, 41 men) in New York Heart Association HF functional class III-IV, and with a left ventricular (LV) ejection fraction < or =35%. At 6 months of follow-up, 42 patients were responders and 13 nonresponders to CRT, and three patients died suddenly.
Aims: To assess the impact of baseline apnoea-hypopnoea index (AHI) on mid-term outcome and its change after 6 months of cardiac resynchronization therapy (CRT) on remote outcome.
Methods And Results: In 71 patients with CRT devices, Holter-derived AHI was assessed before and 6 months after the procedure. Baseline AHI >20 was considered abnormal.