Title :
Normalization of RR sequences: a new approach for quantitative assessment of heart rate turbulence by abnormal post stimulation response
Author :
Berkowitsch, A. ; Guettler, N. ; Schulte, B. ; Neumann, T. ; Vukajlovich, D. ; Erdogan, A. ; Pitschner, HF
Author_Institution :
Kerckhoff-Clinic, Bad Nauheim, Germany
Abstract :
In our previous studies (2000, 2001), we observed different patterns of abnormal post-ectopic sinus response. In some cases, the conventional heart rate turbulence (HRT) parameter, "turbulence slope" (TS), could not be correctly used. The normalization of RR sequences allows to estimate a rate-independent parameter, TSnrm. The aim of this study was to investigate the effect of normalization of tachograms and to define new descriptors of HRT which may predict the recurrence of ventricular tachycardia (VT) and ventricular fibrillation (VF) in implantable cardioverter-defibrillator (ICD) patients
Keywords :
defibrillators; electrocardiography; haemodynamics; medical signal processing; neuromuscular stimulation; sequences; turbulence; ECG; R-R sequence normalization; abnormal post-ectopic sinus response; abnormal post-stimulation response; heart rate turbulence assessment; implantable cardioverter-defibrillator patients; rate-independent parameter estimation; tachograms; turbulence slope; ventricular fibrillation recurrence prediction; ventricular tachycardia recurrence prediction; Acceleration; Cardiology; Coronary arteriosclerosis; Fluctuations; Hafnium; Heart rate; Heart rate variability; Linear regression; Rail to rail inputs; Rhythm;
Conference_Titel :
Computers in Cardiology 2001
Conference_Location :
Rotterdam
Print_ISBN :
0-7803-7266-2
DOI :
10.1109/CIC.2001.977657
