Validation of Nonstationary Model of Atrioventricular Node Conduction in Atrial Fibrillation

Content Provider	Semantic Scholar
Author	Cammarota, Camillo Rogora, Enrico
Copyright Year	2005
Abstract	In normal human heart the main pacemaker is the sinus node, located in the right atrium; the electrical activation propagates from the sinus node through the atria and then to the ventricles in such a way that each atrial contraction corresponds to a ventricular one. The only conducting pathway between the atria and the ventricles is the atrioventricular node. Atrial fibrillation is an arrhythmia characterized by rapid irregular contraction of the atrial myocardium; electrical stimulations are filtered by the atrioventricular node, which propagates some of them to the ventricles, while others are blocked. The ventricular contractions are represented by the R peaks of the ECG. The time interval between two consecutive R peaks is called RR interval; the RR intervals sequence extracted from the 24 hours Holter recording defines a time series of about 100,000 elements. In long term RR series of fibrillating subjects many qualitatively different kind of regimes may be observed in the same subject. For example, in Figure 1 two different regimes are evident in the second recording. The first regime (roughly the first 15000 beats) is similar to an RR sequence of a normal subject, while the second is typical of chronic fibrillation, as is the regime in the first
Starting Page	179
Ending Page	188
Page Count	10
File Format	PDF HTM / HTML
DOI	10.1142/9789812701817_0017
Alternate Webpage(s)	http://www1.mat.uniroma1.it/people/rogora/pdf/cammarotarogoraCD.pdf
Alternate Webpage(s)	https://doi.org/10.1142/9789812701817_0017
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article