IN COMMON vectoreardiographic practice, vector loops are recorded in three plalne projections that are perpendicular to one another (frontal, sagittal, and horizontal planes). The arbitrary choice of these planes has been derived from body axes rather than from the spatial orientation of the vectorcardiogram or the heart itself. Several investigators1'-" have proposed, therefore, to replace the...

This review discusses the development of any QRS detection algorithm based on three assessment criteria: robustness to noise, parameter choice, and numerical efficiency. This is because of there is a need nowadays for fast and robust QRS detection algorithms to be deployed on mobile phones, and run over large ECG databases and wireless medical body area network. Till now, there is no satisfying...

Correct diagnosis in wide QRS complex tachycardia remains a challenge. Differential diagnosis between ventricular and supraventricular tachycardia has important therapeutic and prognostic implications, and although data from clinical history and physical examination may suggest a particular origin, it is the 12-lead surface electrocardiogram that usually enables this differentiation. Since 1978...

intrOdUctiOn Patients presenting to the emergency department (ED) with electrocardiograms (ECGs) indicating wide complex tachycardias (WCTs) are difficult to manage. Furthermore, these ECGs are often challenging to interpret. Patients typically have ongoing chest discomfort, with or without symptoms of dyspnea, lightheadedness, nausea, and diaphoresis. Accurate interpretation of ECGs demonstrat...

AIMS In patients without pre-excitation, the differential diagnosis of paroxysmal atrioventricular (AV) reciprocating tachycardias consists mainly of atrioventricular nodal re-entrant tachycardias (AVNRTs) and AV reciprocating tachycardias (AVRTs) through a concealed bypass. Our purpose was to validate the diagnostic accuracy of a predictive logistic model using classical electrocardiographic (...

In recently years, Artificial Neural Networks have been studied extensively and applied in medical field, and have been demonstrated to have much better pattern recognition ability. In this chapter we present a VLSI chip to be implemented using 0.35 μm CMOS technology which is the implantable cardioverter defibrillator (ICDs). Implantable cardioverter defibrillator is a device which monitors th...

BACKGROUND The sequence of Q, R, and S peaks (QRS) complex detection is a crucial procedure in electrocardiogram (ECG) processing and analysis. We propose a novel approach for QRS complex detection based on the deterministic finite automata with the addition of some constraints. This paper confirms that regular grammar is useful for extracting QRS complexes and interpreting normalized ECG signa...