THE TERM "peri-infarction block" was suggested by First, Bayley, and Bedford1 in 1950 to describe a type of intraventricular conduction defect that develops following myocardial infarction. They described alteration in the direction of the early portion of the QRS complex (initial QRS forces) that produced definite manifestations of myocardial infarction (i.e., Q waves) and slurring and prolong...

In this study, a QRS detection algorithm with low processing load based on time-domain thresholding is proposed. The ECG signal filtered only pass filter to reduce the computational load. After filtering, derivation and squaring are also performed. Thresholding stage, linear decreasing threshold voltage method using addition operation instead of multiplication Simulations MIT-BIT Arrhythmia Dat...

To eanpare the modMod precordiat leads MCI., and AlCL, with the conventioosl prfxordial leads V, and V, and assess the diignastic necuracy of selected leads for continuous bedside electrocardiographic (ECGI monitoring. 121 wide QRS complex tachycardiis were recorded From 92 palienls during cardiac electrophyG&gic rNdy. As awzNined from intracardiac recordings, 86 Nchycardias were venlricular an...

Typically, sustained monomorphic ventricular tachycardia (SMVT) in patients with a previous myocardial infarction (MI) is characterized by a wide QRS complex. However, occasionally patients present with SMVT and a narrow QRS complex (N-SMVT). We studied retrospectively the incidence of N-SMVT (i.e., QRS interval <140 ms) in patients with a previous MI and inducible SMVT who underwent electrophy...