INTRODUCTION The study aimed to evaluate function of the left atrium (LA) and of the left atrial appendage (LAA) after myocardial infarction (MI) complicated by intracardiac conduction disturbances. MATERIAL AND METHODS The study comprised 59 patients with persistent post-myocardial distal blocks, who were allocated to one of the three following subgroups: study group I - 20 patients with lef...

BACKGROUND To diagnose left main trunk (LMT) infarction by 12-lead standard electrocardiogram (ECG) is an important emergency technique, but the features in LMT infarctions have not been clarified. METHODS AND RESULTS The study enrolled 140 subjects who were divided into 4 groups according to the location of the culprit artery: 35 with LMT, 35 with left anterior descending artery (LAD), 35 wi...

It has been demonstrated that catheter ablation may be a reliable technique for curing ventricular arrhythmias originating from the great cardiac vein (GCV), and there are some challenges and risks with this therapeutic method. Although some reports described successful catheter ablation of ventricular tachycardias originating from the GCV, premature ventricular contractions (PVCs) with left bu...

Alternating bundle branch block (ABBB) is a less commonly encountered phenomenon with the advent of re-perfusion therapy for acute myocardial infarction. ECGs simulating the appearance of an ABBB need to be carefully analysed. We present an ECG showing a baseline Left Bundle Branch Block(LBBB) progressing to a high grade AV block with escape complexes having a Right Bundle Branch Block (RBBB) m...

Various electrocardiographic and vectorcardiographic (ECG-VCG) patterns of ventricular conduction disturbances are inducible by premature right atrial stimulation (PRAS). These patterns are a consequence of different degrees of refractoriness in the specialized ventricular conduction system. We observed that the intermediate phase of left bundle branch block (LBBB) induced by PRAS in 20 subject...

In order to try to determine the mechanism of sudded death in patients after surgical repair of tetralogy of Fallot, electrocardiographic, intracardiac electrophysiologic, and clinical data of 51 children who had postoperative intracardiac electrophysiologic studies were reviewed. Ninety-four percent had developed right bundle branch block (RBBB) and 16 percent had additional left anterior hemi...

A 26-year-old woman born with Tetralogy of Fallot initially underwent a left Blalock-Taussig shunt followed by a complete repair with a transannular patch at 2 years of age. She complained of non-sustained short episodes of palpitations. Her Holter monitor showed episodes of six beat run of non-sustained ventricular tachycardia. She was scheduled to undergo surgical pulmonary valve replacement....

Abstract We present the case report of a 67 year old man with no previous cardiovascular history, who was admitted to our emergency department (ED) for two days onset right arm pain which not responsive painkillers. On admission, he asymptomatic typical angina. His BP 190/100 mmHg, HR 80 bpm, SpO2 99% and apyretic. The clinical examination unremarkable. ECG showed sinus rhythm, complete right-b...

Vectorcardiograms of paced and unpaced beats were recorded from 18 patients with implanted pacemakers to investigate the characteristics of post-pacing T inversions. The intraventricular conduction during sinus rhythm of unpaced beats was normal in 13 of 18 patients and abnormal in the other 5 (RBBB in 3, LBBB in 2). The directions of the maximum QRS vector in paced beats (max QRSp.V) and maxim...