Although early surgical repair for tetralogy of Fallot (rTOF) has significantly improved clinical outcomes and long-term survival, progressive right ventricle (RV) dysfunction driving morbidity and mortality is often observed in adults with rTOF. Management of RV heart failure is occasionally refractory to even appropriate medical therapies. RV mechanical dyssynchrony that is commonly observed ...

An 18 year old man with an incessant monomorphic VT was referred to the electrophysiology service for arrhythmia associated with decreased left ventricular ejection fraction (LVEF). The patient complained of occasional palpitations and was in functional class I. The past history was not significant and physical examination was unremarkable. The electrocardiogram showed wide QRS tachycardia sugg...

Lyme disease may present with a variety of cardiac manifestations ranging from first degree to third degree heart block. Cardiac involvement with Lyme disease may be asymptomatic, or symptomatic. Atrioventrical conduction abnormalities are the most common manifestation of Lyme carditis. Less common, are alternating right bundle branch block (RBBB) and left bundle branch block (LBBB). We present...

Echocardiography was used to evaluate mitral and tricuspid valve closure in patients 1 day to 20 years of age. When possible, simultaneous phonocardiograms were obtained. The difference in time between the Q wave of the electrocardiogram and mitral closure and between Q and tricuspid closure was designated the delta value (A). Four groups of patients were assessed: 1) normals (40), secundum atr...

Cardiac arrhythmias are common heart diseases. Electrocardiography (ECG) is an important measure for diagnosing arrhythmias. Researchers use the ECG signals in order to train artificial neural networks (ANN). In previous studies the ECG signals of males and females were analysed together. We know that there are some differences between male and female ECG signals. This paper suggests that class...

this study was conducted to assess the incidence of abnormalities of ventricular depolarization (late potentials) in children with sinus rhythm after open heart surgery and their relation to spontaneous ventricular tachycardia. open heart surgery, particularly operations involving ventriculotomy, may predispose patients to the development of ventricular tachycardia (vt) or ventricular fibrillat...

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Various studies have questioned the magnitude benefit cardiac resynchronization therapy (CRT) in patients without left bundle branch block (LBBB). This worse response could be due to suboptimal location electrodes. Purpose We hypothesize that non-LBBB patients, an implant guided by ventricular electroanatomic mapping ...

Computerized electrocardiography (ECG) has been widely used and allows linkage to electronic medical records. The present study describes the development clinical applications of an cohort derived from a digital ECG database obtained by Telehealth Network Minas Gerais, Brazil, for period 2010–2017, linked mortality data national information system, Clinical Outcomes in Digital Electrocardiograp...

Abstract Background Anderson-Fabry disease (AFD) is an X-linked lysosomal storage disorder that have gained attention due to the availability of therapeutic options. Disease specific therapy (DST), either by enzyme replacement or oral pharmacological chaperone, mainstay for AFD treatment. Although its widespread use, few data are available on electrocardiographic variations associated with DST....