patients with valvular heart disease and suffering atrial fibrillation of more than 12 months duration have a low probability of remaining in sinus rhythm after valve surgery alone. we performed intra-operative radiofrequency ablation or cryoablation as an alternative to surgical maze ііі procedure to create linear lesion lines for conversion of this arrhythmia to sinus rhythm. a total of 30 pa...

Na(v)1.5, the pore forming α-subunit of the voltage-dependent cardiac Na(+) channel, is an integral membrane protein involved in the initiation and conduction of action potentials. Mutations in the gene-encoding Na(v)1.5, SCN5A, have been associated with a variety of arrhythmic disorders, including long QT, Brugada, and sick sinus syndromes as well as progressive cardiac conduction defect and a...

Recognition of cardiac syncope masquerading as epilepsy may be difficult in the Emergency Department. We report a middle-aged man with recent onset convulsions who posed a diagnostic puzzle before it was found that he had paroxysmal ventricular standstill with complete atrioventricular block: he made a complete recovery after temporary pacemaker insertion. The main lessons from this case were (...

patients with valvular heart disease suffer from atrial fibrillation for more than 12 months after valve surgery and have a low probability of remaining in sinus rhythm. we performed an intra-operative procedure similar to surgical maze ііі procedure for conversion of this arrhythmia to sinus rhythm. we did this study to evaluate the efficacy of this procedure to restore the sinus rhythm in pat...

Recognition of cardiac syncope masquerading as epilepsy may be difficult in the Emergency Department. We report a middle-aged man with recent onset convulsions who posed a diagnostic puzzle before it was found that he had paroxysmal ventricular standstill with complete atrioventricular block: he made a complete recovery after temporary pacemaker insertion. The main lessons from this case were (...

We consider accretion discs in close binary systems. We show that heating of a disc at the impact point of the accretion stream contributes significantly to the local energy budget at its outer edge. As a result the thermal balance relation between local accretion rate and surface density (the ‘S–curve’) changes; the critical mass transfer rate above which no dwarf nova outbursts occur can be u...