Cardiac resynchronization therapy (CRT) has been proposed in heart failure patients with narrow QRS, but the mechanism of a potential beneficial effect is unknown. The present study investigated the hypothesis that left ventricular (LV) pacing increases LV end-diastolic volume (LVEDV) by allowing the LV to start filling before the right ventricle (RV) during narrow QRS in an experimental model....

Epicardial wires allow temporary pacing after cardiac surgery. Pacing is often the best, and sometimes the only method of treating temporary rhythm disturbances in this context. Temporary epicardial pacing has evolved from simple one-chamber systems to dual chamber, biatrial, and even biventricular systems. The first part of this two-part review provides an overview of the management of tempora...

State of the art treatment of atrial fibrillation in an individual patient may follow different, complex avenues depending on symptoms, clinical circumstances, and patient preferences. Management may become particularly challenging when atrial fibrillation is associated with other co-morbidities, especially heart failure. Epidemiological studies have shown that heart failure with New York Heart...

INTRODUCTION Right ventricular apical pacing-related heart failure is reported in some patients after long-term pacing. The exact mechanism is not yet clear but may be related to left ventricular dyssynchrony induced by right ventricular apical pacing. Right ventricular septal pacing is thought to deteriorate left ventricular function less frequently because of a more normal left ventricular ac...

OBJECTIVE Right ventricular disarticulation (RVD) is an accepted procedure in the treatment of ventricular tachycardia of right ventricular origin. We set out to review the long-term outcomes with RVD at our institution for patients with arrhythmogenic right ventricular dysplasia (ARVD) or refractory tachycardia. A renewed interest in this operation has come about in patients unable to tolerate...

BACKGROUND/OBJECTIVES Pacemaker syndrome was mainly described as the sequel of atrioventricular (AV) dyssynchrony. The role of interventricular (VV) dyssynchrony has not been studied yet. The aims of this study were to noninvasively assess the hemodynamic effects of different ventricular pacing sites with and without AV and VV dyssynchrony and to observe the patients for clinical symptoms of th...

The use of cardiac resynchronization therapy (CRT) has become widespread in patients with heart failure who meet the criteria for implantation. Coronary sinus lead positioning is important to provide the intended biventricular stimulation. Diaphragm pacing is a lead-related complication which occurs secondary to phrenic nerve stimulation. We present the case of a 58-year-old male patient who ha...

Permanent pacemaker is the mainstay treatment indicated for bradycardia caused by sinus node dysfunction. However, heart failure may appear in patients with chronic right ventricle pacing, this known as Pacing-Induced Cardiomyopathy (PICM). There no internationally accepted definition diagnosis of PICM. Studies show prevalence PICM 9% first year and increases proportion to duration PPM implanta...