Clinical impact of increasing left ventricular pacing output in cardiac resynchronization therapy – the new optimization strategy
نویسندگان
چکیده
We report a patient who did not improve after standard optimization of atrioventricular and intraventricular pacing timing, but showed response to cardiac resynchronization therapy (CRT) after increasing left ventricular (LV) pacing output. Increasing LV pacing output is one of the useful optimization methods for CRT nonresponder.
منابع مشابه
Seeing is believing: acute haemodynamic response to predict long-term outcome in cardiac resynchronization therapy.
Many heart failure specialists still believe that the pathophysiology of cardiac resynchronization therapy (CRT) is incompletely understood; however, it must be emphasized that the main effects of biventricular pacing have already been described more than a decade ago. In 1994, Cazeau et al. reported how biventricular pacing improves clinical signs and symptoms of heart failure, acutely increas...
متن کاملBifocal pacing in the right ventricle: an alternative to resynchronization when left ventricular access is not possible in end-stage heart failure patients.
BACKGROUND It has been reported that bifocal pacing (BiF) in the right ventricle might be an alternative to unsuccessful left ventricular lead implantation. This case report presents an assessment of the clinical and hemodynamic parameters during a three month follow-up in patients implanted with right ventricular BiF. METHODS Eight patients who underwent unsuccessful left ventricular lead im...
متن کاملStimulus Intensity in Left Ventricular Leads and Response to Cardiac Resynchronization Therapy
BACKGROUND Increased left ventricular (LV) stimulus intensity has been shown to improve conduction velocity and cardiac output. However, high-output pacing would shorten device battery life. Our prospective trial analyzed the clinical effects of high- versus low-output LV pacing. METHODS AND RESULTS Thirty-nine patients undergoing initial cardiac resynchronization therapy device implantation ...
متن کاملAn Overview of Current Cardiac Resynchronization Therapy.
UNLABELLED Cardiac resynchronization therapy (CRT) is currently an established device therapy for heart failure (HF) patients. Existing knowledge of implantation techniques, advances in device-based technologies and clinical trial experience have all significantly impacted this evolving therapy in recent years. This review article will address the updated CRT guidelines, and potentially new ind...
متن کاملWhether noninvasive optimization of AV and VV delays improves the response to cardiac resynchronization therapy.
BACKGROUND Device optimization is not routinely performed in patients who underwent cardiac resynchronization therapy (CRT) device implantation. Noninvasive optimization of CRT devices by measurement of cardiac output (CO) can be used as a simple method to assess ventricular systolic performance. The aim of this study was to assess whether optimization of atrioventricular (AV) and interventricu...
متن کامل