| abstract |
An implantable stimulation device and associated method allow for the selection of an inter-ventricular or inter-atrial delay which results in optimal hemodynamic benefit for the patient. The stimulation device monitors and measures the width of the QRS complex, or a P wave in response to different interpulse delays during biventricular or biatrial stimulation. The stimulation device then selects the optimal interpulse delay that results in the minimum QRS or P width. The present method allows for the adaptive adjustment of the interpulse interval over time, caused for example, by changes in disease state, medical therapy, physical activity or other factors may cause changes in the electromechanical response of the heart. |