Patent ID: 8099165

Claim:
An external medical device to communicate with an implantable device, the external device comprising: a user interface configured to receive a prompt to generate one or more therapy settings for the implantable device; a pacing site selector having an input, the pacing site selector communicatively coupled to the user interface and configured to: receive a measure of a QRS complex duration into the pacing site selector input; measure a time of occurrence of a peak of depolarization of a right ventricle (RV) and a time of a peak of occurrence of depolarization of a left ventricle (LV); determine, as a first generated therapy setting, a pacing site according to the measure of QRS complex duration and the time relationship of the depolarization peak of the RV and the depolarization peak of the LV; and provide the determined pacing site to at least one of a user or a process executing on the external medical device or a process of a different device.