Patent ID: 7912544

Claim:
A method comprising: detecting a QRS complex using cutaneous electrodes; during the QRS complex, detecting an R-wave of a ventricle using an intracardiac electrode; determining if the R-wave occurred during a first, predetermined percentage of the QRS complex width; based at least in part on the determining, assigning a value to an EGM/ECG parameter where the EGM/ECG parameter comprises a parameter of a score for assessing a patient's likelihood of responding to cardiac resynchronization therapy; sensing activity of the ventricle using at least the intracardiac electrode; sensing activity of the other ventricle using at least one different intracardiac electrode; determining an interval between activity of one ventricle and activity of the other ventricle wherein activation in one ventricle causes the activity in the other ventricle from either the right ventricle to the left ventricle or from the left ventricle to the right ventricle; and based at least in part on the determining, assigning a value to a IVCD parameter where the IVCD parameter comprises a parameter of a score for assessing the patient's likelihood of responding to cardiac resynchronization therapy.