Patent ID: 7529584

Claim:
A method for delivering physiological pacing, the method comprising the steps of: identifying a zone within an interventricular septum of a patient's heart, which is in proximity to the bundle of His where pacing stimulation results in a rhythm breaking out at an intrinsic location; mapping locations within the identified interventricular septal zone according to a ratio of measured P-wave amplitude to R-wave amplitude and a pacing threshold measurement; selecting an electrode implant site from the mapped locations where a mapped location exhibits a ratio of P-wave amplitude to R-wave amplitude that is less than approximately 0.5 and exhibits a pacing threshold is less than or equal to approximately 1.5 volts; and positioning an electrode at the selected implant site to deliver physiological pacing, wherein the step of mapping locations comprises measuring a P-wave amplitude and an R-wave amplitude at each mapped location to determine the ratio and measuring a pacing threshold at each mapped location.