Patent ID: 9474457
Filing Date: 2016-10-25
CPC Classification: A61B,A61N

Claim Text:
1. A method of cardiac pacing comprising: a) sensing heart activity using a plurality of body-surface electrodes; (b) using a processor to determine (c) delivering resynchronization pacing using a right ventricular electrode and pacing a left ventricular electrode or only pacing with a left ventricular electrode; (d) using the processor to determine a set of functional electrical metrics relating to cardiac depolarization and repolarization in response to the resynchronization pacing; (e) using the processor to determine whether relative reduction of at least one functional electrical metric from the set of functional electrical metrics in step d exceeds X % of its corresponding value from the set of baseline functional electrical metrics in step b; (f) in response to determining that relative reduction of at least one functional electrical metric from the set of functional electrical metrics in step d exceeds X %, using the processor to determine whether an absolute value of at least one electrical metric from the set of the functional electrical metrics in step d is less than Y ms; and (g) using the processor to determine that a site is responsive to cardiac resynchronization therapy (CRT) in response to determining whether step f) is met.