Adaptive sensing threshold for cross-chamber refractory period

摘要

A cross-chamber refractory period with an adaptively adjusted sensing threshold for use by a cardiac pacemaker is disclosed. In response to a cross-chamber event, the sensing threshold of a sensing channel is raised to an adaptively adjusted cross-chamber maximum refractory value. The cross-chamber maximum refractory value is derived from a peak amplitude measurement of the far-field signal resulting from the cross-chamber event.