Patent ID: 8725260

Claim:
A method of performing rhythm discrimination within the body of a patient, comprising: receiving an electrical activity signal from an electrode located within or adjacent to the heart; detecting an event of the heart based at least in part on the electrical activity signal; receiving a physiological mechanical activity signal from a pressure sensor located in a pulmonary artery of the patient, the pressure sensor configured to sense both atrial contraction and ventricular contraction within the heart; analyzing the physiological mechanical activity signal received from the pressure sensor to determine an atrial contraction parameter and a ventricular contraction parameter associated with the heart; and confirming the event by comparing the atrial contraction parameter against the ventricular contraction parameter, wherein comparing the atrial contraction parameter against the ventricular contraction parameter comprises determining, based on the physiological mechanical activity signal, an atrium-ventricle (A/V) mechanical delay, and determining a type of the event based on the A/V mechanical delay.