Patent ID: 8150513

Claim:
A computer readable medium programmed with instructions for performing a method for assessing left ventricular function and optimizing cardiac pacing intervals in a device programmed to deliver a cardiac resynchronization therapy (CRT), comprising: instructions for sensing movement of a left ventricular lateral wall a heart with a deployed movement transducer and for measuring a motion signal from the transducer related to the movement of the left ventricular lateral wall; instructions for opening a data collection window during a portion of a selected cardiac cycle phase; instructions for storing the motion signal throughout at least a part of the portion of the data collection window for a predetermined time interval or for more than one cardiac cycle; instructions for verifying a stability characteristic of the motion signal during the predetermined time interval or for more than one cardiac cycle; instructions for averaging the stored motion signal; instructions for determining a signal characteristic from the averaged stored signal that is representative of left ventricular function; and instructions for delivering a cardiac resynchronization therapy (CRT) based at least in part upon the signal characteristic.