Detection of relaxation abnormality in heart tissue

摘要

A chronically implanted medical device, connected to a medical electrical lead that includes a sensor, is used to detect diastolic dysfunction. A LV accelerometer signal is sensed through the sensor. Based on the LV accelerometer signal, a determination is made as to whether diastolic dysfunction data exists.

主权项

1. An automated method to detect relaxation abnormality in heart tissue through a chronically implanted medical device connected to a medical electrical lead, the method comprising:
sensing a LV accelerometer signal through an implantable mechanical sensor affixed to the medical electrical lead, the mechanical sensor disposed at or near a right ventricle (RV) or a left ventricle (LV) of a patient; extracting data of a complete contraction period from the LV accelerometer signal wherein the complete contraction period is a PQRS complex; comparing the extracted complete contraction period data to a baseline data; and determining whether diastolic dysfunction exists based upon comparing the extracted complete contraction period data to the baseline data.