Patent ID: 9179846
Filing Date: 2015-11-10
Classification: A61B,A61N

Abstract:
1. A method for characterizing cardiac function, comprising: coupling an implantable electrode to a processing circuitry to collect cardiac signals associated with electrical or mechanical behavior of a heart over at least one cardiac cycle; applying a cardiac signal (CS) module to identify a timing feature of interest (FOI) from the cardiac signals; applying a dynamic impedance (DI) module to collect DI data over at least one cardiac cycle (CC), designated by the timing FOI, along at least one of i) a venous return (VR) vector or ii) a right ventricular function (RVF) vector; analyzing at least one morphologic characteristic from the DI data based on at least one of i) a VR-DI correlation metric to obtain a VR indicator associated with the CC or ii) a RVF-DI correlation metric to obtain a RVF indicator associated with CC.