Method and system for characterizing cardiac function based on dynamic impedance

US9179846B2 · kind B2 · utility

Assignee

• PACESETTER, INC. · US

Inventors

• Wenbo Hou · Santa Clarita, US
• Kritika Gupta · Mumbai, IN
• Bruce A. Morley · Sunnyvale, US
• Laurence S. Sloman · West Hollywood, US
• Rupinder Bharmi · Santa Clarita, US
• Xiaoyi Min · Thousand Oaks, US
• Riddhi Shah · San Jose, US
• Gene A. Bornzin · Simi Valley, US
• Edward Karst · Los Angeles, US

Key dates

• Filing date: Mar 15, 2013
• Grant date: Nov 10, 2015
• Expiry date: Mar 15, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B5/1118
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method and system are provided for characterizing cardiac function. The method and system comprise collecting cardiac signals associated with electrical or mechanical behavior of a heart over at least one cardiac cycle; identifying a timing feature of interest (FOI) from the cardiac signals; collecting dynamic impedance (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; and 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.