Patent ID: 7404800
Filing Date: 2008-07-29
Classification: A61B

Abstract:
1. An apparatus for validating a non-invasively obtained estimate of LVEDP, the apparatus comprising: a non-invasive system for obtaining a non-invasive estimate of the LVEDP; an invasive system for obtaining an invasive estimate of the LVEDP concurrent with the non-invasive system; and a processor for comparing the non-invasive and invasive estimates of the LVEDP; wherein the non-invasive system includes: a first amplitude sensor for non-invasively obtaining a first pressure waveform; a second amplitude sensor for non-invasively obtaining a second pressure waveform; an event sensor for detecting a time of occurrence of an event in a cardiac cycle; and a processor in communication with said first and second amplitude sensors and with said event sensor, said processor being configured to select a segment from each of said first and second waveforms and to connect said segments on the basis of said time of occurrence of said event.