Hybrid LVEDP monitor
OwnerKevin M. McIntyreinventor
Life of this patent
Estimating the term…
Abstract
An apparatus for validating a non-invasively obtained estimate of LVEDP includes a non-invasive system for non-invasively obtaining a first estimate of the LVEDP; an invasive system for invasively obtaining a second estimate of the LVEDP concurrent with the first estimate; and a processor for comparing the first and second estimates of the LVEDP.
Claims18
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.
A method for validating a non-invasively obtained estimate of LVEDP, the method comprising:
- non-massively obtaining a first estimate of an LVEDP;
- invasively obtaining a second estimate of the LVEDP;
- and
- comparing the first and second estimates of the LVEDP;
- wherein non-invasively obtaining a first estimate of an LVEDP includes:
- non-invasively obtaining a first pressure waveform;
- non-invasively obtaining a second pressure waveform;
- detecting a time of occurrence of an event in a cardiac cycle;
- and
- selecting a segment from each of the first and second pressure waveforms and connecting the segments on the basis of the time of occurrence of the event.
A hybrid LVEDP monitor for validating a non-invasively obtained estimate of LVEDP, the monitor comprising:
- means for non-invasively obtaining a first estimate of the LVEDP;
- means for invasively obtaining a second estimate of the LVEDP concurrent with the first estimate;
- and
- means for validating the first estimate at least in part on the basis of the second estimate;
- wherein means for non-invasively obtaining a first estimate of the LVEDP includes:
- means for non-invasively obtaining a first pressure waveform;
- means for non-invasively obtaining a second pressure waveform;
- means for detecting a time of occurrence of an event in a cardiac cycle;
- and
- means for selecting a segment from each of the first and second pressure waveforms and connecting the segments on the basis of the time of occurrence of the event.
A computer-readable medium having encoded thereon software for validating a non-invasively obtained estimate of LVEDP, said software comprising instructions for causing a processing system to:
- receive data representative of a non-invasively obtained first estimate of an LVEDP;
- and
- receive data representative of an invasively obtained second estimate of the LVEDP;
- and
- compare the first and second estimates of the LVEDP;
- wherein the instructions for causing a computer to receive data representative of a non-invasively obtained first estimate of an LVEDP include instructions for causing a computer to:
- receive data representative of a non-invasively obtained first pressure waveform;
- receive data representative of a non-invasively obtained second pressure waveform;
- detect a time of occurrence of an event in a cardiac cycle;
- and to
- select a segment from each of the first and second pressure waveforms and to connect the segments on the basis of the time of occurrence of the event.
Dependencies are inferred from the claim text.