System and method for assessing cardiac performance through transcardiac impedance monitoring
First Claim
1. A system for assessing cardiac performance through transcardiac impedance monitoring, comprising:
- an implantable medical device to directly collect intracardiac impedance measures;
a correlation component to correlate the intracardiac impedance measures to cardiac pressure measures relative to performance of an intrathoracic pressure maneuver and to group the cardiac pressure measures into at least one measures set corresponding to a temporal phase of the intrathoracic pressure maneuver; and
an analysis component to evaluate the at least one cardiac pressure measures set against a cardiac pressure trend for the corresponding intrathoracic pressure maneuver temporal phase to represent cardiac performance.
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Abstract
A system and method for assessing cardiac performance through transcardiac impedance monitoring is described. Intracardiac impedance measures are directly collected through an implantable medical device. The intracardiac impedance measures are correlated to cardiac dimensional measures relative to performance of an intrathoracic pressure maneuver. The cardiac dimensional measures are grouped into at least one measures set corresponding to a temporal phase of the intrathoracic pressure maneuver. The at least one cardiac dimensional measures set is evaluated against a cardiac dimensional trend for the corresponding intrathoracic pressure maneuver temporal phase to represent cardiac performance.
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Citations
29 Claims
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1. A system for assessing cardiac performance through transcardiac impedance monitoring, comprising:
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an implantable medical device to directly collect intracardiac impedance measures; a correlation component to correlate the intracardiac impedance measures to cardiac pressure measures relative to performance of an intrathoracic pressure maneuver and to group the cardiac pressure measures into at least one measures set corresponding to a temporal phase of the intrathoracic pressure maneuver; and an analysis component to evaluate the at least one cardiac pressure measures set against a cardiac pressure trend for the corresponding intrathoracic pressure maneuver temporal phase to represent cardiac performance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for assessing cardiac performance through transcardiac impedance monitoring, comprising:
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directly collecting intracardiac impedance measures through an implantable medical device; correlating the intracardiac impedance measures to cardiac pressure measures relative to performance of an intrathoracic pressure maneuver; grouping the cardiac pressure measures into at least one measures set corresponding to a temporal phase of the intrathoracic pressure maneuver; and evaluating the at least one cardiac pressure measures set against a cardiac pressure trend for the corresponding intrathoracic pressure maneuver temporal phase to represent cardiac performance. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An apparatus for assessing cardiac performance through transcardiac impedance monitoring, comprising:
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means for directly collecting intracardiac impedance measures through an implantable medical device; means for correlating the intracardiac impedance measures to cardiac pressure measures relative to performance of an intrathoracic pressure maneuver; means for grouping the cardiac pressure measures into at least one measures set corresponding to a temporal phase of the intrathoracic pressure maneuver; and means for evaluating the at least one cardiac pressure measures set against a cardiac pressure trend for the corresponding intrathoracic pressure maneuver temporal phase to represent cardiac performance.
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Specification