Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2004-02-19
2009-02-10
Nasser, Robert L (Department: 3735)
Surgery
Diagnostic testing
Cardiovascular
C600S500000, C600S547000
Reexamination Certificate
active
07488290
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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Hatlestad John D.
Hopper Donald L.
Kadhiresan Veerichetty
Stahmann Jeffrey E.
Cardiac Pacemakers Inc.
Inouye Patrick J. S.
Nasser Robert L
Smith Scott E.
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