Hemodynamic morphological analysis for rhythm identification
OwnerAllan C. Shuros, Dan Liinventors
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Abstract
This document discusses, among other things, an apparatus comprising an implantable hemodynamic sensor circuit that provides a hemodynamic signal representative of mechanical function of a cardiovascular system of a subject and a controller circuit communicatively coupled to the hemodynamic sensor circuit. The controller circuit includes a detection module configured to detect an onset of tachyarrhythmia, a signal analyzer module configured to determine a measure of morphological variability of the hemodynamic signal during the episode of tachyarrhythmia, and a rhythm discrimination module configured to deem whether the tachyarrhythmia episode is indicative of ventricular tachycardia (VT) according to the measure of morphological variability.
Claims32
An apparatus comprising:
- an implantable hemodynamic sensor circuit, wherein the hemodynamic sensor circuit provides a hemodynamic signal, other than an intrinsic electrical cardiac signal, and wherein the hemodynamic signal is representative of mechanical function of a cardiovascular system of a subject;
- and
- a controller circuit, communicatively coupled to the hemodynamic sensor circuit, wherein the controller circuit includes:
- a detection module configured to detect an onset of an episode of tachyarrhythmia;
- a signal analyzer module configured to determine a measure of morphological variability of the hemodynamic signal during the episode of tachyarrhythmia;
- and
- a rhythm discrimination module configured to use the measure of morphological variability to derive an indication of whether the tachyarrhythmia episode is indicative of ventricular tachycardia (VT).
A method comprising:
- sensing a hemodynamic signal, other than an intrinsic electrical signal, using an implantable sensor, wherein the hemodynamic signal comprises a signal representative of mechanical function of a cardiovascular system of a subject;
- detecting an onset of an episode of tachyarrhythmia;
- determining a measure of morphological variability of the hemodynamic signal during the episode of tachyarrhythmia;
- and
- deriving an indication of whether the onset of the episode of tachyarrhythmia is indicative of VT by using the measure of morphological variability.
Dependencies are inferred from the claim text.