System and method for detecting cardiac ischemia in real-time using a pattern classifier implemented within an implanted medical device
First Claim
1. A method for use with an implantable medical device for detecting cardiac ischemia in a patient in which the device is implanted, comprising:
- detecting a plurality of values representative of different morphological features of electrical cardiac signals, including ST segment parameters and one or both of atrial depolarization morphological parameters and ventricular depolarization morphological parameters; and
detecting whether the patient is subject to an on-going episode of cardiac ischemia by applying the plurality of values to a pattern classifier configured to identify patterns representative of cardiac ischemia.
1 Assignment
0 Petitions
Accused Products
Abstract
Pattern classification techniques are provided for use with an implantable medical device for detecting cardiac ischemia substantially in real-time. Values representative of morphological features of electrical cardiac signals are detected by the implantable medical device. Then, a determination is made as to whether the patient is subject to an on-going episode of cardiac ischemia by applying the values to a pattern classifier configured to identify patterns representative of cardiac ischemia. In one example, the determination is made substantially in real-time by the device itself based on the IEGM signals it detects. In other examples, the IEGM signals are relayed promptly to a bedside monitor or other external device, which analyzes the signals using the pattern classifier to detect ischemia. Therapy may be applied in response to cardiac ischemia. For example, if the implanted device is equipped with a drug pump, appropriate medications may be administered such as anti-thrombolytics.
68 Citations
20 Claims
-
1. A method for use with an implantable medical device for detecting cardiac ischemia in a patient in which the device is implanted, comprising:
-
detecting a plurality of values representative of different morphological features of electrical cardiac signals, including ST segment parameters and one or both of atrial depolarization morphological parameters and ventricular depolarization morphological parameters; and detecting whether the patient is subject to an on-going episode of cardiac ischemia by applying the plurality of values to a pattern classifier configured to identify patterns representative of cardiac ischemia. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A system for use with an implantable medical device for detecting cardiac ischemia in a patient in which the device is implanted, comprising:
-
a detection unit operative to detect a plurality of values representative of different morphological features of electrical cardiac signals, including ST segment parameters and one or both of atrial depolarization morphological parameters and ventricular depolarization morphological parameters; and a pattern recognition-based cardiac ischemia detection unit operative to detect whether the patient is subject to an on-going episode of cardiac ischemia by applying the plurality of values to a pattern classifier configured to identify patterns representative of cardiac ischemia. - View Dependent Claims (16, 17)
-
-
18. A system for use with an implantable medical device for detecting cardiac ischemia in a patient in which the device is implanted, comprising:
-
means for detecting a plurality of values representative of different morphological features of electrical cardiac signals, including ST segment parameters and one or both of atrial depolarization morphological parameters and ventricular depolarization morphological parameters; means for detecting whether the patient is subject to an on-going episode of cardiac ischemia by applying the plurality of values to a pattern classifier configured to identify patterns representative of cardiac ischemia; and means for delivering therapy in response to the detection of an episode of cardiac ischemia. - View Dependent Claims (19, 20)
-
Specification