ELECTROMECHANICAL DELAY (EMD) MONITORING DEVICES, SYSTEMS AND METHODS
First Claim
1. For use with an implantable system, a method for monitoring a patient'"'"'s electromechanical delay (EMD), the method comprising:
- (a) causing paced cardiac events by delivering sufficient pacing stimulation to cause capture to the patient'"'"'s heart;
(b) using one or more electrodes implanting within and/or on the patient'"'"'s heart to obtain a cardiogenic impedance (CI) signal indicative of cardiac contractile activity while the patient'"'"'s heart is being paced at step (a);
(c) detecting one or more predetermined features of the obtained CI signal; and
(d) determining one or more values indicative of the patient'"'"'s electromechanical delay (EMD) by determining a time between a pacing stimulation delivered at step (a) and at least one of the one or more features of the CI signal detected at step (c).
1 Assignment
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Accused Products
Abstract
Provided herein are implantable systems, and methods for use therewith, for monitoring a patient'"'"'s electromechanical delay (EMD). Paced cardiac events are caused by delivering sufficient pacing stimulation to cause capture to the patient'"'"'s heart. A cardiogenic impedance (CI) signal, indicative of cardiac contractile activity in response to the pacing stimulation being delivered, is obtained. One or more predetermined features of the CI signal are detected, and a value indicative of the patient'"'"'s EMD is determined by determining a time between a delivered pacing stimulation and at least one of the detected one or more features of the CI signal.
38 Citations
10 Claims
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1. For use with an implantable system, a method for monitoring a patient'"'"'s electromechanical delay (EMD), the method comprising:
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(a) causing paced cardiac events by delivering sufficient pacing stimulation to cause capture to the patient'"'"'s heart; (b) using one or more electrodes implanting within and/or on the patient'"'"'s heart to obtain a cardiogenic impedance (CI) signal indicative of cardiac contractile activity while the patient'"'"'s heart is being paced at step (a); (c) detecting one or more predetermined features of the obtained CI signal; and (d) determining one or more values indicative of the patient'"'"'s electromechanical delay (EMD) by determining a time between a pacing stimulation delivered at step (a) and at least one of the one or more features of the CI signal detected at step (c). - View Dependent Claims (2, 3, 4, 5)
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6. An implantable system, comprising:
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a pulse generator configured to generate pacing stimulation sufficient to cause capture, which can be delivered to a patient'"'"'s heart using at least one electrode implanted within or on the patient'"'"'s heart; a cardiogenic impedance measurement circuit configured to obtain a cardiogenic impedance (CI) signal indicative of cardiac contractile activity; an electromechanical delay (EMD) monitor configured to detect one or more predetermined features of a CI signal obtained using the CI measuring circuit while the patient'"'"'s heart is being paced using the pulse generator; and determine one or more values indicative of the patient'"'"'s electromechanical delay (EMD) by determining a time between a pacing stimulation delivered to the patient'"'"'s heart and at least one of the one or more predetermined features of the CI signal. - View Dependent Claims (7, 8, 9, 10)
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Specification