Methods of monitoring hemodynamic status for rhythm discrimination within the heart
First Claim
1. A method of performing rhythm discrimination within the body of a patient, comprising:
- receiving an electrical activity signal from an electrode located within or adjacent to the heart;
detecting an event of the heart based at least in part on the electrical activity signal;
receiving a physiological mechanical activity signal from a pressure sensor located in a pulmonary artery of the patient, the pressure sensor configured to sense both atrial contraction and ventricular contraction within the heart;
analyzing the physiological mechanical activity signal received from the pressure sensor to determine an atrial contraction parameter and a ventricular contraction parameter associated with the heart; and
confirming the event by comparing the atrial contraction parameter against the ventricular contraction parameter, wherein comparing the atrial contraction parameter against the ventricular contraction parameter comprises determining, based on the physiological mechanical activity signal, an atrium-ventricle (A/V) mechanical delay, and determining a type of the event based on the A/V mechanical delay.
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Abstract
Systems and methods of performing rhythm discrimination within a patient'"'"'s body using sensed hemodynamic signals are disclosed. The method can include the steps of receiving an electrical activity signal from an electrode located within or near the heart, detecting an event of the heart based on the received electrical activity signal, sensing one or more mechanical measurements using a sensor located within the body, analyzing a mechanical activity signal received from the sensor, and confirming the type of event based on the mechanical and electrical activity signals. The sensor can comprise a single pressure sensor configured to sense both atrial and ventricular activity within the heart.
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Citations
15 Claims
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1. A method of performing rhythm discrimination within the body of a patient, comprising:
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receiving an electrical activity signal from an electrode located within or adjacent to the heart; detecting an event of the heart based at least in part on the electrical activity signal; receiving a physiological mechanical activity signal from a pressure sensor located in a pulmonary artery of the patient, the pressure sensor configured to sense both atrial contraction and ventricular contraction within the heart; analyzing the physiological mechanical activity signal received from the pressure sensor to determine an atrial contraction parameter and a ventricular contraction parameter associated with the heart; and confirming the event by comparing the atrial contraction parameter against the ventricular contraction parameter, wherein comparing the atrial contraction parameter against the ventricular contraction parameter comprises determining, based on the physiological mechanical activity signal, an atrium-ventricle (A/V) mechanical delay, and determining a type of the event based on the A/V mechanical delay. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of performing rhythm discrimination within the body of a patient, comprising:
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providing an implantable medical device including a control unit adapted to run an algorithm for detecting arrhythmia events within the heart; receiving an electrical activity signal from an electrode located within or adjacent to the heart; detecting an arrhythmia event of the heart based at least in part on the electrical activity signal; responsive to detecting the arrhythmia event, prompting a pressure sensor located within a pulmonary artery of the patient to activate and sense one or more physiological pressure measurements associated with the atrial contraction and ventricular contraction of the heart; determining, based at least in part on the sensed physiological pressure measurements received from the sensor, an atrial contraction rate and a ventricular contraction rate; confirming the event by comparing the atrial contraction rate against the ventricular contraction rate, wherein confirming the event further comprises determining, based on the sensed physiological pressure measurements, an atrium-ventricle (A/V) mechanical delay, and determining a type of the event based on the A/V mechanical delay; and providing a therapy to the patient in response to confirming the event. - View Dependent Claims (11, 12, 13)
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14. A system for performing rhythm discrimination within the body of a patient, comprising:
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an electrode configured to sense electrical activity of the heart and to provide an electrical activity signal based on the sensed electrical activity; a mechanical pressure sensor adapted to be located in a pulmonary artery, the sensor configured to sense a physiological mechanical activity signal comprising both atrial and ventricular contraction of the heart; and an implantable medical device in communication with the electrode and the sensor, the implantable medical device configured to; detect an arrhythmia event of the heart based at least in part on the electrical activity signal received from the electrode; analyze the physiological mechanical activity signal received from the sensor to determine an atrial contraction parameter and a ventricular contraction parameter associated with the heart; confirm the arrhythmia event by comparing the atrial contraction parameter against the ventricular contraction parameter to determine an atrium-ventricle (A/V) mechanical delay; determine a type of the event based on the A/V mechanical delay; provide therapy to the patient based at least in part on the comparison of the atrial contraction parameter against the ventricular contraction parameter, the A/V mechanical delay, and the electrical activity signal received from the electrode. - View Dependent Claims (15)
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Specification