Diagnosis of atrial fusion, atrial pseudofusion and/or native atrial activity
First Claim
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1. A method of determining whether atrial fusion and/or atrial pseudofusion occurred during atrial stimulation, the method comprising:
- monitoring for atrial activity in response to an atrial stimulus;
determining that atrial capture did not occur if the atrial activity is not detected;
initiating a ventricular sensing window for sensing ventricular activity responsive to the atrial stimulus;
monitoring for ventricular activity responsive to the atrial stimulus in the ventricular sensing window; and
deciding that atrial fusion and/or atrial pseudofusion occurred if ventricular activity responsive to the atrial stimulus was detected in the ventricular sensing window.
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Abstract
Exemplary methods and devices for determining whether atrial fusion, atrial pseudofusion and/or atrial native activity have occurred. Various methods and/or devices are suitable for use with atrial autocapture. Other methods, devices and/or systems are also disclosed.
121 Citations
14 Claims
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1. A method of determining whether atrial fusion and/or atrial pseudofusion occurred during atrial stimulation, the method comprising:
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monitoring for atrial activity in response to an atrial stimulus; determining that atrial capture did not occur if the atrial activity is not detected; initiating a ventricular sensing window for sensing ventricular activity responsive to the atrial stimulus; monitoring for ventricular activity responsive to the atrial stimulus in the ventricular sensing window; and deciding that atrial fusion and/or atrial pseudofusion occurred if ventricular activity responsive to the atrial stimulus was detected in the ventricular sensing window. - View Dependent Claims (2, 3, 4, 5)
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6. A method of determining whether atrial fusion and/or atrial pseudofusion occurred during atrial autocapture comprising:
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monitoring for atrial activity responsive to an atrial stimulus; initially determining that atrial capture did not occur; monitoring for ventricular activity responsive to the atrial stimulus; determining whether ventricular activity responsive to the atrial stimulus was detected during the sensing; comparing the sensed ventricular activity responsive to the atrial stimulus to known information if ventricular activity was detected; and deciding whether atrial fusion and/or atrial pseudofusion occurred on the basis of the comparing. - View Dependent Claims (7, 8, 9)
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10. An implantable pacing device comprising:
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means for storing information related to ventricular activity responsive to an atrial stimulus; means for determining whether atrial capture occurs in response to an atrial stimulus; means for sensing ventricular activity responsive to an atrial stimulus; and means, responsive to a determination that atrial capture did not occur, for comparing sensed ventricular activity to the information to determine whether atrial fusion and/or atrial pseudofusion occurred. - View Dependent Claims (11, 12, 13, 14)
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Specification