Method and apparatus for identifying patients with wide QRS complexes
First Claim
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1. An external system configured to be communicatively coupled to an implantable medical device, the external system comprising:
- an external telemetry circuit configured to communicate with the implantable medical device;
a user interface coupled to the external telemetry circuit, the user interface including a screen; and
a wide-QRS detection and alerting circuit coupled to the user interface, the wide-QRS detection and alerting circuit including;
a wide-QRS detector including a signal input to receive an electrocardiogram (ECG) signal, a QRS width measurement module configured to measure the QRS width using the received ECG signal, and a QRS width comparator having a first input to receive the measured QRS width, a second input to receive a threshold QRS width, and an output indicative of a detection of a wide QRS complex when the measured QRS width exceeds the threshold QRS width; and
a wide-QRS indicator coupled to the wide-QRS detector, the wide-QRS indicator including an image generator configured to present a message window on the screen in response to the detection of the wide QRS complex, the message window displaying a message indicative of the detection of the wide QRS complex.
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Abstract
A medical device programmer or other external system capable of programming an implantable CRM device includes a wide-QRS detection and alerting system. Upon detection of a wide QRS complex, a wide-QRS indicator produces a visual indication of the detection using one or more presentation devices such as a display screen and a printer to alert a physician or other caregiver.
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Citations
20 Claims
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1. An external system configured to be communicatively coupled to an implantable medical device, the external system comprising:
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an external telemetry circuit configured to communicate with the implantable medical device;
a user interface coupled to the external telemetry circuit, the user interface including a screen; and
a wide-QRS detection and alerting circuit coupled to the user interface, the wide-QRS detection and alerting circuit including;
a wide-QRS detector including a signal input to receive an electrocardiogram (ECG) signal, a QRS width measurement module configured to measure the QRS width using the received ECG signal, and a QRS width comparator having a first input to receive the measured QRS width, a second input to receive a threshold QRS width, and an output indicative of a detection of a wide QRS complex when the measured QRS width exceeds the threshold QRS width; and
a wide-QRS indicator coupled to the wide-QRS detector, the wide-QRS indicator including an image generator configured to present a message window on the screen in response to the detection of the wide QRS complex, the message window displaying a message indicative of the detection of the wide QRS complex. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for operating an external system configured to communicate with an implantable medical device implanted in a patient, the method comprising:
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receiving an electrocardiogram (ECG) signal sensed from the patient;
measuring a QRS width from the received ECG signal;
detecting a wide QRS complex by comparing the measured QRS width to a threshold QRS width; and
presenting a message window on a display screen of the external system in response to a detection of the wide QRS complex, the message window displaying a message indicative of the detection of the wide QRS complex. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification