Method and apparatus for identifying potentially misclassified arrhythmic episodes

摘要

An implantable cardiac device is configured to classify cardiac arrhythmias using a plurality of arrhythmia discrimination algorithms. Data is provided that is associated with a plurality of cardiac arrhythmic episodes for which a cardiac electrical therapy was delivered or withheld by the implantable medical device based on the plurality of arrhythmia discrimination algorithms. A metric for each of the arrhythmic episodes is computed. The metric defines a measure by which the implantable cardiac device properly classified the arrhythmia. Potentially misclassified arrhythmic episodes of the plurality of cardiac arrhythmic episodes for which cardiac electrical therapy was inappropriately delivered or withheld are algorithmically identified using the metric.

主权项

1. A system, comprising:
an implantable cardiac device (ICD), comprising:
sensing circuitry configured to sense cardiac electrical activity;energy delivery circuitry configured to deliver cardiac electrical therapy to treat cardiac tachyarrhythmias;a local processor coupled to the sensing circuitry and the energy delivery circuitry;a local memory coupled to the local processor and configured to store a plurality of cardiac tachyarrhythmia discrimination algorithms and LCD data produced by the local processor, the ICD data comprising data associated with a plurality of cardiac tacharrhythmic episodes classified by the ICD based on the plurality of tachyarrhythmia discrimination algorithms; andcommunications circuitry coupled to the local processor; and an external device, comprising:
a communications interface configured to receive the LCD data;an external memory configured to store the LCD data and an external discrimination algorithm (EDA) different from the cardiac tachyarrhythmia discrimination algorithms stored in the ICD , the EDA comprising one or more cardiac tachyarrhythmia discrimination algorithms requiring computational resources exceeding those offered by the ICD; andan external processor coupled to the communications interface and the external memory, the external processor configured to apply the EDA to the ICD data stored in the external memory to automatically classify the plurality of cardiac tacharrhythmic episodes classified by the ICD without requiring user intervention, the external processor configured to generate a validation metric based on a comparison between the ICD and external device classifications of each of the plurality of cardiac tacharrhythmic episodes, the validation metric indicative of a level of confidence of the ICD properly classifying the plurality of cardiac tacharrhythmic episodes.