Systems and methods for detecting and reporting arrhythmias

1. A system for monitoring cardiac arrhythmia, comprising:

an arrhythmia detector circuit configured to:

receive a physiologic signal and a first detection algorithm having a first sensitivity, the first detection algorithm including a detection criterion for detecting a cardiac arrhythmia;

detect an arrhythmia episode from the physiologic signal using a second detection algorithm having a second sensitivity higher than the first sensitivity than the first detection algorithm to prevent or reduce false negative detection of the cardiac arrhythmia; and

determine a detection indicator for the arrhythmia episode detected by the second detection algorithm, the detection indicator indicating a likelihood that the detected arrhythmia episode satisfies the detection criterion of the first detection algorithm;

an event prioritizer circuit configured to prioritize the detected arrhythmia episode according to the detection indicator; and

a user interface configured to:

display the detected arrhythmia episode if the detection indicator indicates that the detected arrhythmia episode satisfies the detection criterion of the first detection algorithm; and

provide an indication to a user that the detected arrhythmia episode is stored and displayable on demand if the detection indicator indicates that the detected arrhythmia episode does not satisfy the detection criterion of the first detection algorithm.

2. The system of claim 1 , wherein the arrhythmia detector circuit is configured to generate the second detection algorithm by adjusting one or more detection parameters of the first detection algorithm.

3. The system of claim 2 , wherein the one or more detection parameters include a first detection threshold, and the arrhythmia detector circuit is configured to generate the second detection algorithm by reducing the first detection threshold to a lower second detection threshold.

4. The system of claim 1 , comprising a memory circuit configured to store the detected arrhythmia episode, and a control circuit is configured to prioritize storage of the detected arrhythmia episode in the memory circuit according to the prioritization of the arrhythmia episode.

5. The system of claim 4 , wherein the control circuit is configured to prioritize storage of a detected arrhythmia episode that satisfies the detection criterion of the first detection algorithm over storage of another detected arrhythmia episode that does not satisfy the detection criterion of the first detection algorithm.

6. The system of claim 1 , comprising an ambulatory device communicatively coupled to an external device, the ambulatory device including a transceiver circuit and one or more of the arrhythmia detector circuit and the event prioritizer circuit, wherein the transceiver circuit is configured to transmit the detected arrhythmia episode to the external device according to the prioritization of the arrhythmia episode.

7. The system of claim 6 , comprising a control circuit configured to prioritize transmission of a detected arrhythmia episode that satisfies the detection criterion of the first detection algorithm over transmission of another detected arrhythmia episode that does not satisfy the detection criterion of the first detection algorithm.

8. The system of claim 1 , comprising an output circuit configured to present the detected arrhythmia episode to a user or a process, and a control circuit configured to prioritize presentation of the detected arrhythmia episode according to the prioritization of the arrhythmia episode.

9. The system of claim 8 , wherein the control circuit is configured to prioritize a presentation of a detected arrhythmia episode that satisfies the detection criterion of the first detection algorithm over a presentation of another arrhythmia episode that does not satisfy the detection criterion of the first detection algorithm.

10. The system of claim 1 , wherein the event prioritizer circuit is configured to prioritize the detected arrhythmia episode further using a comparison to a patient-triggered episode.

11. The system of claim 1 , wherein the event prioritizer circuit is configured to prioritize the detected arrhythmia episode further using a comparison to patient symptom.

12. The system of claim 1 , comprising a therapy circuit configured to generate a therapy for treating arrhythmia in response to the detection of the arrhythmia episode.

13. A method for monitoring cardiac arrhythmias using a cardiac monitoring system, the method comprising:

receiving a user programming of a first detection algorithm having a first sensitivity, the first detection algorithm including a detection criterion for detecting a cardiac arrhythmia;

determining a second detection algorithm based on the received first detection algorithm via an arrhythmia detector circuit, the second detection algorithm having a second sensitivity higher than the first sensitivity than the first detection algorithm to prevent or reduce false negative detection of the cardiac arrhythmia;

detecting an arrhythmia episode from a physiologic signal via the arrhythmia detector circuit using the second detection algorithm;

determining a detection indicator for the arrhythmia episode detected by the second detection algorithm via the arrhythmia detector circuit, the detection indicator indicating a likelihood that the detected arrhythmia episode satisfies the detection criterion of the first detection algorithm;

prioritizing the detected arrhythmia episode via an event prioritizer circuit according to the detection indicator;

displaying the detected arrhythmia episode if the detection indicator indicates the detected arrhythmia episode satisfies the detection criterion of the first detection algorithm; and

providing an indication to a user that the detected arrhythmia episode is stored and displayable on demand if the detection indicator indicates the detected arrhythmia episode does not satisfy the detection criterion of the first detection algorithm.

14. The method of claim 13 , wherein determining the second detection algorithm includes adjusting one or more detection parameters of the first detection algorithm.

15. The method of claim 14 , wherein adjusting the one or more detection parameters includes reducing a first detection threshold of the first detection algorithm to a lower second detection threshold of the second detection algorithm.

16. The method of claim 13 , comprising storing the detected arrhythmia episode in a memory circuit according to the prioritization of the arrhythmia episode.

17. The method of claim 13 , comprising transmitting the detected arrhythmia episode to an external device according to the prioritization of the arrhythmia episode.

18. A system for monitoring cardiac arrhythmia, comprising:

an arrhythmia detector circuit configured to:

receive a physiologic signal;

determine a presence of an arrhythmia in the physiologic signal using a first detection algorithm having a first sensitivity; and

for the same physiologic signal, determine the presence of the arrhythmia in the physiologic signal using a second detection algorithm having a second sensitivity higher than the first sensitivity than the first detection algorithm to prevent or reduce false negative detection by the first detection algorithm; and

a user interface configured to:

display the physiologic signal in response to the presence of the arrhythmia determined by the first detection algorithm and the presence of the arrhythmia determined by the second detection algorithm; and

provide an indication to a user that the physiologic signal is stored and displayable on demand in response to the presence of the arrhythmia determined by the second detection algorithm and no presence of the arrhythmia determined by the first detection algorithm.

19. The system of claim 18 , wherein the first detection algorithm includes a first detection threshold, and the second detection algorithm includes a second detection threshold lower than the first detection threshold.

20. The system of claim 18 , comprising a control circuit configured to prioritize storage of the physiologic signal in a memory device, or to prioritize transmission of the physiologic signal to an external device, based on at least one of the presence of the arrhythmia determined by the first detection algorithm or the presence of the arrhythmia determined by the second detection algorithm.