Selection of optimal channel for rate determination

Abstract

According to at least one example, an ambulatory medical device is provided. The device includes a plurality of electrodes disposed at spaced apart positions about a patient's body and a control unit. The control unit includes a sensor interface, a memory and a processor. The sensor interface is coupled to the plurality of electrodes and configured to receive a first ECG signal from a first pairing of the plurality of electrodes and to receive a second ECG signal from a second pairing of the plurality of electrodes. The memory stores information indicating a preferred pairing, the preferred pairing being either the first pairing or the second pairing. The processor is coupled to the sensor interface and the memory and is configured to resolve conflicts between interpretations of first ECG signal and the second ECG signal in favor of the preferred pairing.

1 .- 20 . (canceled) 
     
     
         21 . A wearable cardiac defibrillator comprising:
 a plurality of electrodes disposed about a patient, the plurality of electrodes comprising a first pair of electrodes forming a first electrocardiogram (ECG) channel and a second pair of electrodes forming a second ECG channel; and   a control unit comprising
 a sensor interface coupled to the plurality of electrodes and configured to receive ECG signals from the patient via the plurality of electrodes, 
 a memory configured to store a set of information indicating an identified ECG channel of the first ECG channel and the second ECG channel, and 
 at least one processor coupled to the sensor interface and the memory and configured to
 establish the set of information for the first ECG channel and the second ECG channel based upon information received from a physician, 
 store the set of information in the memory, 
 determine, based upon the set of information, the identified ECG channel, 
 acquire at least one ECG signal from the identified ECG channel, 
 monitor the at least one ECG signal from the identified ECG channel for an indication of a cardiac arrhythmia being experienced by the patient, and 
 in response to the patient experiencing a cardiac arrhythmia, deliver therapy to the patient. 
 
   
     
     
         22 . The wearable cardiac defibrillator of  claim 21 , wherein to establish the set of information for the first ECG channel and the second ECG channel comprises to rank the first ECG channel and the second ECG channel. 
     
     
         23 . The wearable cardiac defibrillator of  claim 22 , wherein the first ECG channel comprises a front-to-back channel and the second ECG channel comprises a side-to-side channel. 
     
     
         24 . The wearable cardiac defibrillator of  claim 22 , wherein to determine the identified ECG channel comprises to identify a highest ranking channel. 
     
     
         25 . The wearable cardiac defibrillator of  claim 21 , further comprising a network interface, wherein to establish the set of information for the first ECG channel and the second ECG channel comprises to establish the set of information via the network interface. 
     
     
         26 . The wearable cardiac defibrillator of  claim 25 , wherein to establish the set of information for the first ECG channel and the second ECG channel comprises to rank the first ECG channel and the second ECG channel. 
     
     
         27 . The wearable cardiac defibrillator of  claim 26 , wherein the first ECG channel comprises a front-to-back channel and the second ECG channel comprises a side-to-side channel. 
     
     
         28 . The wearable cardiac defibrillator of  claim 26 , wherein to determine the identified ECG channel comprises to identify a highest ranking channel. 
     
     
         29 . The wearable cardiac defibrillator of  claim 25 , further comprising a garment that is configured to be worn about the patient, wherein the plurality of electrodes is integrated into the garment. 
     
     
         30 . The wearable cardiac defibrillator of  claim 25 , wherein the plurality of electrodes includes adhesive electrodes. 
     
     
         31 . The wearable cardiac defibrillator of  claim 25 , wherein to monitor the at least one ECG signal comprises to monitor a heart rate of the patient. 
     
     
         32 . The wearable cardiac defibrillator of  claim 31 , wherein to monitor the heart rate of the patient comprises to utilize one or more of a QRS detector, a spectrum analyzer, or an axis analyzer. 
     
     
         33 . The wearable cardiac defibrillator of  claim 21 , further comprising a user interface, wherein to establish the set of information for the first ECG channel and the second ECG channel comprises to establish the set of information via the user interface. 
     
     
         34 . The wearable cardiac defibrillator of  claim 33 , wherein to establish the set of information for the first ECG channel and the second ECG channel comprises to rank the first ECG channel and the second ECG channel. 
     
     
         35 . The wearable cardiac defibrillator of  claim 34 , wherein the first ECG channel comprises a front-to-back channel and the second ECG channel comprises a side-to-side channel. 
     
     
         36 . The wearable cardiac defibrillator of  claim 34 , wherein to determine the identified ECG channel comprises to identify the highest ranking channel. 
     
     
         37 . The wearable cardiac defibrillator of  claim 33 , further comprising a garment that is configured to be worn about the patient, wherein the plurality of electrodes is integrated into the garment. 
     
     
         38 . The wearable cardiac defibrillator of  claim 33 , wherein the plurality of electrodes includes adhesive electrodes. 
     
     
         39 . The wearable cardiac defibrillator of  claim 33 , wherein to monitor the at least one ECG signal comprises to monitor a heart rate of the patient. 
     
     
         40 . The wearable cardiac defibrillator of  claim 39 , wherein to monitor the heart rate of the patient comprises to utilize one or more of a QRS detector, a spectrum analyzer, or an axis analyzer.