System and method for adapting alarms in a wearable medical device

A wearable ambulatory external defibrillator system comprising:

• a garment configured to be worn by a patient, the garment comprising a plurality of electrocardiogram (ECG) sensing electrodes integrated into the garment, the plurality of sensing electrodes configured to obtain at least one ECG signal from the patient;
• a plurality of therapy delivery electrodes configured to deliver a therapy to the patient;
• a wearable medical device controller comprising at least one processor configured to be coupled to the plurality of ECG sensing electrodes and the plurality of therapy delivery electrodes, the at least one processor further configured to
• issue a first instance of an alarm in response to at least one of an indication of a cardiac abnormality in the patient or an event concerning one or more components of the wearable ambulatory external defibrillator system, wherein the first instance of the alarm comprises a visual alarm,
• determine that no response to the first instance of the alarm was received within a target response time,
• adapt at least one characteristic of the alarm responsive to determining that no response was received to the first instance of the alarm within the target response time, and
• issue a second instance of the alarm having the at least one adapted characteristic, wherein the second instance of the alarm comprises an auditory alarm.

A wearable ambulatory external defibrillator system comprising:

• a garment configured to be worn by a patient, the garment comprising a plurality of electrocardiogram (ECG) sensing electrodes sewn into the garment, the plurality of sensing electrodes configured to obtain at least one ECG signal from the patient;
• a plurality of therapy delivery electrodes configured to deliver a therapy to the patient;
• a wearable medical device controller comprising at least one processor configured to be coupled to the plurality of ECG sensing electrodes and the plurality of therapy delivery electrodes, the at least one processor further configured to
• issue a first instance of an alarm in response to an indication of a cardiac abnormality in the patient,
• determine that no response to the first instance of the alarm was received within a target response time,
• adapt at least one characteristic of the alarm responsive to determining that no response was received to the first instance of the alarm within the target response time, and
• issue a second instance of the alarm having the at least one adapted characteristic;
• wherein the wearable ambulatory external defibrillator system is configured to issue at least one of a vibration alarm followed by a voice instruction, a tone followed by a voice command, a visual alarm followed by an auditory alarm, or a first auditory alarm at a first volume followed by a second auditory alarm at a second, increased volume.

A wearable ambulatory external defibrillator system comprising:

• a garment configured to be worn by a patient;
• a plurality of electrocardiogram (ECG) sensing electrodes integrated into the garment, the plurality of ECG sensing electrodes configured to obtain at least one ECG signal from the patient;
• at least one driven ground electrode disposed in a same plane as the plurality of ECG sensing electrodes;
• a plurality of therapy delivery electrodes configured to deliver a therapy to the patient;
• and
• a wearable medical device controller comprising at least one processor configured to be coupled to the plurality of ECG sensing electrodes, the plurality of therapy delivery electrodes, and the at least one driven ground electrode, the at least one processor further configured to
• issue a first instance of an alarm in response to at least one of an indication of a cardiac abnormality in the patient or an event concerning one or more components of the wearable ambulatory external defibrillator system, wherein the first instance of the alarm comprises a vibration alarm,
• determine that no response to the first instance of the alarm was received within a target response time,
• adapt at least one characteristic of the alarm responsive to determining that no response was received to the first instance of the alarm within the target response time, and
• issue a second instance of the alarm having the at least one adapted characteristic, wherein the second instance of the alarm comprises a voice instruction.