External cardiac monitoring system

A computing device configured to sense an electrocardiogram (ECG) signal from a patient, the computing device comprising:

• sensing circuitry comprising one or more sense amplifiers;
• processing circuitry configured to:
• sense, via the sensing circuitry, a signal from one or more sensors on a wearable component in contact with skin of the patient;
• determine a noise signal within the sensed signal;
• determine whether the noise signal satisfies a threshold condition;
• determine, based on a determination that the noise signal satisfies the threshold condition, that the patient is improperly wearing the wearable component;
• and
• based on a determination that the patient is improperly wearing the wearable component, cause the sensing circuitry to suspend sensing the ECG signal;
• and
• a fixation mechanism configured to electrically connect the computing device the one or more sensors.

A method comprising:

• sensing, by sensing circuitry of a computing module and via a plurality of electrically active regions disposed on a wearable component worn by a patient and configured to contact skin of the patient, an electrocardiogram (ECG) signal of a heart of the patient, wherein the wearable component is configured to encircle a portion of a torso of the patient, and wherein the wearable component comprises:
• an electrically conductive fabric defining the plurality of electrically active regions along a longitudinal axis of the wearable component;
• and
• a recess configured to retain the computing module;
• determining, by processing circuitry of the computing module and based on the ECG signal, a noise signal within the ECG signal;
• determining, by the processing circuitry, whether the noise signal satisfies a threshold condition;
• determining, by the processing circuitry and based on a determination that the noise signal satisfies the threshold condition, that the patient is improperly wearing the wearable component;
• and
• based on a determination that the patient is improperly wearing the wearable component, causing, by the processing circuitry, the sensing circuitry to suspend sensing the ECG signal.