Hospital Wearable Defibrillator Inpatient Study

A multi-center prospective study of hospitalized patients whom a physician deems at risk of
sudden cardiac arrest during the hospitalization period, wearing the HWD1000 hospital
wearable defibrillator in order to evaluate caregiver and patient interactions with the
device. In addition, ECG signal quality will be reviewed to confirm the HWD1000 safety
profile.

Inclusion Criteria:

Patients whom a physician deems at risk of sudden cardiac arrest during the
hospitalization period (patients will be monitored using the hospital's telemetry system).
Specific inclusion criteria are:

- Hospitalized patients having continuous independent ECG monitoring.

- Patients at risk of sudden cardiac arrest during the hospitalization period as
determined by the investigating physician.

- Patient ≥18 years of age (over the legal age of providing consent).

Exclusion Criteria:

- Patients with an active implantable cardioverter-defibrillator.

- Patients with an active unipolar pacemaker.

- Patients with physical or mental conditions preventing them from interacting with or
wearing the device as determined by the investigating physician.

- Patients having an advanced directive prohibiting resuscitation.

- Patients having bandages or other clinical condition preventing the HWD use.

- Patients unable to consent.

- Patients having recently experienced an arrhythmic storm.

- Patients prone to paroxysmal supraventricular tachycardia.