Trial of Mobile External Defibrillator for Out-of-hospital Cardiac Arrest in Singapore.

Out-of-Hospital Cardiac Arrest Care Through Empowered and Equipped Community First Responders: Mobile External Defibrillation Investigation for Cardiac Arrest in Singapore (MEDICS).

The goal of this clinical trial is to learn the feasibility of equipping the volunteer community responders (VCR) with the mobile external automated defibrillators (mAEDs) for the management of adults experiencing out-of-hospital cardiac arrest (OHCA) patients. It will also provide early signals if this enhanced system can help increase the frequency of defibrillation and doing it earlier. The main questions it aims to answer are:

• Can equipped VCRs apply mAEDs more frequently and earlier to potentially get more patients successfully resuscitated?
• Is this system enhancement is feasible in the long run.

Participants, the VCRs, will:

• Carry a 450 gm mAED with them all the time for up to an year and use it on an OHCA patient if and when alerted to help.
• They will hand over this single-use battery-operated device to the EMS crew for data retrieval and potential replacement
• They will be interviewed for their experience of being equipped and use of the mAED.

1.1. Inclusion Criteria

Study participants must meet all the inclusion criteria to participate in this study:

1. Must be proficient in English. Able to read and understand English fluently.
2. Be aged 21-74 years of age at point of recruitment.
3. Willing and able to move rapidly to a scene that can be 400 meters away from their location.
4. Be a registered CFR with SCDF.
5. Must be active myResponder® mobile phone app user so they can receive alerts about nearby OHCA cases.

1.2. Exclusion Criteria All subjects meeting any of the following exclusion criteria will be excluded from participation in this study.

1. Not proficient in English. Cannot read and understand English.
2. Aged less than 21 and over 74 years of age.
3. Not willing to be a myResponder app user.
4. Not able to move rapidly to a scene that can be 400 meters away from their location.
5. Given the short duration of the trial, those who are pregnant will be ineligible.
6. Those experiencing any serious physical injury or handicap and those with obvious mental handicap.