Community

Community responders & early intervention

Eligible, qualified nearby people connected to qualifying time-critical medical emergencies.

  • CPR and automated external defibrillator use
  • Opioid overdose, severe bleeding, drowning, heat stroke, diabetic emergency and hypothermia — not cardiac arrest alone
  • Bleeding control and Stop the Bleed
  • Naloxone administration for suspected overdose
  • Severe allergic reaction response
  • First aid and diabetic emergencies
  • Water rescue and flotation support
  • Search-and-rescue support
  • Other recognized areas of training, verified before participation
  • Resource-owner contacts alerted when the resource they hold is pulled onto a call
  • A responder can stand down, or change the areas they answer for, at any time
  • What a responder is told is limited to their verification and the incident category

In an emergency you can't always wait for first responders, and there have been moments where it was too late when help did arrive. But someone could be experiencing an overdose while a nurse carrying naloxone is in the parking lot — and the nurse doesn't know. An off-duty EMT could be standing right beside a choking incident, a marine could be one aisle over from somebody bleeding out while a tourniquet sits in his truck, a coach could be 20 yards from a cardiac arrest with an AED in the equipment bag, a pharmacist could be a block from an overdose, a lifeguard could be watching the water when somebody goes under, and a teacher trained in bleeding control could be in the hallway where somebody has just fallen.

How can they help if they aren't aware? They aren't aware, and the patient is alone for minutes, when help can be just around the corner. If they were only aware, critical help would start immediately, saving minutes and lives. Community response exists to close exactly that gap.

Community Swift Responders (CSRs) are trained, voluntary community members — trained bystanders nearby who can provide lifesaving aid and critical information while professional help is on the way. They are individuals verified as trained and authorized by the participating local agency, city or county, and they do not disrupt emergency scenes: they provide early assistance, share relevant information with arriving professionals, then defer to their direction. The model complements — it does not replace — professional emergency services.

When a call qualifies, the platform can look for nearby people who have asked to be alerted and whose verified training matches what the patient needs. They are alerted only for the kinds of incidents they are qualified and permitted to help with.

Cardiac arrest is the case the model was proven on, and the only one PulsePoint itself was built for, so community alerting is often read as a cardiac-arrest feature. It is not cardiac-only here. The same alert, the same route and the same read-aloud guidance apply to opioid overdose, severe bleeding, drowning, heat stroke, diabetic emergencies and hypothermia, and to strokes, choking and anaphylaxis where what a bystander adds is recognition and speed rather than a procedure. The published figures behind each of those, with the study each one comes from, are set out below.

Alerting is governed by configured rules: a medical proximity radius (0.65 miles in this deployment), the alert locations a person has chosen, their permissions, and who owns or administers the resource involved.

Community response is built around what a resource pull already does on a call. When a dispatcher pulls a resource onto an incident, the people who asked to be told about that resource are alerted with it — the AED a business registered, the naloxone a pharmacy keeps, the bleeding-control kit a school holds — so the person who knows where it is kept is on the way at the same moment as the person sent to fetch it.

What a responder is given is deliberate and bounded: how far away the incident is, what is needed, the route, and the resource they are heading for — and no medical detail beyond what their verification and the incident's category allow them to hold. What they do is recorded on the call as it happens, so the professional crew arrives to a briefing instead of a blank page, and the after-action report is written from what occurred rather than from memory.

Participation is voluntary at every step: a responder chooses the alert locations they will answer for, can change or remove them at any time, and can stand themselves down. Nobody is enrolled by someone else, and an alert is never a summons — it is an invitation that the record shows as alerted, acknowledged, responding and arrived as separate things.

Community response is restricted by incident type and by configured permissions. In this deployment community responders are not alerted to law-enforcement, mental-health or hazardous-material calls. Nobody is asked to work outside their training: the design is for controlled assistance that supports the professional response, never for untrained people to attempt procedures they are not qualified for.

What community responders are
  • Trained bystanders nearby who can provide lifesaving aid and critical information while professional help is on the way
  • Called Community Swift Responders (CSRs): trained, voluntary community members
Who can respond
  • Individuals verified as trained and authorized by the participating local agency, city or county
  • Trained in: CPR/AED · bleeding control · naloxone/Narcan · allergic reactions · diabetic emergencies · first aid · water rescue · SAR support · more
Will they disrupt a scene?
  • No. They provide early assistance, share relevant information with arriving professionals, then defer to their direction
  • The model complements — not replaces — professional emergency services
Not a cardiac-arrest service

Cardiac arrest is the case the community-response model was proven on, and the only one of these that PulsePoint itself covers. Alerting trained people nearby is not limited to it here: the same alert, the same route and the same read-aloud guidance are applied to the other time-critical emergencies below, and the research paper behind this platform carries published figures for each of them.

Published results rapid aid has been reported to change
Cardiac arrest
47.1% vs 27.9%

Survival to discharge when a bystander's AED delivered the first shock, against 27.9% when EMS delivered it. A community first responder reached return of spontaneous circulation in 48% of cases against 23% without, and survival to discharge of 35% against 16%.

CARES 2023 · Derkenne et al., 2020

Opioid overdose
97.3% survived

97.3% survived after naloxone was given by someone in the community. Hypoxic brain injury can set in within three to six minutes, and a bystander was present in nearly 43% of fatal overdoses.

Fischer et al., 2025 · CDC figures cited in the paper

Severe bleeding
52% lower odds of death

A prehospital tourniquet for limb haemorrhage was associated with 52% lower odds of death, and 83.6% survival to hospital against 75.1% without one. Severe bleeding can become fatal in the minutes before an ambulance arrives.

Ko et al., 2024 · Hashmi et al., 2023

Drowning
3× greater odds

Bystander CPR after a drowning was associated with three times greater odds of a favourable neurological outcome. Roughly 4,000 people die and 8,000 more are injured in water each year in the United States.

Tobin et al., 2017 · paper's drowning figures

Heat stroke
0% vs 4.41% mortality

No deaths where cooling was rapid, against 4.41% where it was insufficient. 119,605 heat-related emergency department visits were recorded in 2023 and 2,391 heat-related deaths in 2024.

Filep et al., 2020 · CDC 2023, 2024

Diabetic emergency
95.7% resolved in 30 min

66 of 69 hypoglycaemic events resolved within thirty minutes after nasal glucagon was given by a caregiver. Roughly 192,000 hypoglycaemia visits reach US emergency departments each year.

Seaquist et al., 2018

Environmental hypothermia
53% survival

53% survival in urban hypothermic cardiac arrest, where the interventions are insulation, careful handling and getting the casualty to the right care. 1,024 hypothermia deaths were recorded in 2023.

Rischall et al., 2025

Also covered — where the paper gives the size of the problem, not a result
Stroke
166,852 deaths (2024) · ~795,000 strokes a year

The paper reports no reversal a bystander performs here, because there is not one: the intervention is recognition and speed. What a bystander adds is a call made sooner and a faster on-scene picture for the crew.

Choking
12,435 children a year treated in US emergency departments

Airway obstruction becomes brain injury or death quickly, and the paper reports 160 deaths among children under 14 in the year it tabulates. A mapped choking-response device and a read-aloud guide are the contribution.

Anaphylaxis & severe asthma
~1.4 million asthma emergency department visits (2022)

6.7% of US adults have a diagnosed food allergy. Epinephrine and a rescue inhaler are the interventions, and the paper's point is access: a caller who cannot find either is the case the resource map exists for.

Every figure above is as the project's research paper states it, with the source the paper names. They are published results from other systems and studies — different places, different periods — and are not measurements of this platform. Community responders are still not alerted for law-enforcement, mental-health or hazardous-material calls: what a responder may be alerted for follows their verified training and the community's own rules.

The detail behind it

6 sectionsOpen any one to read it.

A Community Swift Responder is a trained, voluntary member of the community whose qualifications have been verified by the participating agency, city or county — not a person who has simply installed the app.

  • Applies, and submits proof of certification for each area of training
  • Stays inside their field of training unless further certification is verified
  • Chooses the alert locations they will answer for, and can change or remove them at any time
  • Can stand themselves down, and is never enrolled by somebody else
  • Provides early assistance inside their training, hands over to professionals, and then defers to their direction

Everything here describes the platform as built, subject to the configuration decisions of the community or agency using it.

Support this work

Free for the people who need it, anywhere it runs.

It is not tied to one town or one county: a department, agency or community anywhere in the country or the world can run it. Residents are never charged. Departments pay for the parts they use, and donations let us put more resources into a community that could not otherwise afford them.

  • · Defibrillators, naloxone and bleeding-control kits
  • · Guides, voice instructions and training material
  • · Mapping the equipment a community already has
Get in touch

Questions, corrections, or a resource we have missed — reach the team directly.