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Chain of Survival
Four Vital Links For Use of AEDs When SCA Strikes
Each year,
more than
950,000 adult Americans die from cardiovascular disease, making it the
number one cause of death in the U.S. At least 250,000 of those deaths
are due to sudden cardiac arrest (SCA).
SCA strikes people of all ages and all degrees of
fitness, and usually without warning. According to the American Heart
Association, many of these lives can be saved if bystanders quickly
phone 911 and begin CPR, and if trained responders provide
defibrillation within minutes.
By choosing to implement an AED (automated external
defibrillator) program at your facility or site, you have made the
commitment to saving lives and to improving the Chain of Survival in
your workplace community. Most often, SCA is caused by an abnormal heart
rhythm called ventricular fibrillation (VF) that prevents the heart
from pumping
blood. The treatment for VF is defibrillation, the delivery of an
electric shock to the heart that stops VF and allows a normal heart
rhythm to resume.
Providing defibrillation on-site with an AED increases
survival rates for VF cardiac arrest. In places where AED programs
provide immediate CPR and deliver the first shock within three minutes
after collapse,
reported survival rates from VF cardiac arrest are as high as 74
percent. Currently only about 5 percent of all sudden cardiac arrest
victims survive in places where no AED programs have been established to
provide prompt CPR and defibrillation.
Chain of Survival
More people can survive SCA if
bystanders act quickly to start the Chain of Survival. The Chain of
Survival consists of the actions needed to treat a life-threatening
emergency. The adult Chain of Survival has 4 vital links:
1. Early Access—Recognizing that an
emergency exists and quickly phoning EMS (emergency medical services).
In most communities, 911 is the EMS number.
2. Early CPR—Starting CPR immediately
after cardiac arrest. CPR circulates gen-rich blood to the brain and
heart. It buys time for the victim until defibrillation can be
performed.
3. Early
Defibrillation—Defibrillating the victim as soon as the AED arrives.
This is most effective within three to five minutes.
4. Early Advanced Care—Trained
healthcare providers arriving quickly to give advanced care.
Choosing and Placing AEDs
Several AEDs on the market are
suitable for workplace and community AED programs. The American Heart
Association does not recommend one device over another. Selection of an
AED will be influenced by the needs of the program site.
You can find a current list of FDA
cleared AEDs at
www.americanheart.org/cpr. Click on Corporate Training, AED
programs, FDA Cleared AEDs.
Effective AED programs are designed
to deliver a shock to a victim within three to five minutes of collapse.
When deciding where to place AEDs, use a three-minute response time as a
guideline to help you determine how many AEDs you need and where to
place them.
Companies should determine if there
are places on-site where the incidence of sudden cardiac arrest may be
higher, such as corporate health clubs, or that are hard to reach
quickly. Also consider areas where many people gather, such as
cafeterias.
Should the AED be secured or
unsecured?
A secured AED is one that is locked
in an office, a wall-mounted cabinet, or other enclosed space. An
unsecured device typically is placed in a public area and is not locked.
Will the AED have a notification
system?
Automatic Notification System: This
type of system automatically notifies trained responders when the AED is
removed or its cabinet is opened. This notification may be sent directly
to local EMS or to an in-house security system that will then notify
EMS.
Audiovisual Alarm: This type of alarm
activates lights or an audio alarm when the AED is removed or its
cabinet is opened.
Maintaining Your AED
Conduct scheduled and preventive
maintenance checks according to the manufacturer’s recommendations. The
program coordinator or another designated person can do the maintenance
checks. This person develops a written checklist to assess the readiness
of AEDs and their supplies. This checklist supplements regularly
scheduled, more detailed maintenance checks recommended by the
manufacturer. At a minimum, the checklist should include the following:
• Verify placement of AEDs (are they
where they are supposed to be?);
• Verify battery installation and
expiration;
• Check the status/service indicator
light;
• Inspect exterior components and
sockets for cracks or other damage;
• Check supplies (razor, towel,
barrier device, scissors, extra battery, disposable gloves, and an extra
set of electrode pads).
Putting AEDs Back Into Service
After a cardiac arrest occurs, it is
critical to get the AED back into service as soon as possible. The
written procedure for maintaining the AED should contain a section on
this process. Here is a list of activities that should be included:
• Check and replenish supplies as
appropriate (includes electrode pads, towel, razor, barrier device, and
disposable gloves). Make sure that someone is designated to order and
replenish supplies and does so;
• Clean and disinfect the device;
• Check the battery and replace it if
needed;
• Check the device and housing for
cracks or other damage;
• Return the AED to its designated
place with appropriate supplies.
Identifying Responders
The American Heart Association
recommends that as many trained responders as possible have access to
defibrillators.
When identifying responders, consider
people who typically are on the premises and already respond to
emergencies as part of their jobs. Security guards and members of safety
response teams are excellent candidates for becoming trained responders.
Once you identify appropriate
responders, make sure to obtain approval from their department heads. If
these department heads are not already identified as decision makers,
begin including them in program updates. This is important. Also make
sure that there are appropriate budget allocations for proper training.
To determine how to train your
responders, review your state and local requirements for AED programs.
These requirements will outline acceptable curriculums, training
organizations, and renewal intervals. From there you can plot your
training program schedule. Initial training should teach responders:
• How to recognize the warning signs
of a heart attack;
• How to respond to an emergency;
• Why and how to activate local EMS;
• How to buy time for the victim by
performing one-rescuer CPR until the AED arrives;
• How to assess the patient and
determine if you should use an AED;
• How to attach AED pads and ensure
that the device is used properly;
• How to follow safety protocols to
protect the user and bystanders;
• How to deal with unusual situations
(such as a victim with an implanted defibrillator or a victim lying in
water);
• How to use all emergency response
skills in an emergency.
Responders also need to be trained in
the internal Medical Emergency Response Plan (MERP). Typically the
oversight physician or medical professional creates the MERP. The MERP
should include how responders will be notified of an emergency and the
location of the victim, who will call 911, and where the AED is located.
The responders also must be informed
of the policy and procedure for transferring patient care to local EMS
upon their arrival. Conducting skills reviews is critical to ensure that
responders are prepared to perform the necessary skills during an
emergency. Examples of how to review skills include performing mock
drills, scenario practice, and demonstrations of CPR and AED skills.
The goal is to have trained
responders practice activating the emergency response system, getting an
AED to the victim within three to five minutes of collapse, and using
their CPR and AED training.
FSM
Source: The American Heart
Association
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