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8/13/2019 10 Automated External Defibrillation
1/35
10-1
Automated
External
Defibrillation
Lesson 10
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10-2
Introduction
Many patients receiving CPR benefit from anAED
Abnormal heart rhythm can be corrected with
AED shock Use AED with unresponsive, non-breathing, and
pulseless patients
CPR keeps patient viable until AED shock
restores normal heart rhythm
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10-3
AEDs, Medical Direction, and
Laws
Medical director oversees placement/use of AED
Many AED units in homes/other settings
Safe to use by lay rescuers
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Hearts Electrical System
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System keeps contractions of four chambers of
heart synchronized
With heart attack (or other problems), rhythmic
electrical control disrupted
Hearts Electrical System
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10-6
Ventricular Fibrillation (VF)
Most common abnormal heart rhythm
Ventricles of heart are quivering instead of
beating rhythmically
In about of cases of cardiac arrest, victimsheart is in VF
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10-7
How AEDs Work
Automatically checks victims
heart rhythm to detect
fibrillation
Advises whether victimneeds a shock
The shock (defibrillation) may
return heart to a more normal
rhythm
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10-8
Time is Important
AEDs are easy and simple to use but must be used right
away
With every minute that goes by, survival drops by 10%
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10-9
The AED Unit
Contains a battery and is portable
Unit has 2 pads connected to it with cables
Pads are placed on victims chest Unit analyzes victims heart and advises whether
to give a shock
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Using an AED
Whenever patient suddenly collapses or is found
unresponsive consider cardiac arrest
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AED and CPR
Check patients ABCs Use AED if patient is unresponsive, not breathing, and
pulseless
With two rescuers, one gives CPR and one sets up AED
For pulseless patient, use AED as soon as it is readyexcept: For pulseless child not observed to have collapsed
suddenly
For adult found pulseless on arrival and 4-5 minuteshave passed since you were called to respond
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10-12
Be sure patient not in water or incontact with metal
Place AED near patients shoulderand turn it on
Attach pads to patients chest
See diagram on pads
One on right side below collar
bone, the other below and to leftof left nipple
Attach AED to
Patient
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10-13
Attach AED to Patient continued
Attach pads to patient only if patient is unresponsive, not
breathing, and pulseless.
Expose patients chest and dry /shave it if needed
Remove backing from pads and apply firmly on patientschest
If required with AED model, plug pad cables into main
unit
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10-14
Analyze and Shock
Most AEDs automatically analyze patients heart rhythm
Do not move or touch patient while it is analyzing
Unit will advise shock or to continue CPR
Follow units prompts
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10-15
Analyze and Shock
If shock advised:
Be sure no one is touching patient
Administer shock
Immediately give 5 cycles CPR (~2 minutes) AED will analyze and advise again
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10-16
Different AEDs May Use Different
Prompts
Follow units voice and picture prompts
Some units programmed to administer shock
automatically; follow units prompts
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If the Patient Recovers
Put unresponsive, breathing patient in recoveryposition
Continue to monitor breathing
Keep AED pads in place. Some patients returnto VF and require defibrillation again
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If The AED Says No Shock
Patients heart will not benefit from defibrillation
Immediately continue CPR
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Skill: AED
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Position victim away from water and metal.
Place unit by victims shoulder.
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10-21
Expose victims chest.
Dry or shave area as necessary.
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Apply pads to chest.
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Stand clear.
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Follow prompts.
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Stand clear when AED prompts to analyzerhythm again after 5 cycles of CPR (about 2
minutes) Continue until patient moves or EMS arrives and
takes over
If patient recovers, check for breathing
Put breathing unresponsive patient inrecovery position (with pads in place) andcontinue to monitor breathing
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10-26
AED Alerts
Avoid flammable materials, including oxygen
flowing through a mask
Dont use alcohol to wipe patients skin
Dont use AED when in motion
Dont use cell phone or 2-way radio within 6 feet
of AED.
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AED Use in Children
Follow adult guidelines for children > 8 years
Sudden cardiac arrest can occur in younger
children
SIDS Poisoning
Drowning
Heart problems
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AED Use in Children
Give child 2 minutes of CPR before using AED
Unless witnessed that child collapsed suddenly
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AED Use in Children
Use pediatric pads
Smaller
Produce lower-energy shocks
Follow diagram on pads for
placement
Pediatric pads should not be
used on adults
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AED Age Recommendations
AED use recommended for adults and children
ages 1 - 8
AED use for infants is not recommended
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Changing AED Technology
AED technology continues to evolve
Some units use same pads for all patients
Have a separate switch on unit for pediatric
patients
Always follow AED prompts
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Vary AED placement if there is an
internal device
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Remove medication patches
prior to pad placement
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Potential AED Problems
AED must be maintained regularly and have charged
battery
AED may prompt you to avoid problems
With low battery prompt, change battery before continuing
May get prompt to avoid moving victim
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AED Maintenance
AEDs require regular maintenance
Check manufacturers manual
Daily inspection ensures AED ready for use and supplies
are present