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Chapter 6Automated External Defibrillation
Public Access Defibrillation• A person’s chance of survival dramatically
improves through: – Early cardiopulmonary resuscitation (CPR) – Early defibrillation with the use of an
automated external defibrillator (AED)
Public Access Defibrillation• AED must be used in first few minutes to
be effective.• AEDs are available in many public places.
© Jones & Bartlett Learning. Courtesy of MIEMSS.
How the Heart Works
• An organ with four hollow chambers− Two chambers on the right; two chambers on
the left• Has unique electrical system• Contracts approximately every second
How the Heart Works
© Jones & Bartlett Learning.
Interruption to Normal Electrical Activity
• Ventricular fibrillation (V-fib)− Most common abnormal heart rhythm in
cases of sudden cardiac arrest in adults− The organized wave of electrical impulses is
lost.
From Arrhythmia Recognition: The Art of Interpretation, Courtesy of Tomas B. Garcia, MD.
Interruption to Normal Electrical Activity
• Ventricular tachycardia (V-tach)− Heart beats too fast to pump blood.
From Arrhythmia Recognition: The Art of Interpretation, Courtesy of Tomas B. Garcia, MD.
Care for Cardiac Arrest
• Time is crucial.• CPR is the initial
care.
© Jones & Bartlett Learning.
About AEDs
• Electronic device− Analyzes the heart rhythm.− Delivers an electric shock if necessary.− Corrects one of the abnormal electrical
disturbances.
About AEDs
• Attaches to person’s chest• Built-in rhythm analysis system• Records person’s heart
rhythm, shock data, and other information
© Jones & Bartlett Learning. Courtesy of MIEMSS.
About AEDs
• Common elements− On/off mechanism− Cable and pads − Analysis capability− Defibrillation capability− Prompts− Battery operation for
portability
© Jones & Bartlett Learning.
© Jones & Bartlett Learning.
Using an AED
• Only use if the person is unresponsive and not breathing.
• Power on the AED.
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Using an AED
• Expose the person’s chest.• Apply the pads to the person’s chest.
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Using an AED
• Stand clear.• If advised, press
the shock button.• Perform CPR.• Follow the device
prompts.
© Jones & Bartlett Learning.
© Jones & Bartlett Learning.
Special Considerations
• Water− Remove person
from water.− Dry person’s chest.
• Children− May have special
pediatric pads
© Cardiac Science Corporation.
Special Considerations
• Medication patches− Remove prior to attaching AED.
© Jones & Bartlett Learning. Courtesy of MIEMSS.
Special Considerations
• Implanted devices– Pacemakers– Defibrillators
− Avoid placing electrode pads over devices.
− Allow the unit to stop before using the AED. © American Academy of Orthopaedic Surgeons.
AED Maintenance
• AEDs should be inspected periodically to ensure proper working condition and to ensure that proper supplies are available.
© American Academy of Orthopaedic Surgeons.
AED Supplies
• Supplies− Two sets of electrode pads− Extra battery− Razor− Hand towel− Breathing device− Exam gloves
AED Manufacturers
• AED devices and related supplies are available from different manufacturers.
© Jones & Bartlett Learning. Courtesy of MIEMSS.
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