2Public Access Defibrillation CPR and defibrillation improve chance for survival from sudden cardiac death.Defibrillation can be provided by rescuers through the use of automated external defibrillators (AEDs).Public access defibrillation (PAD) laws promote the use of AEDs in public places.Food and Drug Administration (FDA) approved devices for the home.
3How the Heart Works Heart is a muscle. Four chambers store blood. Pacemaker cells send electrical impulses; heart muscle contracts.Normal sinus rhythm
4When Normal Electrical Activity Is Interrupted (1 of 2) Ventricular fibrillation (V-fib)A common abnormal heart rhythm in cases of sudden cardiac arrest in adultsChaotic electrical activity that causes loss of circulationFrom Arrhythmia Recognition: The Art of Interpretation, courtesy of Tomas B. Garcia, MD.
5When Normal Electrical Activity Is Interrupted (2 of 2) Ventricular tachycardia (V-tach)A common abnormal heart rhythm in cases of sudden cardiac arrest in adultsVery rapid electrical activityHeart may be unable to pump blood effectively.From Arrhythmia Recognition: The Art of Interpretation, courtesy of Tomas B. Garcia, MD.
6Care for Cardiac Arrest CPR is the initial care until defibrillator is available.V-fib and V-tach can be corrected with defibrillation, but time is critical.For every minute that defibrillation is delayed, victim’s chance for survival decreases by 7% to 10%.Provide CPR until defibrillator is available.
7About AEDs (1 of 2) Analyzes the heart rhythm Determines and advises need to shockDelivers electrical shock to the victim in cardiac arrestCan reestablish heart rhythm that will generate a pulse
8About AEDs (2 of 2) Common elements On/off button Cable and pads (electrodes)Analysis capabilityDefibrillation capabilityPrompts to guide userBattery operation for portability
9Using an AED (1 of 2) Turn the unit on. Apply AED pads to bare, dry chest.Make sure cable is attached to the AED.
10Using an AED (2 of 2) Stand clear and analyze the heart rhythm. Deliver a shock if indicated.Perform CPR for 2 minutes.Repeat analysis.Repeat shock and CPR as needed.
11Special Considerations (1 of 2) WaterRemove victim from water.Dry victim’s chest.Children/infantsUse pediatric pads if available.Medication patchesRemove patches and wipe skin.
12Special Considerations (2 of 2) Implanted devicesPacemakers and defibrillatorsAvoid placing electrode pads over devices if possible.
13AED Maintenance Preventive maintenance checks are recommended. AED automatically performs periodic self-tests.Check supplies, such as expiration dates on electrode pads and batteries.
14AED ManufacturersDevices and supplies are available from different manufacturers.All devices function similarly.