1. Copyright © 2001 American Medical Association. All rights reserved.
From: Improving Survival From Sudden Cardiac ArrestThe Role of the Automated External Defibrillator
JAMA. 2001;285(9): doi: /jama
Figure Legend:
A, Sudden death incidence and total events for various populationpools, showing inverse relationship between risk and total number of events.Note that the horizontal axis for the incidence graph is not linear. B, Comparisonof sudden death rates in a high-risk subgroup of patients with cardiovasculardisease after a major cardiovascular event with a low-risk subgroup of patientswith cardiovascular disease but free of a major event. After 18 months, thecurves become parallel indicating that the presence of a prior major cardiovascularevent as a risk factor for future cardiac arrest becomes limited with time.EF indicates ejection fraction; VT, ventricular tachycardia; VF, ventricularfibrillation; MI, myocardial infarction; and CV, cardiovascular. Reproducedwith permission from Myerburg, et al.
Date of download: 10/27/2017
Copyright © 2001 American Medical Association. All rights reserved.

2. Copyright © 2001 American Medical Association. All rights reserved.
From: Improving Survival From Sudden Cardiac ArrestThe Role of the Automated External Defibrillator
JAMA. 2001;285(9): doi: /jama
Figure Legend:
Rates given for 4 years of consecutive patients (1112) initiallydiscovered in ventricular fibrillation. Response times are known for 942 cases.Both witnessed and unwitnessed cases in this 4-year period are considered.The average (SD) response time for first emergency unit was 3.0 (1.5) minutesand for paramedics was 6.5 (3.2) minutes after dispatch. VF indicates ventricularfibrillation. Reproduced with permission.
Date of download: 10/27/2017
Copyright © 2001 American Medical Association. All rights reserved.

3. Copyright © 2001 American Medical Association. All rights reserved.
From: Improving Survival From Sudden Cardiac ArrestThe Role of the Automated External Defibrillator
JAMA. 2001;285(9): doi: /jama
Figure Legend:
AED indicates automated external defibrillator; ECG, electrocardiogram.
Date of download: 10/27/2017
Copyright © 2001 American Medical Association. All rights reserved.

4. Copyright © 2001 American Medical Association. All rights reserved.
From: Improving Survival From Sudden Cardiac ArrestThe Role of the Automated External Defibrillator
JAMA. 2001;285(9): doi: /jama
Figure Legend:
Ventricular fibrillation is detected (note the horizontal bars measuremaximum amplitude in millivolts), charging begins (from first to third arrow),a shock is advised (second arrow), and a charge delivered (fourth arrow).An organized rhythm is detected and no further shocks advised.
Date of download: 10/27/2017
Copyright © 2001 American Medical Association. All rights reserved.

5. Copyright © 2001 American Medical Association. All rights reserved.
From: Improving Survival From Sudden Cardiac ArrestThe Role of the Automated External Defibrillator
JAMA. 2001;285(9): doi: /jama
Figure Legend:
A, Monophasic truncated exponential (MTE). Current delivery beginsat a peak and declines until the selected energy has been delivered, at whichpoint energy delivery ceases. B, Biphasic truncated exponential (BTE). Aswith MTE, energy delivery begins at a peak. However, direction of currentflow (polarity) reverses at a predetermined point and continues in this directionuntil the selected energy has been delivered or selected duration has beencompleted.
Date of download: 10/27/2017
Copyright © 2001 American Medical Association. All rights reserved.