Defibrillation is a process where an electrical device called a defibrillator sends an electronic shock to the heart to stop an arrhythmia and restore a normal heart rhythm. Defibrillators can be external, transvenous, or implanted depending on the type of device. An automated external defibrillator (AED) is a portable defibrillator designed to be easy to use. It assesses the patient's heart rhythm and determines if a shock is needed. There are different types of defibrillation including alternating current (AC), direct current (DC), and those used in implantable cardioverter defibrillators (ICDs).

1. INTRODUCTION:
Defibrillation is a process which an electrical device called a
defibrillator sends
Electronic shock to the heart to stop an arrhythmia resulting
in the return of
productive heart rhythm.
Defibrillators can be external ,Tran venous or implanted
,depending on the
Type of device used or needed.

2. NEED OF DEFIBRILLATOR:
• The heart is able to perform its important pumping
function only through preciously synchronies action of
heart musul the rapid spreads of action potential over the
surface of atria causes this to chamber of the heart
contract together & pump blood through the atria –
ventricular values into the ventricle.
• After a critical time delay the powerful ventricle muscle
are synchronies activated to the pump blood through the
pulmonary &systematic circulatory system.
• A condition in which this necessary synchronism is lost is
known as fibrillation

3. An automated external defibrillator
(AED) is a self-contained defibrillator device de
signed to be movable easily and simple to use.
An automated external defibrillator contains a battery, a control computer, and
electrodes. When the electrodes are stuck onto the patient, the control computer
assess the patient, checking the rhythm of their heart. It will then charge itself to
appropriate power level and tell users that the person needs to be shocked.

4. • Fibrillation of atrial muscle is called atrial
fibrillation and fibrillation of ventricle
fibrillation.

5. Types to defibrillation
1. Ac defibrillation
2. dc defibrillation
3. automated external defibrillator
4.Implantable cardioverter defibrillator

6. Ac defibrillator
The application of an electrical shock to resynchronize the
heart is sometimes called as counter shock if the patient
does not respond the burst is repeated until defibrillation
occur this method of counter shock is known a ac
defibrillation.
Dc defibrillation
the capacitor is charged to high dc voltages and then
rapidly discharge through electrode across the chest of the
patient called as dc defibrillation

7. Automated external defibrillator
An autotomated external defibrillator (AED)
is a self-contained defibrillator device designed to be
movable easily and simple to use.
An automated external defibrillator contains a battery, a
control computer, and electrodes. When the
electrodes are stuck onto the patient, the control
computer will assess the patient, checking the rhythm
of their heart. It will then charge itself to an
appropriate power level and tell users that the person
needs to be shocked.

9. AED Advantages
• ALS providers do not need to
be on scene.
• Remote, adhesive defibrillator
pads are used.
• Efficient transmission of
electricity

10. Automated External
Defibrillator (AED)
• AEDs come in various
models.
• Some operator
interaction required.
• A specialized computer
recognizes heart
rhythms that require
defibrillation.

11. ICD Revisions
30
26
Interval (years)
25
20
14
15
10
9
10
10
9
10
7
10
10
7
5
0
ICD-1
ICD-2
ICD-3
ICD-4
ICD-5
ICD-6
ICD-7
ICD-8
ICD-9 ICD-10 ICD-11
1900
1909
1919
1929
1938
1948
1955
1965
1975
1989
2015