Book

1. INTERDUCTION TO BIOMEDICAL
Kabul university of medical science
BIOMEDICAL EQUIPMENT COMMUNITY COLLEGE
ASSIGNMENT: Defibrillator ( electric shock)
Arrangement by Suliman khan and Bella khan

2. DEFINITION
A defibrillator is a device that provides an electric shock to your heart to
Allow it to get out of a potentially fatal abnormal heart rhythm, or
arrhythmia, ventricular tachycardia (with no pulse) or ventricular
fibrillation and back to a normal rhythm.

3. HISTORICAL INVENTION
The first modern defibrillator was created in 1947 by Dr. Paul Zoll, who invented this
life-saving device while working as a medical resident at the Massachusetts General
Hospital and Harvard Medical School. In 1968, he went on to found Physio-Control
Corporation with his brother Charles Zoll, which pioneered automated external
defibrillation.

4. Clinical used defibrillator
• You should continue giving CPR while waiting for a defibrillator to be ready to use.
• Before you deliver the shock, make sure no one is touching the person who’s about to receive the shock (or their bed).
• If you’re using an automated external defibrillator (AED), it can review your heart’s rhythm to decide if it needs a shock.
An AED charges itself and provides verbal instructions on how to use it.
• A first responder or healthcare provider will do the following:
• Put two defibrillator paddles or sticky pads (connected to the defibrillator) on your chest. One paddle or pad goes
below your right shoulder and the other below your left nipple. To prevent burns, conducting material is already in the
pads. However, your provider will need to put conducting material on your chest before using paddles.
• For sticky pads, push a button on the machine to give the shock. For handheld paddles, push the button on each
paddle at the same time.

6. • 5 Types of Defibrillators
• The five main types of defibrillators are:
• Automated external defibrillators
• Advanced life support defibrillators
• Implantable cardioverter-defibrillators
• Manual external defibrillators
• Wearable defibrillators

7. Automated External Defibrillators: use electric pulses to treat cardiac arrest during the
first few minutes of arrhythmia. Once strapped on, the electrode pads begin to detect
irregularities. AEDs can identify both ventricular fibrillation and pulseless ventricular
tachycardia. If the machine notices either of these irregular heart rhythms, it
administers a shock to restore the patient’s pulse.

8.  Advanced life support defibrillators: are heavy-duty resuscitating machines
used by medical professionals and paramedics. Older ALS defibrillator models
used paddles, which a technician would press against a patient’s chest to
administer a shock.

9. Implantable cardioverter-defibrillators :are medical
devices surgeons implant in a patient’s body. Doctors
install ICDs beneath a patient’s collarbone. Thin wires
connect to the heart, and the battery-powered device
sends an electric shock to the heart if it detects an
irregular heartbeat. Newer models also function
as pacemakers.

10. Wearable defibrillators (also called WCDs): are defibrillation devices that patients wear
as vests under their clothes. The sensors in the WCD can detect ventricular arrhythmia.
If it does, the WCD administers a shock to treat and restore the wearer’s heartbeat.
WCDs are entirely automatic and do not require bystander or medical professional
involvement to deliver a life-saving shock. Essentially, WCDs are the external and
removable version of an ICD.