6 doctors weighed in:
Why do paramedics use defibrillators with a heart attack patient?
6 doctors weighed in

Dr. Brian Mott
Surgery - Thoracic
2 doctors agree
In brief: Fibrillation
Some patients who suffer a heart attack develop deadly heart rhythms called ventricular tachycardia or fibrillation.
The heart does not contract properly under these conditions and without external defibrillation to shock the heart back into normal the patient would die.

In brief: Fibrillation
Some patients who suffer a heart attack develop deadly heart rhythms called ventricular tachycardia or fibrillation.
The heart does not contract properly under these conditions and without external defibrillation to shock the heart back into normal the patient would die.
Dr. Brian Mott
Dr. Brian Mott
Thank
Dr. Latisha Smith
Wound care
2 doctors agree
In brief: Restore heart rhythm
During a heart attack the heart tissues are starved for oxygen.
When this happens the heart rhythm deteriorates and instead of beating the heart muscle fibrillates- sort of wiggles- instead of contracting as a unit. This is called ventricular fibrillation. Delivering a jolt of electricity to the heart interrupts the wiggles and allows the heart muscle to resume normal contractions.

In brief: Restore heart rhythm
During a heart attack the heart tissues are starved for oxygen.
When this happens the heart rhythm deteriorates and instead of beating the heart muscle fibrillates- sort of wiggles- instead of contracting as a unit. This is called ventricular fibrillation. Delivering a jolt of electricity to the heart interrupts the wiggles and allows the heart muscle to resume normal contractions.
Dr. Latisha Smith
Dr. Latisha Smith
Thank
Get help from a real doctor now
Dr. Vicken Poochikian
Board Certified, Internal Medicine
38 years in practice
2M people helped
Continue
108,000 doctors available
Read more answers from doctors