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Topic: Defibrillation

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	Defibrillation
		Defibrillation is a process in which an electronic device gives an electric shock to the heart.
		All emergency personnel should be trained and allowed to use a properly maintained defibrillator if they're likely to respond to cardiac arrest victims.
		To make early defibrillation possible, a defibrillator must be immediately available to emergency personnel responding to a cardiac arrest.
	www.americanheart.org /presenter.jhtml?identifier=4540 (282 words)

	Defibrillation - Wikipedia, the free encyclopedia
		Defibrillation is a medical technique used to counter the onset of ventricular fibrillation, (VF) a common cause of cardiac arrest, and pulseless ventricular tachycardia, which sometimes precedes ventricular fibrillation but can be just as dangerous on its own.
		Defibrillation is a technique used in emergency medicine to terminate ventricular fibrillation or pulseless ventricular tachycardia.
		The purpose of defibrillation of ventricular arrhythmias is to apply a controlled electrical shock to the heart, which leads to depolarization of the entire electrical conduction system of the heart.
	en.wikipedia.org /wiki/Defibrillation (1042 words)

	Defibrillation \| AHealthyMe.com
		Defibrillation is a process in which an electronic device sends an electric shock to the heart to stop an extremely rapid, irregular heartbeat, and restore the normal heart rhythm.
		Defibrillation should not be performed on a patient who has a pulse or is alert, as this could cause a lethal heart rhythm disturbance or cardiac arrest.
		Defibrillators deliver a brief electric shock to the heart, which enables the heart's natural pacemaker to regain control and establish a normal heart rhythm.
	www.ahealthyme.com /topic/topic100586703 (705 words)

	ICU-USA - Tour - Defibrillation
		Defibrillation is the sending of a powerful electric shock through the heart.
		Defibrillation is accomplished with a device called a defibrillator.
		The defibrillator generates the electrical shock that is passed to the patient through the paddles or pads.
	www.icu-usa.com /tour/procedures/defib.htm (412 words)

	NGC - NGC Summary
		After arrival of defibrillator: The patient should be evaluated immediately for the presence of ventricular fibrillation or ventricular tachycardia by the operator (conventional) or the defibrillator (automated or semi-automated).
		Automatic defibrillators, when attached to patient, analyze rhythm and deliver countershock when appropriate without intervention by operator; semiautomatic defibrillators require pressing a button to initiate rhythm analysis and advise operator when delivery of counter-shock (by pressing a button) is appropriate.
		Defibrillators should be checked and documented each shift for presence, condition, and function of cables and paddles; presence of defibrillating and monitoring electrodes, paper, and spare batteries (as applicable); and charging, message/light indicators, monitors, and ECG recorder (as applicable).
	www.guideline.gov /summary/summary.aspx?doc_id=6512 (2776 words)

	Defibrillation
		Proper electrode placement ensures that the axis of the heart is directly situated between the sources of current (defibrillator paddles).
		Defibrillation s achieved by passing an electric current through cardiac muscle mass to restore a single source of impulse generation.
		Charge defibrillator to prescribed voltage; a significantly lower (15-30 joules) energy level is used.
	rnbob.tripod.com /defib.htm (878 words)

	eMedicine - Automatic External Defibrillation : Article by Joseph Bocka, MD (Site not responding. Last check: 2007-11-06)
		Development of practical defibrillators began in the 1920s with funding from Consolidated Edison of New York in response to an increasing number of electric shock accidents and deaths.
		Defibrillation by emergency medical technicians (EMTs) without the presence of physicians was first performed in Portland, Oregon, in 1969 and was reported in 1972.
		Biphasic defibrillation delivers a charge in one direction for half of the shock and in the electrically opposite direction for the second half.
	www.emedicine.com /emerg/topic698.htm (3200 words)

	Chain of Survival
		Defibrillation, the delivery of an electrical shock to the heart muscle, can restore normal heart function if it occurs within minutes of SCA onset.
		When CPR and defibrillation are provided within eight minutes of an episode, a person's chance of survival increases to 20%.
		According to the American Heart Association (AHA), in cities where defibrillation is provided within 5-7 minutes, the survival rate from SCA is as high as 49%.
	www.chainofsurvival.com /cos/Early_Defibrillation_detail.asp (251 words)

	Defibrillation: When minutes make a difference (Site not responding. Last check: 2007-11-06)
		Defibrillator paddles or disposable defibrillator electrodes (DDE) are positioned on the chest wall so that the axis of the heart lies between them.
		Initial defibrillation for VF continues until a pulse is established, the rhythm converts to a normal rhythm or one in which defibrillation isn’t indicated, or the three AHA recommended shocks have been delivered.
		In this case, rhythm recognition, the decision to defibrillate, and charging and discharging the defibrillator are dependent on human judgment.
	www.nurses.com /content/news/article.asp?docid={8a393415-d01e-11d4-8c87-009027de0829}&VNETCOOKIE=NO (1606 words)

	Defibrillation
		Defibrillation is the most effective treatment for ventricular fibrillation.
		Note: When using the Zoll transcutaneous pacemaker to defibrillate, paddles are not needed as the charge is delivered through the pads.
		Defibrillation is the random application of energy; the machine does not need to read the ECG to apply defibrillation energy.
	www.lhsc.on.ca /critcare/icu/procedures/defibrlt.htm (797 words)

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