If there is no electrical activity at all - then chances of restoring that (with chest compressions, ventillation, drugs) is very slim. Usually just the electrical defibrillation is all that is needed and when a patient is "coded" you only use the defibrillator if they have a "shockable rhythm". Drugs can't "restart the heart" but can sometimes help with the defribrillation (though not very well). Heart only pauses for a second or two before spontaneously beating again- hopefully in a coordinated fashion. As you say when the cardiac muscle is "out of sync" aka fibrillating - a defibrillator brings them back in sync. The heart rate is normally set by a group of cells with the fastest intrinsic rhythm and depolarization/contraction of the rest of the cardiac muscle is coordinated through a conduction system. Cardiac muscle cells have an "intrinsic rhythm". It brings the cardiac muscle cells back "in sync" by depolarizing (Na+ ions moving into the cells) all of them simultaneously. But you'd still need the right timing.Īlmost right.
#I HAVE A SEAGATE SLIM AND TRYING TO USE TIME MACHINE ON MAC SERIES#
If you by chance have bank of capacitors charged to 1000V with a bout 200 Joule of energy in them you can try discharging them through an inductor in series with the heart. It's like trying to solder chips with a welding machine or cure migraine with a brick. Using mains as a defibrillator will in any case do more harm than good. Also the patient won't jerk when shocked. House, Greys Anatomy or what ever stupid hospital soap you watch. That's the most common misconception in medicine and it pains me, every time I see it on Dr.
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CPR until the ambulance comes is still the best bet. Then it is restarted with drugs or by the natural pacemaker. The defibrillator then causes everything to contract simultaneously to exhaustion, thus stopping the heart. Defibrillators are used when the heart has gone out of sync, that is the different parts of the heart muscle are no longer contracting in the right rhythm relative to each other or are contracting wildly.
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No one will every use a defibrillator on an asystolic heart (flat line ECG). A defibrillator does not magically start hearts when they stopped beating.