hrxxx -> RE: Tens unit placement on females (7/3/2013 12:13:58 AM)
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ORIGINAL: ForgetToRemember I'm no expert, but here is a link that might be useful: Engineering.dartmouth Basically it is saying that Amps matter more than voltage. The ways you can die from electricity are (to my knowledge): Your heart's AV node is disrupted, causing ventricular fibrillation (uncoordinated pumping of the left and right ventricles, making them 'quiver' instead of pump blood in a concerted effort). The heart will pump on it's own as long as its tissue is alive and has the proper nutrients, however the AV node decides how fast the heart beats and makes them beat together (technically your nerves decide how fast it should beat). The AV node slows down the current from the SA node and sends it along the purkinje fibers which contract the ventricles. Cause of death is Cardiogenic Shock. Life can be significantly prolonged with CPR, and v fib can be reset with a defibrillator (sometimes called an AED - Automated External Defibrilator). You can sometimes find AEDs in cases in large buildings or schools along the wall, and of course ambulances and fire trucks carry them. Disruption to the phrenic nerve which innervates the Diaphragm. The diaphragm is a muscle in just below the lungs in the middle of your chest cavity that expands (contracts) or recedes (relaxes). This changes the pressure between the outside world and your lungs, allowing air to enter due to the difference in pressure. When the diaphragm is contracted it creates a positive pressure difference inside the lungs do to more volume area and forces air inside. When relaxed, the diaphram forces air out do to negative pressure inside the lungs compared to the outside world (less volume area). The Phrenic nerve starts around C-3 to C-5 (C stands for Cervical spine - your neck has 7 cervical vertebrae). It is about in the middle of your neck, slightly above the midpoint really. Generally speaking it is very difficult to interfere with your spinal cord due to it's great protection with muscle, vertebrae, collagen, and tough Meninges (dura mater, pia mater and arachnoid mater). However, I wouldn't know for sure how far an electrical current could penetrate the spinal cord. Cause of death is Respiratory Shock (not enough Oxygen due to a respiratory system failure). CPR can be used to prolong life as well in Respiratory Shock (since Cardiogenic Shock usually follows suit). The best treatment is positive pressure air such as a bag-valve mask or even just breathing for the person. Either way, you should take from this that CPR is very valuable in saving lives and do not risk using electricity with any decent amperage above the stomach (definitely not chest or neck / spinal column). I'm sure you could die from other kinds of nerve damage as well, such as the Vagus nerve which innervates most of your organs, but I would think that would take far to long and would right itself before any serious damage could be done. As I said, read the instruction manual that comes with the unit, it can be dangerous if used incorrectly.
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