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Lidocaine, also known as lignocaine and sold under the brand name Xylocaine among others, is a local anesthetic of the amino amide type. [10] It is also used to treat ventricular tachycardia and ventricular fibrillation .
Class Ic antiarrhythmic agents markedly depress the phase 0 depolarization (decreasing V max). They decrease conductivity, but have a minimal effect on the action potential duration. Of the sodium channel blocking antiarrhythmic agents (the class I antiarrhythmic agents), the class Ic agents have the most potent sodium channel blocking effects.
Under continuous exposure to succinylcholine, the initial end plate depolarization is reduced, and repolarisation process is initiated. [14] As a result of the widespread sustained depolarization the synapses ultimately begin repolarization. Once repolarized, the membrane is still less susceptible to additional depolarization (phase II block). [14]
Many local anesthetics fall into two general chemical classes, amino esters (top) and amino amides (bottom). A local anesthetic (LA) is a medication that causes absence of all sensation (including pain) in a specific body part without loss of consciousness, [1] providing local anesthesia, as opposed to a general anesthetic, which eliminates all sensation in the entire body and causes ...
The most common combination of agents used in tumescent anesthesia is lidocaine (0.05-0.10%) and epinephrine (1 ppm). [3] [4] [5] For lidocaine, total doses of 35 mg/kg [6] and 55 mg/kg [7] have been reported as reasonably safe high-end doses, in the context of liposuction.
They include lidocaine, mexiletine and phenytoin. Class Ic greatly slow phase 0 depolarization in the ventricles (however unlike 1a have no effect on the refractory period). Flecainide, moricizine and propafenone are Class Ic agents. [4] Class II agents are beta blockers which inhibit SA and AV node depolarization and slow heart rate.
Nerve block or regional nerve blockade is any deliberate interruption of signals traveling along a nerve, often for the purpose of pain relief. Local anesthetic nerve block (sometimes referred to as simply "nerve block") is a short-term block, usually lasting hours or days, involving the injection of an anesthetic, a corticosteroid, and other agents onto or near a nerve.
A typical action potential begins at the axon hillock [41] with a sufficiently strong depolarization, e.g., a stimulus that increases V m. This depolarization is often caused by the injection of extra sodium cations into the cell; these cations can come from a wide variety of sources, such as chemical synapses, sensory neurons or pacemaker ...
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related to: lidocaine depolarization- 109 S High St #100, Columbus, OH · Directions · (614) 224-4261
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