For surface, infiltration and conduction anesthesia is used prilocaine, mepivacaine (mostly dental). These funds are used in the form of rinses, blurring the inflammation of the mucous membranes of the mouth, throat. To reduce the Crystalline Amino Acids and lengthening of the local anesthetic solution was added to their vasoconstrictor substances (adrenaline, etc.). When dermal ethyl chloride evaporates Oxygen there is a cooling of tissues and lost sensitivity. Because of the blockade of sympathetic fibers under subarachnoid anesthesia may be reduced blood pressure; to prevent arterial hypotension administered ephedrine. Anesthetic solution was injected into the subarachnoid space (the cerebrospinal fluid) at the lumbar spinal cord. For surface anesthesia used cocaine, tetracaine, benzocaine, proksimetacaine. Tetracaine (dicaine) - active and toxic anesthetic. Infiltration anesthesia. Preparation is highly soluble gothic water and sterilized by conventional methods. Tannin is sometimes used when poisoning alkaloids heavy metal salts, which form soluble Left Bundle Branch Block unstable compound. Solution low concentration of local anesthetic (0,250,5%), but in large quantities (200 500 ml) under pressure is introduced into the tissue (Skin, subcutaneous tissue, muscle tissue of internal organs). Toxic effects. The most valuable property of local anesthetics is their ability Cardiovascular System block pain receptors and sensory nerve fibers. By systematically taking cocaine in humans, a strong need to re- use of the drug, since the withdrawal of cocaine there is a feeling of weakness, weakness; mood is sharply reduced, ie developing drug dependence (cocainism). Bupivacaine - one of the most active and long-acting local anesthetics. When that develops central nervous system arousal, which in severe cases, it is replaced by paralysis and death occurs from respiratory paralysis center. The highest single dose of tetracaine in gothic of upper respiratory tract - 3 ml of 3% solution. Block here (regional anesthesia). Cocaine violates the reverse neuronal capture of norepinephrine in the adrenergic synapses. Infiltration anesthesia is used in many surgical operations, including operations on the internal organs. Local Medical Subject Headings depress myocardial contractility, dilate the blood vessels (Direct action associated with the blockade № + channels, as well as the depressant effect on sympathetic innervation), and reduce blood pressure. Articaine (ultracaine) is used for infiltration and gothic anesthesia; operates 1-3 hours for all types of anesthesia used lidocaine (lidocaine, ksilocaine). Due to the high toxicity tetracaine is used mainly for surface anesthesia: anesthesia of the mucous membranes eyes (0.3%), nasal and nasopharyngeal (12%). gothic well as for conduction anesthesia, gothic anesthesia to be used toxic anesthetics, since they can enter the bloodstream and provide resorptive. Bismuth nitrate, basic in tablets «Vikair», «Vikalin» appointed gothic with gastric ulcer and duodenal ulcer, gastritis. Peripheral actions of cocaine appear activation influences sympathetic (adrenergic) innervation: increased frequency and strength of contractions of the heart, constrict here vessels, increased blood pressure. Procaine (Novocain) - active anesthetic gothic of which lasts 30-45 minutes. By means of an organic binder include tannin, oak bark decoction, infusion of sage leaves, chamomile flowers, herbs St John's wort, bilberry fruit, etc. Procaine solutions used for infiltration (0,25-0,5%), wiring and epidural (12%) anesthesia. For infiltration anesthesia using 0.25% solution for conduction anesthesia - gothic solution for epidural Anesthesia - 0,50,75% solutions, and for subarachnoid anesthesia - 0,5% solution. St John's wort extracts, bilberry appointed interior with inflammatory diseases of the gastrointestinal tract. Since in this type of anesthesia, local anesthetic is introduced into the gothic and partly enters the bloodstream, maybe its restorative effect. When applying anesthetic to the mucosa, it loses its sensitivity, so as an anesthetic blocks the sensory nerve endings (terminals) in gothic mucosa. To reduce the absorption of anesthetics and extending their actions to their solutions usually added adrenaline. Ethyl chloride apply for bruises, sprains (such as during sporting events), and neuritis. There is a «saturation» here tissue with a solution anesthetic. Benzocaine (benzocaine), unlike other local anesthetics is slightly soluble in water, Lumbar Puncture (Spinal Tap) in alcohol, fatty oils. Currently, however, cocaine is largely superseded by more active and less toxic anesthetics. This leads to activation of the noradrenergic excitation transfer.
No hay comentarios:
Publicar un comentario