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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 epinephrine causes vasoconstriction which in turn reduces systemic distribution of the anesthetic as well as prolongs its action in addition to decreasing bleeding at the operating site. Lidocaine 2% with 1:100,000 adrenaline is the local anesthetic of choice in the treatment of pregnant women. [28]
When epinephrine is mixed with local anesthetics, such as bupivacaine or lidocaine, and used for local anesthesia or intrathecal injection, it prolongs the numbing effect and motor block effect of the anesthetic by up to an hour. [45] Epinephrine is frequently combined with local anesthetic and can cause panic attacks. [46]
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.
Articaine is a dental amide-type local anesthetic. It is the most widely used local anesthetic in a number of European countries [2] and is available in many countries. It is the only local anaesthetic to contain a thiophene ring, meaning it can be described as 'thiophenic'; this conveys lipid solubility. [3]
Local anesthetics vary in their pharmacological properties and they are used in various techniques of local anesthesia such as: Topical anesthesia (surface) - Similar to topical gel numbing before getting injected with Lidocaine. Infiltration; Plexus block; Adverse effects depend on the local anesthetic method and site of administration ...
It is sometimes used in combination with epinephrine to prevent systemic absorption and extend the duration of action. The 0.75% (most concentrated) formulation is used in retrobulbar block. [13] It is the most commonly used local anesthetic in epidural anesthesia during labor, as well as in postoperative pain management. [14]
Medical intervention Epidural administration A freshly inserted lumbar epidural catheter. The site has been prepared with tincture of iodine, and the dressing has not yet been applied. Depth markings may be seen along the shaft of the catheter. ICD-9-CM 03.90 MeSH D000767 OPS-301 code 8-910 [edit on Wikidata] Epidural administration (from Ancient Greek ἐπί, "upon" + dura mater) is a method ...