Lidocaine hydrochloride is metabolized rapidly by the liver, and metabolites and unchanged drug are excreted by the kidneys. Biotransformation includes oxidative N-dealkylation, ring hydroxylation, cleavage of the amide linkage, and conjugation. N-dealkylation, a major pathway of biotransformation, yields the metabolites monoethylglycinexylidide and glycinexylidide. The pharmacological/toxicological actions of these metabolites are similar to, but less potent than, those of Lidocaine hydrochloride. Approximately 90% of Lidocaine hydrochloride administered is excreted in the form of various metabolites, and less than 10% is excreted unchanged. The primary metabolite in urine is a conjugate of 4-hydroxy-2,6-dimethylaniline.
Lidocaine Hcl Description: 1.Lidocaine hcl is a local anesthetic and antiarrhythmic drug. It is clinically used for infiltration anesthesia, epidural anesthesia, surface anesthesia (including in the thoracoscopy or abdominal surgery for mucosal anesthesia) and nerve conduction block.
2.Lidocaine hcl is an amide local anesthetic. With the dose increased, the role or toxicity increased, there is an anti-convulsive effect with sub-poisoning plasma concentration; Blood concentration of more than 5μg • ml-1 can occur convulsions.
3.Lidocaine hcl in low doses can promote outflow of K+ in cardiomyocytes, reduce myocardial autonomy, and has antiarrhythmic effects. Increased plasma concentration may cause slowing of heart conduction, atrioventricular block, inhibition of myocardial contractility and decreased cardiac output. Usage of Lidocaine Hcl :
This medication is used on the skin to stop itching and pain from certain skin conditions (e.g., scrapes, minor burns, eczema, insect bites) and to treat minor discomfort and itching caused by hemorrhoids and certain other problems of the genital/anal area (e.g., anal fissures, itching around the vagina/rectum).
Some forms of this medication are also used to decrease discomfort or pain during certain medical procedures/exams (e.g., sigmoidoscopy, cystoscopy). Lidocaine hcl is a local anesthetic that works by causing temporary numbness/loss of feeling in the skin and mucous membranes. Lidocaine Hcl Applications: Topical lidocaine hcl has been shown in some patients to relieve the pain of postherpetic neuralgia (a complication of shingles), though there is not enough study evidence to recommend it as a first-line treatment. IV lidocaine also has uses as a temporary fix for tinnitus. Although not completely curing the disorder, it has been shown to reduce the effects by around two thirds.
Lidocaine hcl injection administered intravenously or intramuscularly, is specifically indicated in the acute management of ventricular arrhythmias such as those occurring in relation to acute myocardial infarction, or during cardiac manipulation, such as cardiac surgery.