Key information summary
Efficacy & effects
This medication primarily assists in making various examinations more comfortable through surface anesthesia and lubrication. For example, it reduces urethral pain during cystoscopy or catheter insertion and provides anesthesia effects in the nasal cavity and pharynx during gastroscopy or bronchoscopy. It is also used during rectoscopy and intubation processes to alleviate pain and provide lubrication at the surgical site. In addition, it significantly reduces discomfort caused by cystitis and urethritis pain. This medication is effectively used for pain relief related to various endoscopic examinations and urethral procedures.
Dosage
1. Urethral anesthesia 1) Surface anesthesia of the male urethra: Inject 20 mL (400 mg of lidocaine hydrochloride) of this medication, slowly inserting 10 mL (200 mg of lidocaine hydrochloride) and applying the penile clamp to the corona for several minutes before injecting the remaining medication. In cases where anesthesia is particularly critical, such as in the rectal tube method or cystoscopy, a large amount (for instance, 30-40 mL of this medication) can be administered in 3-4 divided doses.
Precautions
This medication is an amide-type local anesthetic and should not be used by individuals who are hypersensitive to this medication or similar drugs. Use with caution on areas with wounds or infections, and be cautious with individuals who have epilepsy, heart disease, or liver dysfunction. This medication contains an ingredient called propylene glycol, so caution is required if allergic to this substance. Serious reactions such as hypotension, abnormal pulse, and respiratory depression may occur during use, so the patient's condition must be closely monitored, and if any of these symptoms appear, use should be discontinued immediately, and medical personnel should be notified. It can affect the central nervous system, leading to symptoms such as tremors, convulsions, drowsiness, dizziness, nausea, so careful observation is necessary. It can affect heart function, leading to symptoms such as hypotension or reduced heart rate, so caution is required. Allergic reactions may occur, such as skin rashes or swelling; any unusual symptoms should be reported immediately. It is advisable to prepare for emergencies and to have immediate treatment available when using this medication. The dosage should be kept to a minimum, and the patient's condition should be closely monitored during use. For airway anesthesia, rapid absorption occurs, so only a small amount should be used for safety. When used orally, the swallowing mechanism may be hindered, making it difficult for food to pass, so caution is required, especially for children. Caution is necessary as anesthesia of the tongue or oral mucosa poses a risk of biting or injuring. During endotracheal intubation, care should be taken to prevent this medication from entering the intubation tube; otherwise, the tube may become blocked. When used rectally, caution should be exercised to avoid overdose, especially as central nervous system side effects may appear in children.
Side effects
Facial pallor, respiratory depression, shock.