Lidocaína B. Braun (Lidocaine Hydrochloride)

Lidocaína B. Braun is a local anesthetic used in several procedural contexts.

• Epidural analgesia: provides pain relief during labor or postoperative periods by blocking spinal nerve transmission.
• Infiltration anesthesia for minor surgical procedures: numbs targeted tissue to allow painless incision or excision.
• Intradermal skin testing: creates a temporary, localized numb area for allergy or diagnostic skin tests.
• Local anesthesia for diagnostic or therapeutic procedures: facilitates painless endoscopic, catheter or biopsy interventions.

• Lidocaine acts by reversibly binding to voltage‑gated sodium channels on neuronal membranes, stabilising the inactive state of the channel. This inhibition prevents the rapid influx of sodium ions required for depolarisation, thereby halting the propagation of nerve impulses and producing a localized loss of sensation.

Lidocaína B. Braun may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects

• Injection site pain: mild discomfort at the site of administration.
• Redness or erythema: localized skin flushing.
• Swelling or edema: temporary tissue swelling.
• Itching or pruritus: mild skin irritation.
• Dizziness or light‑headedness: transient sensation of imbalance.
• Nausea: brief feeling of queasiness.

Serious or Rare Side Effects

• Systemic toxicity: CNS symptoms such as seizures, confusion, or tremor.
• Cardiac arrhythmias: abnormal heart rhythms, including bradycardia or ventricular tachycardia.
• Hypotension: sudden drop in blood pressure.
• Allergic reaction: urticaria, angioedema, or anaphylaxis.
• Methemoglobinemia: reduced oxygen‑carrying capacity of blood.
• Persistent numbness: prolonged loss of sensation beyond expected duration.

When using Lidocaína B. Braun, clinicians should observe several safety measures.

• Allergy assessment: verify no known hypersensitivity to amide‑type local anesthetics.
• Dose minimisation: employ the lowest effective concentration for the intended procedure.
• Cardiovascular monitoring: observe heart rate and blood pressure during epidural administration.
• Avoid intravascular injection: aspirate before injecting to prevent systemic exposure.
• Hepatic function: consider reduced clearance in patients with severe liver disease.
• Store at ambient temperature: keep in original container, protect from moisture and direct sunlight.

Lidocaína B. Braun can interact with other medicines, altering its safety profile.

Major Interactions (Avoid)

• Class I antiarrhythmics (e.g., quinidine, procainamide): increase risk of cardiac conduction disturbances.
• Other local anesthetics: additive toxicity leading to CNS or cardiac effects.
• Drugs that lower seizure threshold (e.g., bupropion, tramadol): heighten risk of seizures.

Moderate Interactions (Monitor Closely)

• CYP1A2 or CYP3A4 inhibitors (e.g., cimetidine, erythromycin): may raise lidocaine plasma levels.
• Diuretics (e.g., furosemide): can reduce plasma protein binding, increasing free drug.
• Hepatic enzyme inducers (e.g., rifampin, carbamazepine): may lower lidocaine concentrations, reducing efficacy.