Comparative Pharmacology
Head-to-head clinical analysis: CHIROCAINE versus LIDOCAINE HYDROCHLORIDE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CHIROCAINE versus LIDOCAINE HYDROCHLORIDE.
CHIROCAINE vs LIDOCAINE HYDROCHLORIDE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Chirocaine (levobupivacaine) is a long-acting local anesthetic of the amide type. It blocks sodium channels, inhibiting nerve impulse initiation and conduction, thereby producing local anesthesia.
Lidocaine hydrochloride is a sodium channel blocker that inhibits voltage-gated sodium channels in neuronal and cardiac cell membranes, stabilizing the membrane and preventing depolarization, thereby blocking nerve impulses and exerting local anesthetic and antiarrhythmic effects.
0.5% to 0.75% solution; epidural: 10-20 mL of 0.5% solution (50-100 mg) as initial dose; for surgical anesthesia, 15-20 mL of 0.75% solution (112.5-150 mg); repeat doses of 0.25% to 0.5% solution at 40-60 minute intervals as needed. Maximum single dose: 225 mg.
IV: 1-1.5 mg/kg bolus, then 1-4 mg/min continuous infusion. Max: 3 mg/kg (300 mg) loading dose. For ventricular arrhythmias.
None Documented
None Documented
Terminal elimination half-life is 0.5–1.5 hours (adults) and 1–2 hours (neonates). Clinically, this short half-life limits accumulation with repeated doses.
Terminal elimination half-life is 1.5–2 hours in adults. In patients with heart failure, hepatic cirrhosis, or those on CYP-inhibitors, half-life may be prolonged to ≥3 hours; in neonates, up to 3–6 hours.
Renal excretion accounts for approximately 95% of the dose, with most being eliminated as metabolites (mainly p-aminobenzoic acid and other conjugates) and less than 5% as unchanged drug. Biliary/fecal excretion is minimal (<5%).
Primarily hepatic metabolism (90% CYP3A4, also CYP1A2) to inactive metabolites (monoethylglycinexylidide, glycinexylidide); <10% excreted unchanged in urine. Renal elimination accounts for the majority of metabolite clearance.
Category C
Category A/B
Local Anesthetic
Local Anesthetic / Antiarrhythmic (Class Ib)