Comparative Pharmacology
Head-to-head clinical analysis: DURANEST versus LIDOCAINE HYDROCHLORIDE 5 AND DEXTROSE 7 5.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DURANEST versus LIDOCAINE HYDROCHLORIDE 5 AND DEXTROSE 7 5.
DURANEST vs LIDOCAINE HYDROCHLORIDE 5% AND DEXTROSE 7.5%
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Etonidate is an ultrashort-acting nonbarbiturate hypnotic agent that produces anesthesia by enhancing GABA-mediated chloride conductance at GABA-A receptors, leading to central nervous system depression.
Lidocaine stabilizes the neuronal membrane by inhibiting sodium ion influx, thereby blocking the initiation and conduction of nerve impulses. Dextrose provides caloric support.
2-10 mL of a 1-2% solution, subarachnoid injection, single dose only.
For IV administration, typical adult dose is 5-7 mg/kg intravenously as a single bolus, followed by 0.5-1 mg/kg every 5-10 minutes as needed, up to a maximum total dose of 200-300 mg. For epidural or caudal anesthesia, 15-20 mL of the 5% solution provides adequate block. For peripheral nerve block, 10-30 mL. Do not exceed 5 mg/kg per dose intravenously or 300 mg per dose by infiltration.
None Documented
None Documented
Terminal elimination half-life is 4.5 hours (range 3-6 hours). Clinical context: Prolonged in severe hepatic impairment but not significantly in renal impairment.
Terminal elimination half-life is approximately 1.5 to 2 hours in healthy adults after intravenous administration. In patients with heart failure or hepatic impairment, half-life may be prolonged to 4-6 hours or more. After epidural administration, half-life may be slightly longer due to ongoing absorption.
Primarily hepatic metabolism; renal excretion of metabolites accounts for <10% unchanged drug. Biliary/fecal elimination is minimal.
Renal excretion of unchanged lidocaine and metabolites; less than 10% excreted unchanged in urine. Hepatic metabolism produces active metabolites (MEGX, GX) which are renally excreted. Biliary/fecal excretion negligible.
Category C
Category A/B
Local Anesthetic
Local Anesthetic / Antiarrhythmic (Class Ib)