TY - CHAP M1 - Book, Section TI - Antidotes A1 - Hughes, Darrel W. A2 - Attridge, Rebecca L. A2 - Miller, Monica L. A2 - Moote, Rebecca A2 - Ryan, Laurajo PY - 2013 T2 - Internal Medicine: A Guide to Clinical Therapeutics AB - Table Graphic Jump LocationTable A-1 AntiodotesView Table||Download (.pdf)Table A-1 AntiodotesIndicationAntidoteDosingConsiderationsAvailabilityAcetaminophenOral N-acetylcysteine (NAC)Loading dose: 140mg/kg diluted in juice or sodaMaintenance dose 70mg/kg Q4h × 17 dosesSolution for inhalation/oral: 10%, 20%; 10, 30mLAcetaminophenIntravenous NACLoading dose: 150mg/kg in 2mL D5W over 1hMaintenance dose 50mg/kg in 500 mL D5W over 4h; then 100mg/kg in 1000mL of D5W over 16h; dosing based on ideal body weight; for pediatric poisonings, use smaller volumes of D5W diluentSolution for injection: 20%; 30mLAlcohols (ethylene glycol, methanol)FomepizoleLoading: 15mg/kg; Maintenance: 10mg/kg Q12h × 4 dosesAdminister as IV infusion over 30min; continue therapy until ethylene glycol or methanol concentrations 500mcg/dL; hypotension requiring crystalloid boluses commonPowder for reconstitution: 500mg; 2gIsoniazid, hydrazinePyridoxine5g IV; do not exceed 0.5g/minDose gram-per-gram with isoniazid up to 5g; repeat doses as need for continued seizure activity; consider benzodiazepine or barbiturates for seizureSolution for injection: 100mg/mL; 1mLLipophilic cardiotoxic agentsIntravenous lipid emulsionBolus 1.5mL/kg IV followed by 0.25mL/kg/minConsider repeat bolus if inadequate response after 1hSolution for injection: 20%; 100, 250, 500, 1000mLMethemoglobinemia (drug-induced)Methylene blue1–2mg/kg IV over 5minRepeat dose if no improvement is observed within 1h; repeat dose every 6h if methemoglobin concentrations are >30%Solution for injection: 10mg/mL; 1, 10mLOpioidNaloxoneAcute overdose: 0.4–2mg slow IV pushChronic overdose: 0.04–0.08mgRepeat doses Q5min until desired response; for chronic overdose, consider starting at lower dose to avoid precipitating withdrawal; repeat dosing maybe required for re-sedation; continuous infusions of two thirds the effective bolus per hour usually maintains adequate respiration & airway protectionSolution for injection: 0.4mg/mL; 1, 10mL, 1mg/mL; 2mLOrganophosphate (muscarinic)Atropine1–3mg IV Q3–5minContinue doubling dose & administer Q3–5min as needed to dry pulmonary secretions; large doses sometimes required (hundreds of mg); atropinization may be required for hours to days; monitor for atropine toxicitySolution for injection: 0.05mg/mL; 5mL, ... SN - PB - The McGraw-Hill Companies CY - New York, NY Y2 - 2024/04/16 UR - accesspharmacy.mhmedical.com/content.aspx?aid=57296003 ER -