Antidote
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Administration
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References
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Acetylcysteine
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As per RHC SNAP guideline
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RHCG Paracetamol overdose guidance - 12-hr shortened N-acetylcysteine dosing schedule (SNAP protocol) | NHSGGC
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Activated Charcoal
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Usually 1g/ Kg, toleration is a significant issue as is rises of aspiration, MUST be discussed with ED Consultant prior to being given
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Toxbase entry:
Oral activated charcoal
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Andexanet Alfa
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D/W On-Call Haematology before administering
add 20ml water for injection to vial swirl (do not shake). Final concentration 200mg/20ml. Must be given through an inline 0.2micron filter.
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Atropine
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No dilution needed, give neat
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BNF Atropine sulfate | Drugs | BNFC | NICE
and Toxbase Atropine - antidote
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Calcium Chloride
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Danger of injury if extravasates, ensure as wide-bore cannula as possible and central line ideally
Stocked in Resus
10mmol in 10ml (14.7%) & 10% 10ml pre-filled syringe
Can be given neat
Toxbase advises bolus over 3-5 minutes
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Calcium chloride/calcium gluconate - antidote
Medusa IV guide entry
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Calcium Folinate/ Folinic Acid
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Dosing depending on surface area, see BNFc appendix and toxbase link for dosing.
Bolus over 2 minutes or Infusion over 30mins with a max rate of infusion 150mg/minute.
Can be given neat for injection, infusion dilute to a convenient volume with either Sodium Chloride 0.9% or Glucose 5%.
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Body surface area in children (image) | Medicines guidance | BNFC | NICE
Folinic acid - calcium folinate or disodium folinate - antidote
Medusa IV Guide entry
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Calcium Gluconate
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Dilute with sodium chloride 0.9% or glucose 5%.
IV injection and IV infusion: Dilute each 1mL of calcium gluconate 100mg per
1mL (0.22mmol of calcium in 1mL) with 4mL diluent (final concentration obtained is
0.045mmol in 1mL).
Concentrations greater than 0.045mmol in 1mL should be given via a central venous access device.
IV injection over 5-10 minutes with cardiac monitoring
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NHS GG&C Paediatric Monograph
Calcium Gluconate Monograph
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Calcium Gluconate Gel
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Apply topically or subcutaneously
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Toxbase entry:
Calcium gluconate - antidote
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Cyproheptadine
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Give orally down NG Tube,
tablets can be crushed and mixed with 15-30ml of water for administration, always flush NG tube post dose with 10ml of water
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Newt Guideline: NEWT Guidelines - Admin of Tablets
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Dantrolene
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Reconstitute each 120mg vial with 20ml water for injection. Shake until no particles – do not use if the solution contains particles.
Give over at least one minute. This has a high pH – give centrally If possible if not should be given via a large peripheral vein and monitor site closely.
Dosing via Toxbase table Dantrolene - antidote
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Medusa IV Guide
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Desferrioxamine
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Dilution:
For intravenous or subcutaneous infusion, reconstitute powder with Water for Injection to a concentration of 100 mg/mL; dilute with Glucose 5% or Sodium Chloride 0.9%.
Rate:
give 15 mg/kg body weight/hour intravenously until 80mg/kg has been given and then reassess, if not resolved can continue for a further 4 hours
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BNF directions for administration Desferrioxamine mesilate | Drugs | BNFC | NICE
And Toxbase entry for rate
Desferrioxamine - antidote
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Digoxin specific antibody (Digibind or Digifab)
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Each vial should be reconstituted with 4 mL of sterile water by gentle mixing (Toxbase)
Give as slow IV bolus over 3-5 minutes
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Digoxin Specific Antibody fragments (DigiFab) for poisoning from cardiac glycosides other than pharmaceutical digoxin
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Flumazenil
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No dilution needed
See Toxbase entry for dosing, speed and advised timing of dosing
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Flumazenil - antidote
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Fomepizole
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See toxbase entry and will require discussion with NPIS
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Fomepizole - antidote
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Glucagon
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Can use neat.
See toxbase, only use 5% glucose for dilution if required for infusion
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Glucagon | Drugs | BNFC | NICE
Glucagon - antidote
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Glyceryl Trinitrate
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For continuous intravenous infusion, dilute to max. concentration of 400 micrograms/mL (but concentration of 1 mg/mL has been used via a central venous catheter) with Glucose 5% or Sodium Chloride 0.9%.
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Glyceryl trinitrate | Drugs | BNFC | NICE
Adult GTN Monograph
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Hydroxocobalamin
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Reconstitute with 0.9% Sodium Chloride and give over 15 minutes
Dose of 70mg/kg, 5g max dose
DO NOT give Cyanokit in the same IV line (cannula) as other drugs
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Hydroxocobalamin - antidote
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Idarucizumab
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D/W Haematology Consultant
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Insulin (actrapid)
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When using for high-dose insulin eugylcaemia therapy, use Actrapid neat at 1 unit/ kg
See toxbase for infusion details.
D/W NPIS On-call prior to using
Limited information regarding use in children but all current information suggest using similar doses to adults.
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High Dose Insulin Euglycaemic Therapy - Adults only
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Intralipid 20%
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See toxbase for dosing tables
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Intralipid doses
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Levocarnitine (L-Carnitine)
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Dosing table on Toxbase
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L-carnitine - antidote
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Lorazepam
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From BNFc dilute with an equal volume of Sodium Chloride 0.9% (for neonates, dilute injection solution to a concentration of 100 micrograms/mL). Give into a large vein over 3–5 minutes; max. rate 50 micrograms/kg over 3 minutes.
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Lorazepam | Drugs | BNFC | NICE
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Magnesium
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Dilute to 10% (100 mg magnesium sulfate heptahydrate (0.4 mmol Mg2+) in 1 mL) with Glucose 5% or 10%, Sodium Chloride 0.45% or 0.9% or Glucose and Sodium Chloride combinations
For Torsades de Pointes give as IV bolus over 3-5 minutes
If less emergency indication use protocol for IV Magnesium for acute wheeze Acute wheeze: escalation to intravenous therapy for Acute Wheeze Integrated Care Pathway (ICP) for patients over 2 years old (1128) | Right Decisions
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Magnesium sulfate | Drugs | BNFC | NICE
Optimal administration dosage of magnesium sulfate for torsades de pointes in children with long QT syndrome - PubMed
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Mesna
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Dose as per individual treatment protocol, D/W On-Call Haematology/ Oncology Consultant as required
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Methylthioninium Chloride
(Methylene Blue)
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dosing on toxbase
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Methylthioninium chloride - antidote
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Midazolam
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Give dose over 3 minutes, do not need to dilute
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Midazolam Monograph
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Naloxone
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IV bolus
Can be given neat or diluted to convienient volume with 0.9% NaCL or 5% GLucose, suggest 4-10ml and titrate dose as required
IV Infusion: see monograph
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Naloxone Monograph
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Octreotide
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Dosing from toxbase, (1-1.5mg/kg), dilution from bnf
For intravenous injection or intravenous infusion, manufacturer advises dilute requisite dose to a ratio of at least 1:1 and up to a maximum of 1:9 by volume with Sodium Chloride 0.9% ?need to specify ration
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Octreotide | Drugs | BNFC | NICE
Octreotide - antidote
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Phytomenadione (Vitamin K1)
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Slow IV injection, don’t need to dilute
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Vit K Monograph
Phytomenadione - antidote
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Procyclidine
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Fine to go neat should be given over at least 3 minutes
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Protamine Sulphate
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See instructions on Toxbase depending if reversing LMWH or Unfractionated heparin
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Protamine - antidote
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Pyridoxine
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See toxbase
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Pyridoxine - antidote
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Sodium Bicarbonate 8.4%
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See monograph
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Sodium Bicarbonate monograph
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Sodium Bicarbonate 1.26%
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As 8.4%
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Sodium Thiosulphate
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See toxbase entry
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Sodium thiosulphate - antidote
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European Viper Antivenom
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Toxbase has doses on both formulations and oncall pharmacy will supply the vials-Please ensure oncall pharmacy are aware this is EUROPEAN viper antivenom as this needs to be typed in the Pharmacy system properly in order to find a supply.
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