Edrophonium

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Edrophonium
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Systematic (IUPAC) name
N-ethyl-3-hydroxy-N,N-dimethylbenzenaminium
Identifiers
CAS Number 116-38-1
ATC code none
PubChem CID 8307
DrugBank APRD00944
ChemSpider 8006
Chemical data
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Molar mass 166.24 g/mol[[Script error: No such module "String".]]
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Edrophonium is a readily reversible acetylcholinesterase inhibitor. It prevents breakdown of the neurotransmitter acetylcholine and acts by competitively inhibiting the enzyme acetylcholinesterase, mainly at the neuromuscular junction. It is sold under the trade names Tensilon, Enlon and Reversol.

Clinical uses

Indication: PSVT refractory to vagal maneuvers; considered a second-line agent to Verapamil or Adenosine. Because its duration of action is only about 20 minutes, edrophonium (by the so-called Tensilon test) is used to differentiate myasthenia gravis from cholinergic crisis. In myasthenia gravis, where a person is not able to produce enough neuromuscular stimulation, edrophonium will reduce the muscle weakness by effectively supplying more acetylcholine. In a cholinergic crisis, where a person has too much neuromuscular stimulation, edrophonium will make the muscle weakness worse by inducing a depolarizing block.

Sources

  1. Brenner, G. M. (2000). Pharmacology. Philadelphia, PA: W.B. Saunders Company. ISBN 0-7216-7757-6
  2. Canadian Pharmacists Association (2000). Compendium of Pharmaceuticals and Specialties (25th ed.). Toronto, ON: Webcom. ISBN 0-919115-76-4
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fr:Tensilon pt:Edrofônio