The Principal Mechanism of Action of Phenytoin (Dilantin) in Treating

question 171

Multiple Choice

The principal mechanism of action of phenytoin (Dilantin) in treating status seizures is the:

• A) blocking of GABA receptor sites to prevent further cellular activity in the CNS.
• B) influx of calcium ions through calcium channels to enhance depolarization.
• C) blocking of acetylcholine receptor sites at the neuromuscular junction to prevent convulsions.
• D) prevention of sodium ions entering the cell by closing sodium channels.

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