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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Definitions:

Independent Variables

Variables in an experiment or model that are manipulated or classified by the researcher to observe their effect on the dependent variable.

Standardized Residual

The value obtained by dividing a residual by its standard deviation.

Studentized Deleted Residuals

Standardized residuals that are based on a revised standard error of the estimate obtained by deleting observation i from the data set and then performing the regression analysis and computations.

Residual Transformation

Residual transformation involves altering the residuals from a data model, possibly to meet the assumptions of linear regression such as normality or homoscedasticity.