Related Experiment Videos
Phenytoin elimination after intoxication during long-term treatment
The Medical Journal of Australia
|September 4, 1982
Summary
Phenytoin (Dilantin) overdose is common due to its metabolism. If phenytoin levels exceed 130 mumol/L, stop the drug for 72-84 hours and restart at a lower dose to manage intoxication.
Area of Science:
- Pharmacology
- Clinical Toxicology
Background:
- Phenytoin metabolism is saturable, leading to frequent intoxication from overdosage.
- Phenytoin (Dilantin) is a widely used anticonvulsant medication.
Purpose of the Study:
- To systematically study phenytoin elimination in patients with clinical signs of overdosage.
- To establish guidelines for managing phenytoin intoxication based on serum levels.
Main Methods:
- A systematic study of phenytoin elimination was conducted in six patients.
- Patients presented with clinical signs of overdosage and elevated initial serum phenytoin levels (above 40-80 mumol/L).
Main Results:
- Phenytoin elimination patterns were analyzed in patients with high serum levels.
- Data informed a recommended management strategy for phenytoin intoxication.
Conclusions:
- An initial serum phenytoin level determination is recommended for patients with suspected intoxication.
- If levels exceed 130 mumol/L, a temporary withdrawal (72-84 hours) followed by recommencing at a lower dose is advised.