Abstract
Phenytoin binding to serum proteins and factors influencing protein binding were investigated in 38 critically ill trauma patients. In 24% of these patients, the free fraction of phenytoin was less-than-or-equal-to 10%, whereas in 76%, the free phenytoin fraction was increased >10%-up to 24%. Nonantiepileptic comedication, sex, or age had no influence on phenytoin binding in any of the 38 patients. Elevated free phenytoin fraction was found in those with hypoalbuminemia and hepatic and renal impairments. In these patients, the free phenytoin fraction should be measured routinely.
Original language | English |
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Pages (from-to) | 139-144 |
Number of pages | 6 |
Journal | Therapeutic Drug Monitoring |
Volume | 16 |
Issue number | 2 |
Publication status | Published - Apr-1994 |
Keywords
- PHENYTOIN-FREE FRACTION
- CRITICALLY ILL PATIENTS
- PLASMA-PROTEIN BINDING
- UNBOUND PHENYTOIN
- EPILEPTIC PATIENTS
- DIPHENYLHYDANTOIN
- SERUM
- DRUGS
- SEIZURES
- ALBUMIN
- DISEASE