PMID- 18671911 OWN - NLM STAT- MEDLINE DCOM- 20081118 LR - 20181201 IS - 0393-5264 (Print) IS - 0393-5264 (Linking) VI - 23 IP - 2 DP - 2008 Apr-Jun TI - Oxcarbazepine and adverse events: impact of age, dosage, metabolite serum concentrations and concomitant antiepileptic therapy. PG - 97-100 AB - The aim of this study was to investigate the relationships between oxcarbazepine (OXC) dosage, metabolite mono-hydroxy-derivative (MHD) serum concentrations, number of concomitant antiepileptic drugs, age and incidence of adverse events (AEs) in epileptic patients. A retrospective analysis was conducted of 414 consecutive epileptic patients on OXC alone or added-on to previous therapy. The sample was collected from the period 2001 to 2006. Statistical analysis was performed in two groups: with and without AEs. Eighty-seven patients (21%) experienced at least one AE. The most frequent was hyponatremia, reported in 9.2%. OXC was discontinued because of AEs in 27 cases. There were no important differences between patients with and without AEs, except for age (p=0.04). The categorization of patients into three different age ranges, <20, 20-59 and (3)60 years, disclosed that the risk of AEs is notably lower in young (<20 years) and adult (20-59 years) patients (OR 0.46 and 0.51, respectively). In particular, the patients who experienced hyponatremia were significantly older than those who did not (p=0.0045). The other variables showed no major changes according to age. The incidence of major AEs during OXC treatment, leading to withdrawal, was found to be low and influenced by age, but not by OXC dosage, MHD concentrations or number of concomitant antiepileptic drugs. FAU - Ortenzi, Andrea AU - Ortenzi A AD - Regional Epilepsy Centre, Neurological Clinic, Ospedali Riuniti, Ancona, Italy. c.epilessia@ospedaliriuniti.marche.it FAU - Paggi, Aldo AU - Paggi A FAU - Foschi, Nicoletta AU - Foschi N FAU - Sabbatini, Debirah AU - Sabbatini D FAU - Pistoli, Emore AU - Pistoli E LA - eng PT - Comparative Study PT - Journal Article PL - Italy TA - Funct Neurol JT - Functional neurology JID - 8707746 RN - 0 (Anticonvulsants) RN - 33CM23913M (Carbamazepine) RN - VZI5B1W380 (Oxcarbazepine) SB - IM MH - Adolescent MH - Adult MH - Age Distribution MH - Aged MH - Aged, 80 and over MH - Anticonvulsants/*adverse effects/blood MH - Carbamazepine/adverse effects/*analogs & derivatives/blood MH - Child MH - Dose-Response Relationship, Drug MH - Drug Interactions MH - Drug Therapy, Combination MH - Epilepsy/blood/*drug therapy MH - Female MH - Humans MH - Hyponatremia/*chemically induced MH - Male MH - Middle Aged MH - Odds Ratio MH - Oxcarbazepine MH - Retrospective Studies EDAT- 2008/08/02 09:00 MHDA- 2008/11/19 09:00 CRDT- 2008/08/02 09:00 PHST- 2008/08/02 09:00 [pubmed] PHST- 2008/11/19 09:00 [medline] PHST- 2008/08/02 09:00 [entrez] AID - 2955 [pii] PST - ppublish SO - Funct Neurol. 2008 Apr-Jun;23(2):97-100.