Análisis de la aportación al diagnóstico de la monitorización VIDEO-EEG ambulatoria

Abstract

The aim of this study has been : 1-To analyse the usefulness of ambulatory video-EEG monitoring (VEEG) on diagnosis of paroxysmal events. 2-To analyse which factors are determinant to obtain the same diagnosis results after clinical interview and VEEG. 42 ictal video-EEG were recorded from March 2000 to September 2005. Detailed and standardized clinical history had been previously recorded in all subjects. Protocolized data regarding semiology of seizures, informants (patients or witness), patient's phatological background and his familial history, physical examinations, interictal EEG and neuroimaging studies were obtained. Diagnosis of paroxysmal event (epilectic seizure, syncope, psychogenic nonepileptic seizure,.) classification of epileptic seizures and classification of epilepsia was recorded twice, first from findings in clinical interview, interictal EEG and neuroimaging and in second place form VEEG test. VEEG registers were analysed separately by two different experts, one of them without knowing the results obtained in clinical interview. CONCLUSIONS 1- One out of three paroxysmal events classified after clinical interview as epileptic seizures were not such epileptic seizures. 2- 20% of paroxysmal events diagnosticated as epileptic seizures after clinical interview, were considered as unclassified epileptic seizures and couldn't be classified into any specific epileptic syndrome. 75% of these were not epileptic seizures. 3- Having the opportunity of interrogating witness during the clinical interview, becomes decisive to establish the diagnosis of paroxysmal events. A correct diagnosis was established in 82% of studied paroxysmal events when information was provided by a witness and in 40% when this was provided only by a patient. 4- In our study interictal EEG is of great significance to achieve diagnosis of epilepsia, with a positive predictive value of 92,5% and a negative predictive value of 80%.

Date of Award	12 Jun 2008
Original language	Undefined/Unknown
Supervisor	José María Grau Veciana (Director)