PURPOSE: To evaluate the discriminative power of serial, simultaneous determinations of serum neuron-specific enolase (NSE), prolactin (PRL) and creatine kinase (CK) in differentiating psychogenic non-epileptic seizures (PNES) from epileptic seizures (ES). METHODS: Prospective measurement of the three markers after 44 single seizures (32 ES and 12 PNES) during continuous video-EEG monitoring at seven different sampling points. RESULTS: Patients with ES had a significantly greater increase in PRL at 10, 20, 30 min, 1 and 6 h. The sensitivity for elevated NSE and CK was low. PRL showed a higher sensitivity. However, the corresponding positive predictive value was lower than in CK and NSE. Additionally, PRL had the lowest specificity of all parameters. CONCLUSIONS: The limited discriminative power of PRL, CK, and NSE calls into question if these markers are helpful in differentiating PNES and ES.
PURPOSE: To evaluate the discriminative power of serial, simultaneous determinations of serum neuron-specific enolase (NSE), prolactin (PRL) and creatine kinase (CK) in differentiating psychogenic non-epilepticseizures (PNES) from epilepticseizures (ES). METHODS: Prospective measurement of the three markers after 44 single seizures (32 ES and 12 PNES) during continuous video-EEG monitoring at seven different sampling points. RESULTS:Patients with ES had a significantly greater increase in PRL at 10, 20, 30 min, 1 and 6 h. The sensitivity for elevated NSE and CK was low. PRL showed a higher sensitivity. However, the corresponding positive predictive value was lower than in CK and NSE. Additionally, PRL had the lowest specificity of all parameters. CONCLUSIONS: The limited discriminative power of PRL, CK, and NSE calls into question if these markers are helpful in differentiating PNES and ES.
Authors: Francesco Brigo; Stanley C Igwe; Roberto Erro; Luigi Giuseppe Bongiovanni; Antonio Marangi; Raffaele Nardone; Michele Tinazzi; Eugen Trinka Journal: J Neurol Date: 2014-05-14 Impact factor: 4.849