Till sidans topp

Sidansvarig: Webbredaktion
Sidan uppdaterades: 2012-09-11 15:12

Tipsa en vän
Utskriftsversion

Flash visual evoked poten… - Göteborgs universitet Till startsida
Webbkarta
Till innehåll Läs mer om hur kakor används på gu.se

Flash visual evoked potentials are unreliable as markers of ICP due to high variability in normal subjects.

Artikel i vetenskaplig tidskrift
Författare Linnea Andersson
Johanna Sjölund
Josefin Nilsson
Publicerad i Acta neurochirurgica
Volym 154
Nummer/häfte 1
Sidor 121-127
ISSN 0942-0940
Publiceringsår 2012
Publicerad vid Institutionen för neurovetenskap och fysiologi, sektionen för klinisk neurovetenskap och rehabilitering
Sidor 121-127
Språk en
Länkar dx.doi.org/10.1007/s00701-011-1152-...
Ämnesord Flash visual evoked potentials, Intracranial pressure, N2 latency, Intracranial hypertension
Ämneskategorier Klinisk neurofysiologi

Sammanfattning

BACKGROUND: Previous publications have suggested a high correlation between flash visual evoked potential (F-VEP) N2 peak latency and intracranial pressure. This would enable F-VEP to be used as a non-invasive and inexpensive method to estimate ICP in a number of settings. However, basic knowledge about variability across subjects and test-retest properties of the F-VEP is lacking. METHODS: Fifteen healthy adult subjects were tested on three different occasions. F-VEP responses were recorded using international standards. FINDINGS: For the tested population, mean N2 latency was 65.7 ms (SD 10.7 ms) and the range was 48-110 ms. Intra-individual variability was high, in four of the 15 subjects more than 15 ms between testing sessions. The same was found for P2 latency and for N2 and P2 amplitudes. The response waveform was very variable and unambiguous marking of peaks was often diffucult. One out of the 15 subjects had a very poorly developed F-VEP response, but a normal pattern-reversal VEP response. CONCLUSIONS: F-VEP has a wide range of latency, amplitude and waveform across normal subjects. A large proportion of subjects also had a high intra-individual variability over time. This variability makes F-VEPs unreliable as a marker for intracranial pressure, and caution in interpreting F-VEP changes in clinical work is advised.

Sidansvarig: Webbredaktion|Sidan uppdaterades: 2012-09-11
Dela:

På Göteborgs universitet använder vi kakor (cookies) för att webbplatsen ska fungera på ett bra sätt för dig. Genom att surfa vidare godkänner du att vi använder kakor.  Vad är kakor?