Analysis of the Early Development of the Visual Function in Extreme Premature Infants Under 28th Weeks of Gestation (fVEP)
Recruitment status was: Recruiting
The aim of this study is to collect data on the early visual development of extreme premature infants. The method is the measurement of flash visual evoked potentials and the study population includes premature infants under the 28th weeks of gestation, who have normal cranial ultrasound examinations, normal aEEG, no clinical neurological symptoms and who have a normal ophthalmological status.
fVEP measurements were recorded from the first week of life every second week until term.
The fVEP recordings were performed in active sleep, in stable premature infants, who were continuously monitored. The Nihon Kohden Neuropack 8 was used, the stimulus frequency was 0,5 Hz, artefact free averages were analyzed.
The measurements were analyzed according to the presence and absence of known waveforms, their latencies and amplitudes. Longitudinal analysis was performed to analyse the effect of extrauterine visual development on fVEP with growing gestational ages.
|Study Design:||Observational Model: Cohort
Time Perspective: Prospective
|Official Title:||Analysis of the Early Development of the Visual Function in Extreme Premature Infants Under 28th Weeks of Gestation. - A Prospective Study to Identify Normal Values of Flash Visual Evoked Potentials in This Population|
- Latency and Amplitude of Visual Evoked Potential waveforms measured in the first week of life than every second week prospectively until term. [ Time Frame: Until term ]
|Study Start Date:||February 2008|
Extreme premature infants under the 28th week of gestation.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00768586
|Medical University Vienna, Department of Pediatrics, Neonatology|
|Vienna, Austria, 1090|
|Principal Investigator:||Manfred Weninger, MD, PhD.||MUV|