Flicker electroretinogram in preterm infants.

BACKGROUND: Infants born prematurely are at risk of developing retinopathy of prematurity, which is associated with abnormalities in retinal function as measured using electroretinography. The aim of this study was to record non-invasive flicker electroretinograms (ERGs) in preterm infants and compare function of moderate and very or extremely preterm infants. METHODS: In this non-randomized, cross-sectional study, 40 moderate preterm (gestational age (GA) 34 0/7 to 36 6/7 weeks, Group A) and 40 very or extremely preterm infants (GA ≤ 31 weeks, Group B) were recruited for flicker ERG recording through closed eyelids using the RETeval® device and skin electrodes. Group A was tested within the first week of life and Group B between 34th and 37th week postmenstrual age. Flicker stimuli were presented at 28.3 Hz with stimulus levels of 3, 6, 12, 30 and 50 cd•s/m2. Primary endpoints were peak time (ms) and amplitude (µV). RESULTS: Flicker ERGs were recordable in most infants with the highest proportion of reproducible ERGs at 30 cd•s/m2. Amplitudes increased with stronger flicker stimulation, while peak times did not differ significantly between stimulus levels nor groups. Amplitudes were significantly greater in Group B at the strongest stimulus level (Mann-Whitney-U-Test=198.00, Z = 4.097, p = <0.001). CONCLUSIONS: Feasibility of collecting flicker ERG data in most preterm infants was confirmed. We found no evidence of reduced retinal responses to flicker stimuli associated with extreme prematurity. Higher amplitudes in very and extremely preterm infants could indicate acceleration of retinal development following birth, triggered by visual stimulation.

Higher incidence of retinopathy of prematurity in extremely preterm infants associated with improved survival rates.

AIM: This study assessed possible reasons for the increasing incidence of retinopathy of prematurity (ROP) since mid-2015 at our institution. METHODS: Retrospective analysis of all preterm infants born July 2013 to June 2017 with a gestational age (GA) <29 completed weeks admitted to the neonatal intensive care unit at the University Hospital Zurich during the first 28 days of life. The primary outcome measures were severest ROP stage. Statistical analysis was performed using generalised additive models in R. RESULTS: During the study period, survival increased in extremely preterm infants. Significant predictors for severest ROP stage were GA, days of mechanical ventilation and multiple gestation (P = .0322). A composite of severe comorbidities had no significant effect on severest ROP stage. GA was identified as the only significant risk factor the for severest ROP stage (P = .0045). CONCLUSION: Increased survival rate of extremely preterm infants was associated with an increased incidence of ROP at our institution. Despite the increase, the incidence is still very low compared with other countries. No other additive factors were identified.

Another face of violence against women: Infertility.

BACKGROUND & OBJECTIVE: Violence against women is a widespread problem and has serious implications on women's health. Infertility, in many ways, is a very stressful condition that affect social and marital life of a couple; moreover, compared to fertile women, infertile women are twice as vulnerable against violence. Our objective was to determine the prevalence of violence and define the effect of infertility on violence on women receiving infertility treatment. METHODS: Descriptive and cross-sectional study was carried out 301 infertile women between November 2015 and August 2016 in a state hospital, Izmir. Data were collected as "Sociodemographic Characteristics Form" and "Infertile Women's Exposure to Violence Determination Scale". RESULTS: The mean age of women was 31.77±5.46 years; the average duration of marriage was 6.93±4.53 years. About 32.5% of women stated that they have suffered from violence throughout their lives and 4.7% of women were still suffering from violence, while 5.0% of women were subjected to violence after infertility was diagnosed. CONCLUSION: It is an encouraging finding that infertile women have a low exposure to violence. However, despite a low violence rate, there is an increase in violence toward women who have been diagnosed with infertility.