Katerina Lykeridou

Prof. Dr. Katerina Lykeridou

Department of Midwifery, School of Health and Care Sciences, University of West Attica, Athens, Greece

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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9 February 2023 in Clinics and Practice
Verified
Journal Article
Open access
PDF file
PDPanagiota Dourou
Panagiota Dourou
KGKleanthi Gourounti
Kleanthi Gourounti
KLKaterina Lykeridou
Katerina Lykeridou
KGKonstantina Gaitanou
Konstantina Gaitanou
NPNikolaos Petrogiannis
Nikolaos Petrogiannis
Antigoni SarantakiAntigoni Sarantaki
Antigoni Sarantaki
Fertility-related stress can negatively impact infertile couples’ quality of life (QoL). Most previous studies have concentrated on the effects of stress and infertility on individual persons, especially women, though infertility affects the QoL of both spouses. Our research aimed to investigate the roles of infertility and stress in couples’ quality of life as a single unit. The research sample consisted of 202 spouses, i.e., 101 couples, with a mean age of 39.5 years (SD = 4.9 years) undergoing fertility treatment at Athens Naval Hospital-Assisted Reproduction Unit. Data collection was completed via self-administered questionnaires: the FertiQoL International Questionnaire for measuring the quality of life in infertility and The Demographic Information and Medical History Questionnaire. Data collection was conducted between January and November 2022. Quantitative variables are expressed as mean values (standard deviation) and as median interquartile range, and qualitative variables are expressed as absolute and relative frequencies. Pearson’s (r) and Spearman’s (rho) correlations coefficients were used to explore the association of two continuous variables. Multiple linear regression analysis was used with dependence on the Ferti-QoL’s subscales. The regression equation included terms for participants’ demographics and information from their medical history. Adjusted regression coefficients (β) with standard errors (SE) were computed from the results of the linear regression analyses. All reported p values are two-tailed. Statistical significance was set to p < 0.05, and analyses were conducted using SPSS statistical software (version 22.0). We found that greater anxiety and depression were significantly associated with worse quality of life. Additionally, quality of life, according to Ferti-QoL, was significantly worse in women, participants with a high level of education, those with greater depressive symptoms, and those with greater state scores. Findings of this study highlight the need for implementing interventions of supportive care methods, counseling, stress reduction methods, and improving the fertility-related quality of life of infertile couples.

Eirini OrovouEirini Orovou
Eirini Orovou
Maria DaglaMaria Dagla
Maria Dagla
Georgios IatrakisGeorgios Iatrakis
Georgios Iatrakis
KLKaterina Lykeridou
Katerina Lykeridou
CTChara Tzavara
Chara Tzavara
Evangelia AntoniouEvangelia Antoniou
Evangelia Antoniou
A birth experience with cesarean section (CS) can be a cause of the development of post-traumatic stress disorder after a cesarean (PTSD-AC) or profile PTSD, for a percentage of women. So far, there is no data on the frequency of PTSD-AC in Greece and this syndrome is often associated with other mental disorders of the postpartum period. The purpose of this research is to associate the kind of CS with PTSD-AC for Greek mothers and the combination of factors that make them less resistant to trauma. A sample of ahundred and sixty-six mothers who gave birth with emergency cesarean section (EMCS) and elective cesarean section (ELCS) at a Greek University hospital have consented to participate in the two phases of the survey, in the 2nd day postpartum and a follow-up in the 6th week postpartum. Medical/demographic data and a life events checklist (LEC-5) with Criterion A and post-traumatic stress checklist (PCL-5) were used to diagnose PTSD and PTSD Profile. Out of166 mothers enrolled, 160 replied to the follow-up (96.4%), ELCS 97 (97%) and EMCS 63 (95%). Twenty (31.7%) EMCS had PTSD and nine (14.3%) had Profile. One (1%) ELCS had PTSD and 4 (4.1%) had Profile. This survey shows a high prevalence rate of PTSD after EMCS with additional risk factors of preterm labor, inclusion in the Neonatal Intensive Care Unit (NICU), a lack of breastfeeding, and a lack of support from the partner.

30 November 2022 in Vaccines
Verified
Journal Article
Open access
PDF file
Antigoni SarantakiAntigoni Sarantaki
Antigoni Sarantaki
VKVasiliki Evangelia Kalogeropoulou
Vasiliki Evangelia Kalogeropoulou
CTChrysoula Taskou
Chrysoula Taskou
CNChristina Ioannis Nanou
Christina Ioannis Nanou
KLKaterina Lykeridou
Katerina Lykeridou
Mass vaccination against COVID-19 is necessary to control the pandemic. COVID-19 vaccines are now recommended during pregnancy to prevent the disease. A systematic review of the literature in the electronic databases PubMed and EMBASE was performed and we aimed to investigate the attitude of documents towards COVID-19 vaccination and the prognostic factors of vaccination hesitation. A meta-analysis was also conducted to estimate the overall percentage of pregnant women who were willing to be vaccinated or had been vaccinated against COVID-19. A total of 18 studies were included in the review and meta-analysis. The acceptance rate of vaccination against COVID-19 among pregnant women ranged from 17.6% to 84.5%. The pooled proportion of acceptance of vaccination against COVID-19 in pregnant women was 0.53 (95% CI: 0.44–0.61). Predictors of acceptance of COVID-19 vaccination were older age, White race, occupational status, higher level of education, comorbidities, third trimester of pregnancy, influenza vaccination, knowledge about COVID-19, and confidence that vaccines for COVID-19 are safe and effective. The prevalence of COVID-19 vaccination in pregnant women is low. Targeted information campaigns are needed to increase vaccine education in this population.

6 January 2025 in Metabolism Open
Verified
Journal Article
Open access
MVMaria Velissariou
Maria Velissariou
CACHRYSOULA-ROZALIA ATHANASIADOU
CHRYSOULA-ROZALIA ATHANASIADOU
ADAthina Diamanti
Athina Diamanti
KLKaterina Lykeridou
Katerina Lykeridou
Antigoni SarantakiAntigoni Sarantaki
Antigoni Sarantaki
Polycystic Ovary Syndrome (PCOS) is a prevalent endocrine disorder characterized by hyperandrogenism, insulin resistance, and menstrual irregularities, leading to infertility in many women. Emerging evidence suggests intermittent fasting (IF), particularly time-restricted feeding (TRF), may improve reproductive and metabolic outcomes in women with PCOS by addressing core pathophysiological mechanisms. This systematic review examines the impact of IF on fertility and reproductive hormones in women with PCOS. A systematic search was conducted in PubMed, Scopus, and Cochrane Library using predefined search terms related to intermittent fasting, fertility, and PCOS. Eligible studies published between 2014 and 2024 were identified following Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Inclusion criteria targeted primary research evaluating the effects of IF on reproductive outcomes, menstrual irregularities, and metabolic parameters in women with PCOS. Data extraction and quality assessment were performed using the Caldwell framework. Three studies were included in the review. TRF interventions led to significant improvements in menstrual regularity, with 33-40 % of participants reporting normalized cycles. Reductions in total testosterone, free androgen index, anti-Müllerian hormone (AMH), and luteinizing hormone (LH) levels were observed, alongside increased sex hormone-binding globulin (SHBG). TRF also improved insulin sensitivity, reduced body weight, and decreased inflammatory markers, all of which contribute to enhanced reproductive outcomes. Key outcomes included a 9 % reduction in testosterone levels, 26 % reduction in the free androgen index (FAI), and significant improvements in menstrual regularity (33-40 %). Intermittent fasting, particularly TRF, shows potential as a non-pharmacological intervention to improve reproductive health and fertility in women with PCOS. By targeting hyperandrogenism, insulin resistance, and menstrual irregularities, TRF offers a promising lifestyle approach. However, larger randomized controlled trials with long-term follow-up are needed to confirm these findings and establish IF as a standard therapeutic option for PCOS management.

2 January 2022 in Children
Verified
Journal Article
Open access
PDF file
Maria TigkaMaria Tigka
Maria Tigka
Dimitra MetallinouDimitra Metallinou
Dimitra Metallinou
CNChristina Ioannis Nanou
Christina Ioannis Nanou
ZIZoi Iliodromiti
Zoi Iliodromiti
KLKaterina Lykeridou
Katerina Lykeridou
Breastfeeding is considered to be the cornerstone of child health. In Europe however, overall breastfeeding rates remain low. The present study aimed at estimating the frequency of breastfeeding in Greece during the COVID-19 pandemic period and comparing findings with the latest national study in order to identify a potential impact of the pandemic. Additionally, possible correlations of socio-cultural and demographic characteristics with breastfeeding indicators were investigated. This prospective cohort study included 847 women from five tertiary maternity hospitals, between January and December 2020. Data were collected by a structured questionnaire via interview during hospitalization and via telephone in the first, third and sixth month postpartum. Results showed that all breastfeeding indicators improved over the last three years. Full breastfeeding reached 7.2%, contrary to 0.78% of the latest national study at six months postpartum. Employment, marital status, educational level, mode of delivery, type of maternity hospital, body mass index before pregnancy, previous breastfeeding experience of the mother and infant’s birth weight correlated significantly with breastfeeding indicators at different time periods. The COVID-19 pandemic seems to have favorably influenced breastfeeding initiation and duration in Greece due to lockdowns, home confinement and teleworking.

1 September 2022 in European Journal of Midwifery
Verified
Journal Article
Open access
KGKleanthi Gourounti
Kleanthi Gourounti
Antigoni SarantakiAntigoni Sarantaki
Antigoni Sarantaki
MDMaria-Eleni Dafnou
Maria-Eleni Dafnou
EHEleni Hadjigeorgiou
Eleni Hadjigeorgiou
KLKaterina Lykeridou
Katerina Lykeridou
NMNicos Middleton
Nicos Middleton
Introduction: The purpose of this study was to explore the learning needs and the digital health literacy of pregnant women in Greece regarding perinatal health and care issues. Methods: This was a qualitative study involving thirteen Greek pregnant women, in two focus groups of primiparous...