OGOrkide Güzel

Orkide Güzel

*This is an algorithmically generated author record based on publicly available information.

Orkide Güzel has a total of 18 co-authors. Here are the top co-authors by number of shared publications:

  • Ünsal Yılmaz

    University of Health Sciences Türkiye, Izmir Faculty of Medicine, Dr. Behçet Uz Children's Education and Research Hospital, Department of Pediatrics, Division of Pediatric Neurology, Izmir, Turkey

    3 shared publications
  • Aycan Unalp

    Department of Pediatric Neurology, Dr. Behçet Uz Children's Hospital, Izmir, Turkey

    1 shared publication
  • Aysel Oztürk

    Department of Pediatric Neurology, Dr. Behçet Uz Children's Hospital, Izmir, Turkey

    1 shared publication
  • Cem Karadeniz

    Department of Pediatric Cardiology & Pediatric Arrhythmia & Electrophysiology Izmir Katip Celebi University Izmir Turkey

    1 shared publication
  • Emel Ataş Berksoy

    Department of Pediatrics, Dr. Behçet Uz Children's Hospital, Izmir, Turkey

    1 shared publication
  • Gülçin Akıncı

    Department of Pediatric Neurology, Dr. Behçet Uz Children's Hospital, Izmir, Turkey

    1 shared publication

Latest Publications

  • The Impact of 3:1 Ketogenic Diet on Cardiac Repolarization Changes in Children with Refractory Seizures: A Prospective Follow-Up Study

    by Orkide Güzel, Mehmet Küçük, Cem Karadeniz, Ünsal Yılmaz, Tansel Calik, Timur Meşe, Rahmi Özdemir

    Background The association between ketogenic diet (KD) and prolonged QT interval, life-threatening ventricular arrhythmias, and sudden death is controversial. Aim We aimed to prospectively evaluate the effect of KD on electrocardiography (ECG) measures in children with refractory epilepsy. Method A total of 70 children with drug-resistant epilepsy who received a KD for at least 12 months were included in the study. The standard 12-lead electrocardiography was performed in all patients before the beginning and in the 12th month of KD. Heart rate, P-wave duration and dispersion, corrected QT interval and QT dispersion, and Tp-e interval were measured. Results All ECG-derived parameters, but P-wave dispersion increased after 12 months of KD compared with the baseline values. However, these changes were not statistically significant. Conclusion A 12-month long 3:1 KD treatment exerts no deleterious effect on cardiac repolarization measures.


  • The effect of olive oil-based ketogenic diet on serum lipid levels in epileptic children

    by Orkide Güzel, Unsal Yılmaz, Utku Uysal, Nur Arslan

    Ketogenic diet (KD) is one of the most effective therapies for intractable epilepsy. Olive oil is rich in monounsaturated fatty acids and antioxidant molecules and has some beneficial effects on lipid profile, inflammation and oxidant status. The aim of this study was to evaluate the serum lipid levels of children who were receiving olive oil-based KD for intractable seizures at least 1 year. 121 patients (mean age 7.45 ± 4.21 years, 57 girls) were enrolled. At baseline and post-treatment 1, 3, 6, and 12 months body mass index-SDS, total cholesterol, high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol and triglyceride levels were measured. Repeated measure ANOVA with post hoc Bonferroni correction was used for data analysis. The mean duration of KD was 15.4 ± 4.1 months. Mean total cholesterol, LDL-cholesterol and triglyceride levels were significantly higher at 1st, 3rd, 6th and 12th months of the KD treatment, compared to pre-treatment levels (p = 0.001), but showed no difference among during-treatment measurements. Mean body mass index-SDS and HDL-cholesterol levels were not different among the baseline and follow-up time points (p = 0.113 and p = 0.067, respectively). No child in this study discontinued the KD because of dyslipidemia. Even if rich in olive oil, high-fat KD causes significant increase in LDL-cholesterol and triglyceride levels. More studies are needed to determine the effect of KD on serum lipids in children using different fat sources in the diet.


  • Vitamin B12 deficiency in a child presenting with epileptic spasms

    by Aycan Ünalp, Emel Ataş Berksoy, Ünsal Yılmaz, Gülçin Akıncı, Orkide Güzel, Aysel Oztürk, Tanju Çelik

    Vitamin B12 deficiency may cause a wide variety of signs and symptoms such as macrocytic anemia, neurodevelopmental delay or regression, cerebral atrophy, polyneuropathy, paresthesias, degeneration of spinal cord, ataxia, irritability, weakness, hypotonia, apathy, tremor, seizures, and neuropsychiatric disorders such as schizophrenia and dementia. However, its association with epileptic spasms has been reported in only one patient before. Thus, the role of coincidence or association remains controversial. This article presents a 10-month-old girl with B12 deficiency presenting with epileptic spasms, psychomotor regression, and suppression-burst pattern on electroencephalography. After exclusion of other causes of epileptic spasms such as hypoxic ischemic encephalopathy, cortical malformations, or neurodegenerative diseases through extensive neuroimaging and laboratory investigations, epileptic spasms were regarded as the presenting clinical picture of underlying vitamin B12 deficiency. Epileptic spasms may be a neurologic manifestation of underlying vitamin B12 deficiency.

  • Efficacy and tolerability of the first antiepileptic drug in children with newly diagnosed idiopathic epilepsy

    by Ünsal Yılmaz, Tuba Sevim Yılmaz, Gülşen Dizdarer, Gülçin Akıncı, Orkide Güzel, Hasan Tekgül