Browsing by Author "Güven, B"

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    Cardiovascular risk factors and noninvasive assessment of arterial structure and function in obese Turkish children
    Yilmazer, MM; Tavli, V; Carti, OU; Mese, T; Güven, B; Aydin, B; Devrim, I; Tavli, T
    Obesity is associated with a number of risk factors, such as hyperlipidemia, hyperinsulinemia, hypertension, and early atherosclerosis. Evidence indicates that atherosclerosis begins in childhood and progresses over decades. In this work, we examined the relationship between cardiovascular risk factors and ultrasonographic signs of subclinical atherosclerosis in 77 obese children and adolescents compared to 40 non-obese healthy peers. Carotis intima media thickness (cIMT), carotid artery compliance (CAC), brachial artery flow-mediated dilatation (FMD), and established cardiovascular risk factors were studied. In the obese patients, cIMT was significantly increased (0.57 mm vs 0.45 mm, p < 0.001) whereas CAC (1.84% vs 3.29%, p < 0.001) and FMD (9.67 % vs 14.81%, p < 0.001) were significantly decreased. In multiple linear regression analysis, a relation was observed between cIMT, CAC, brachial FMD on one hand, and body mass index (BMI) on the other. Among the lipid anomalies, only hypertriglyceridemia was found to be positively correlated with cIMT. Additionally, we found a significant association between waist circumference (WC) and FMD. These findings indicate that obesity in children is associated with arterial wall alterations and endothelial dysfunction. In hyperlipidemic situations, only hypertriglyceridemia was found to be positively correlated with cIMT. This finding has consistently indicated TG to be a risk factor for the development of atherosclerosis. To our knowledge this is the first study to determine the relation between FMD and WC, which is used as a parameter of obesity in childhood.
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    The Change of Geometric Thinking Habit of Prospective Teachers
    Bülbül, BÖ; Güven, B
    Individuals need to have some geometric habits of minds such as reasoning with the relationship, considering the specific cases and generalizing geometric ideas, exploration and reflection, and investigating invariants as well as content knowledge. In this study, it was aimed to investigate the changes in preservice mathematics teachers' habits of mind through the freshmen year to senior year in a teacher education program. In this direction, the main purpose of this study was to discuss teacher training programs in universities. The participants of this study, which is conducted by longitudinal research method, were 31 preservice teachers who enrolled in a mathematics teacher education undergraduate program in a state university in 2012 - 2016. Data collection tools were four open-ended questions addressing to geometric habits of mind. The data were analyzed via geometric habits of mind's indicators. The results showed that preservice teachers used exploration and reflection, and reasoning with relationship habits more in their senior year in comparison with their freshman year. This result means that context of the courses directed preservice teachers to the habits of exploration and reflection and reasoning with relationship. Yet, preservice teachers need to use other geometric habits of mind to overcome geometry problems.
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    The Frequency of Lysosomal Acid Lipase Deficiency in Children With Unexplained Liver Disease
    Kuloglu, Z; Kansu, A; Selbuz, S; Kalayci, AG; Sahin, G; Kirsaclioglu, CT; Demirören, K; Dalgiç, B; Kasirga, E; Önal, Z; Islek, A; Eren, E; Hosnut, FÖ; Urganci, N; Yaman, A; Özkan, T; Bozbulut, E; Dogan, G; Eksi Bozbulut, N; Dogan, G; Durmaz Ugurcan, Ö; Usta, AM; Arslan, D; Akçam, M; Isik, IA; Ecevit, ÇÖ; Usta, Y; Özgür, T; Özçay, F; Balamtekin, N; Öztürk, Y; Balamtekin, N; Öztürk, Y; Cantez, S; Gülerman, F; Üstündag, GH; Emiroglu, HH; Karacabey, N; Comba, A; Erdemir, G; Aydogan, AU; Gökçe, S; Kuyum, P; Gülsan, M; Tosun, MS; Tokgöz, Y; Güven, B; Yüksekkaya, H; Tümgör, G; Eren, M; Baran, M; Gümüs, M; Canan, O; Kocamaz, H; Gerenli, N; Çakir, M; Agin, M; Hizli, S; Dogan, Y; Çeltik, Ç; Deveci, U; Balci Sezer, O
    Objectives: Evidence suggests that lysosomal acid lipase deficiency (LAL-D) is often underdiagnosed because symptoms may be nonspecific. We aimed to investigate the prevalence of LAL-D in children with unexplained liver disease and to identify demographic and clinical features with a prospective, multicenter, cross-sectional study. Methods: Patients (aged 3 months-18 years) who had unexplained transaminase elevation, unexplained hepatomegaly or hepatosplenomegaly, obesity-unrelated liver steatosis, biopsy-proven cryptogenic fibrosis and cirrhosis, or liver transplantation for cryptogenic cirrhosis were enrolled. A Web-based electronic data collection system was used. LAL activity (nmol/punch/h) was measured using the dried blood spot method and classified as LAL-D(<0.02), intermediate (0.02-0.37) or normal (>0.37). Asecond dried blood spot sample was obtained from patients with intermediate LAL activity for confirmation of the result. Results: A total of 810 children (median age 5.6 years) from 795 families were enrolled. The reasons for enrollment were unexplained transaminase elevation (62%), unexplained organomegaly (45%), obesity-unrelated liver steatosis (26%), cryptogenic fibrosis and cirrhosis (6%), and liver transplantation for cryptogenic cirrhosis (<1%). LAL activity was normal in 634 (78%) and intermediate in 174 (21%) patients. LAL-D was identified in 2 siblings aged 15 and 6 years born to unrelated parents. Dyslipidemia, liver steatosis, and mild increase in aminotransferases were common features in these patients. Moreover, the 15-year-old patient showed growth failure and microvesicular steatosis, portal inflammation, and bridging fibrosis in the liver biopsy. Based on 795 families, 2 siblings in the same family were identified as LAL-D cases, making the prevalence of LAL-D in this study population, 0.1% (0.125%-0.606%). In the repeated measurement (76/174), LAL activity remained at the intermediate level in 38 patients. Conclusions: Overall, the frequency of LAL-D patients in this study (0.1%) suggests that LAL-D seems to be rare even in the selected high-risk population.
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    Gastrostomy in Hospitalized Patients with Acute Stroke: NoroTek Turkey Point Prevalence Study Subgroup Analysis
    Topçuoglu, MA; Özdemir, AÖ; Aykaç, Ö; Milanoglu, A; Gökçe, M; Bavli, S; Çabalar, M; Yayla, V; Erdogan, HA; Özkul, A; Günes, A; Degirmenci, B; Aluçlu, U; Kozak, HH; Güngör, L; Erdogan, M; Acar, ZÖ; Cenikli, U; Kablan, Y; Yilmaz, A; Genç, H; Nazliel, B; Çaglayan, HB; Gencer, ES; Ay, H; Demirbas, H; Akdogan, Ö; Emre, U; Yildiz, ÖK; Bolayir, A; Demir, T; Tanriverdi, Z; Tekan, ÜY; Akpinar, ÇK; Özkan, E; Ilik, F; Sirin, H; Güler, A; Önder, H; Bektas, H; Öcek, L; Bakar, M; Ongun, N; Krespi, Y; Isikay, CT; Aslanbaba, E; Sorgun, M; Gürkas, E; Karadeli, HH; Midi, I; Ilgezdi, I; Bilgiç, AB; Akyol, S; Epçeliden, MT; Atmaca, MM; Kursun, O; Keskin, O; Sirinocak, PB; Baydemir, R; Akçakoyunlu, M; Öztürk, S; Özel, T; Ünal, A; Dora, B; Yürekli, VA; Arlier, Z; Eren, A; Yilmaz, A; Kisabay, A; Acar, B; Bastan, B; Acar, Z; Niflioglu, B; Güven, B; Kaya, D; Afsar, N; Yazici, D; Aytaç, E; Yaka, E; Toplutas, E; Degirmenci, E; Ince, FB; Büyükserbetçi, G; Aydin, I; Çetiner, M; Sen, M; Turgut, N; Kale, N; Çoban, E; Yesilot, N; Ekizoglu, E; Kizek, Ö; Birgili, Ö; Yevgi, R; Kunt, R; Giray, S; Akkas, SY; Senadim, S; Yoldas, T; Asil, T; Duman, T; Atasoy, T; Çinar, BP; Demir, T; Can, U; Ünsal, YÖ; Eskut, N; Aslan, Y; Bas, DF; Sener, U; Yilmaz, Z; Bozdogan, Z; Alioglu, Z; Arsava, EM
    Objective: Nutritional status assessment, dysphagia evaluation and enteral feeding decision are important determinants of prognosis in acute neurovascular diseases. Materials and Methods: NoroTek is a point prevalence study conducted with the participation of 87 hospitals spread across all health sub regions of Turkey conducted on 10-May-2018 (World Stroke Awareness Day). A total of 972 hospitalized neurovascular patients [female: 53%, age: 69 +/- 14; acute ischemic stroke in 845; intracerebral hematoma (ICH) in 119 and post-resuscitation encephalopathy (PRE) in 8] with complete data were included in this sub-study. Results: Gastrostomy was inserted in 10.7% of the patients with ischemic stroke, 10.1% of the patients with ICH and in 50% of the patients with PRE. Independent predictors of percutaneous endoscopic gastrostomy (PEG) administration were The National Institutes of Health Stroke Scale score at admission [exp (ss): 1.09 95% confidence interval (CI): 1.05-1.14, per point] in ischemic stroke; and mechanical ventilation in ischemic [exp (ss): 6.18 (95% CI: 3.16-12.09)] and hemorrhagic strokes [exp (ss): 26.48 (95% CI: 1.36-515.8)]. PEG was found to be a significant negative indicator of favorable (modified Rankin's scale score 0-2) functional outcome [exp (ss): 0.032 (95% CI: 0.004-0.251)] but not of in-hospital mortality [exp (ss): 1.731 (95% CI: 0.785-3.829)]. Nutritional and swallowing assessments were performed in approximately two-thirds of patients. Of the nutritional assessments 69% and 76% of dysphagia assessments were completed within the first 2 days. Tube feeding was performed in 39% of the patients. In 83.5% of them, tube was inserted in the first 2 days; 28% of the patients with feeding tube had PEG later. Conclusion: The NoroTek study provided the first reliable and large-scale data on key quality metrics of nutrition practice in acute stroke in Turkey. In terms of being economical and accurate it makes sense to use the point prevalence method.
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    The Definition of Sarcomeric and Non-Sarcomeric Gene Mutations in Hypertrophic Cardiomyopathy Patients: A Multicenter Diagnostic Study Across Turkiye
    Oktay, V; Tüfekçioglu, O; Yilmaz, DÇ; Onrat, E; Karabulut, D; Çelik, M; Balcioglu, AS; Sucu, MM; Özdemir, G; Kaya, H; Kis, M; Güven, B; Bagdatoglu, O; Çaglar, FNT; Yüksel, UÇ; Düzen, IV; Barutçu, A; Simsir, ÖS; Basarici, I; Parspur, A; Dalgiç, O; Özlük, FÖA; Evlice, M; Sag, S; Deniz, MF; Öcal, A; Gazi, E; Sen, T; Özdabakoglu, O; Çakici, NB; Bakir, EO; Kunak, AÜ; Çayli, G; Tasdelen, AG; Aksit, E; Çil, SU; Onay, H
    Background: Hypertrophic cardiomyopathy is a common genetic heart disease and up to 40%-60% of patients have mutations in cardiac sarcomere protein genes. This genetic diagnosis study aimed to detect pathogenic or likely pathogenic sarcomeric and non-sarcomeric gene mutations and to confirm a final molecular diagnosis in patients diagnosed with hypertrophic cardiomyopathy. Methods: A total of 392 patients with hypertrophic cardiomyopathy were included in this nationwide multicenter study conducted at 23 centers across Turkiye. All samples were analyzed with a 17-gene hypertrophic cardiomyopathy panel using next-generation sequencing technology. The gene panel includes ACTC1, DES, FLNC, GLA, LAMP2, MYBPC3, MYH7, MYL2, MYL3, PLN, PRKAG2, PTPN11, TNNC1, TNNI3, TNNT2, TPM1, and TTR genes. Results: The next-generation sequencing panel identified positive genetic variants (variants of unknown significance, likely pathogenic or pathogenic) in 12 genes for 121 of 392 samples, including sarcomeric gene mutations in 30.4% (119/392) of samples tested, galactosidase alpha variants in 0.5% (2/392) of samples and TTR variant in 0.025% (1/392). The likely pathogenic or pathogenic variants identified in 69 (57.0%) of 121 positive samples yielded a confirmed molecular diagnosis. The diagnostic yield was 17.1% (15.8% for hypertrophic cardiomyopathy variants) for hypertrophic cardiomyopathy and hypertrophic cardiomyopathy phenocopies and 0.5% for Fabry disease. Conclusions: Our study showed that the distribution of genetic mutations, the prevalence of Fabry disease, and TTR amyloidosis in the Turkish population diagnosed with hypertrophic cardiomyopathy were similar to the other populations, but the percentage of sarcomeric gene mutations was slightly lower.
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    Atrial Fibrillation Management in Acute Stroke Patients in Türkiye: Real-life Data from the NöroTek Study
    Topçuoglu, MA; Arsava, EM; Özdemir, AÖ; Aykaç, Ö; Çetiner, M; Gencer, ES; Günes, A; Krespi, Y; Yaka, E; Öcek, L; Tanriverdi, Z; Tekan, ÜY; Özkul, A; Özkan, E; Sirin, H; Güler, A; Kursun, O; Kunt, R; Cenikli, U; Acar, B; Kablan, Y; Yilmaz, A; Isikay, CT; Aslanbaba, E; Sorgun, M; Bektas, H; Çabalar, M; Yayla, V; Erdogan, HA; Gökçe, M; Bavli, S; Ongun, N; Keskin, AO; Akdogan, Ö; Emre, U; Yildiz, ÖK; Bolayir, A; Akpinar, ÇK; Karadeli, HH; Özel, T; Ünal, A; Dora, B; Arlier, Z; Eren, A; Milanoglu, A; Nazliel, B; Çaglayan, HB; Güven, B; Erdogan, M; Acar, ZÖ; Bakar, M; Giray, S; Senadim, S; Asil, T; Demir, T; Ünsal, YÖ; Eskut, N; Aslan, Y; Bas, DF; Sener, U; Degirmenci, B; Aluçlu, U; Bastan, B; Acar, Z; Niflioglu, B; Yazici, D; Aytaç, E; Ince, FB; Ay, H; Önder, H; Kozak, HH; Ilgezdi, I; Bilgiç, AB; Akyol, S; Güngör, IL; Atmaca, MM; Sen, M; Yevgi, R; Akkas, SY; Yoldas, T; Atasoy, HT; Çinar, BP; Yilmaz, A; Genç, H; Kisabay, A; Ilik, F; Demirbas, H; Midi, I; Sirinocak, PB; Duman, T; Demir, T; Can, U; Yürekli, VA; Bozdogan, Z; Alioglu, Z; Kaya, D; Afsar, N; Gürkas, E; Toplutas, E; Degirmenci, E; Büyükserbetçi, G; Aydin, I; Epçeliden, MT; Turgut, N; Kale, N; Çoban, E; Yesilot, N; Ekizoglu, E; Kizek, Ö; Bilgili, Ö; Baydemir, R; Akçakoyunlu, M; Yilmaz, Z; Öztürk, S
    Objective: Atrial fibrillation (AF) is the most common directly preventable cause of ischemic stroke. There is no dependable neurology-based data on the spectrum of stroke caused by AF in Turkiye. Within the scope of NoroTek-Turkiye (TR), hospital-based data on acute stroke patients with AF were collected to contribute to the creation of acute-stroke algorithms.Materials and Methods: On May 10, 2018 (World Stroke Awareness Day), 1,790 patients hospitalized at 87 neurology units in 30 health regions were prospectively evaluated. A total of 929 patients [859 acute ischemic stroke, 70 transient ischemic attack (TIA)] from this study were included in this analysis.Results: The rate of AF in patients hospitalized for ischemic stroke/TIA was 29.8%, of which 65% were known before stroke, 5% were paroxysmal, and 30% were diagnosed after hospital admission. The proportion of patients with AF who received effective treatment [international normalization ratio >= 2.0 warfarin or non-vitamin K antagonist oral anticoagulants (NOACs) at a guideline dose] was 25.3%, and, either no medication or only antiplatelet was used in 42.5% of the cases. The low dose rate was 50% in 42 patients who had a stroke while taking NOACs. Anticoagulant was prescribed to the patient at discharge at a rate of 94.6%; low molecular weight or unfractionated heparin was prescribed in 28.1%, warfarin in 32.5%, and NOACs in 31%. The dose was in the low category in 22% of the cases discharged with NOACs, and half of the cases, who received NOACs at admission, were discharged with the same drug.Conclusion: NoroTekTR revealed the high but expected frequency of AF in acute stroke in Turkiye, as well as the aspects that could be improved in the management of secondary prophylaxis. AF is found in approximately one-third of hospitalized acute stroke cases in Turkiye. Effective anticoagulant therapy was not used in three-quarters of acute stroke cases with known AF. In AF, heparin, warfarin, and NOACs are planned at a similar frequency (one-third) within the scope of stroke secondary prophylaxis, and the prescribed NOAC dose is subtherapeutic in a quarter of the cases. Non-medical and medical education appears necessary to prevent stroke caused by AF.
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    Acute Stroke Management in Türkiye: Intravenous Tissue Plasminogen Activator and Thrombectomy NöroTek: Türkiye Neurology Single Day Study
    Topçuoglu, MA; Özdemir, AÖ; Arsava, EM; Günes, A; Aykaç, Ö; Gencer, ES; Çabalar, M; Yayla, V; Erdogan, HA; Erdogan, M; Acar, ZÖ; Giray, S; Kablan, Y; Tanriverdi, Z; Tekan, ÜY; Asil, T; Akpinar, ÇK; Yürekli, VA; Acar, B; Sirin, H; Güler, A; Baydemir, R; Akçakoyunlu, M; Öcek, L; Çetiner, M; Nazliel, B; Çaglayan, HB; Ongun, N; Eren, A; Arlier, Z; Cenikli, U; Gökçe, M; Bavli, S; Yaka, E; Özkul, A; Degirmenci, B; Aluçlu, U; Isikay, CT; Aslanbaba, E; Sorgun, M; Aytaç, E; Ay, H; Kunt, R; Senadim, S; Ünsal, YÖ; Eskut, N; Alioglu, Z; Yilmaz, A; Genç, H; Yilmaz, A; Milanoglu, A; Gürkas, E; Degirmenci, E; Bektas, H; Ilgezdi, I; Bilgiç, AB; Akyol, S; Güngör, L; Kale, N; Çoban, E; Yesilot, N; Ekizoglu, E; Kizek, Ö; Kursun, O; Yildiz, ÖK; Bolayir, A; Kisabay, A; Bastan, B; Acar, Z; Niflioglu, B; Güven, B; Kaya, D; Afsar, N; Yazici, D; Toplutas, E; Özkan, E; Ilik, F; Ince, FB; Büyükserbetçi, G; Önder, H; Karadeli, HH; Kozak, HH; Demirbas, H; Midi, I; Aydin, I; Epçeliden, MT; Atmaca, MM; Bakar, M; Sen, M; Turgut, N; Keskin, O; Akdogan, Ö; Emre, U; Bilgili, Ö; Sirinocak, PB; Yevgi, R; Akkas, SY; Yoldas, T; Duman, T; Özel, T; Ünal, A; Dora, B; Atasoy, T; Çinar, BP; Demir, T; Demir, T; Can, U; Aslan, Y; Bas, DF; Sener, U; Yilmaz, Z; Bozdogan, Z; Özdemir, G; Krespi, Y; Öztürk, S
    Objective: To reveal the profile and practice in patients with acute stroke who received intravenous tissue plasminogen activator (IV tPA) and/or neurointerventional therapy in Turkiye. Materials and Methods: On World Stroke Awareness Day, May 10, 2018, 1,790 patients hospitalized in 87 neurology units spread over 30 health regions were evaluated retrospectively and prospectively. Results: Intravenous tPA was administered to 12% of 859 cases of acute ischemic stroke in 45 units participating in the study. In the same period, 8.3% of the cases received neurointerventional treatment. The rate of good prognosis [modified Rankin score (mRS) 0-2] at discharge was 46% in 83 patients who received only IV tPA [age: 67 +/- 12 years; National Institutes of Health Stroke Scale (NIHSS): 12 +/- 6; hospital stay, 24 +/- 29 days]; 35% in 51 patients who underwent thrombectomy (MT) alone (age: 64 +/- 13 years; NIHSS: 14.1 +/- 6.5; length of hospital stay, 33 +/- 31 days), 19% in those who received combined treatment (age: 66 +/- 14 years; NIHSS: 15.6 +/- 5.4; length of hospital stay, 26 +/- 35 days), and 56% of 695 patients who did not receive treatment for revascularization (age: 70 +/- 13 years; NIHSS: 7.6 +/- 7.2; length of hospital stay, 21 +/- 28 days). The symptom-to-door time was 87 +/- 53 minutes in the IV treatment group and 200 +/- 26 minutes in the neurointerventional group. The average door-to-needle time was 66 +/- 49 minutes in the IV tPA group. In the neurothrombectomy group, the door-to-groin time was 103 +/- 90 minutes, and the TICI 2b-3 rate was 70.3%. In 103 patients who received IV tPA, the discharge mRS 0-2 was 41%, while the rate of mRS 0-1 was 28%. In 71 patients who underwent neurothrombectomy, the mRS 0-2 was 31% and mRS 0-1 was 18%. The door-to-groin time was approximately 30 minutes longer if IV tPA was received (125 +/- 107 and 95 +/- 83 minutes, respectively). Symptomatic bleeding rates were 4.8% in IV recipients, 17.6% among those who received only MT, and 15% in combined therapy. Globally, the hemorrhage rate was 6.8% in patients receiving IV tPA and 16.9% in MT. Conclusion: IV thrombolytic and neurointerventional treatment applications in acute ischemic stroke in Turkiye can provide the anticipated results. Heterogeneity has begun to be reduced in our country with the dissemination of the system indicated by the Directive on Health Services to be Provided to Patients with Acute Stroke.