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Öğe Early neonatal outcomes of very-low-birthweight infants in Turkey: A prospective multicenter study of the Turkish Neonatal Society(Public Library of Science, 2019) Koc E.; Demirel N.; Bas A.Y.; Isik D.U.; Hirfanoglu I.M.; Tunc T.; Cetinkaya M.Objective To investigate the early neonatal outcomes of very-low-birth-weight (VLBW) infants discharged home from neonatal intensive care units (NICUs) in Turkey. Material and methods A prospective cohort study was performed between April 1, 2016 and April 30, 2017. The study included VLBW infants admitted to level III NICUs. Perinatal and neonatal data of all infants born with a birth weight of ?1500 g were collected for infants who survived. Results Data from 69 NICUs were obtained. The mean birth weight and gestational age were 1137 ±245 g and 29±2.4 weeks, respectively. During the study period, 78% of VLBW infants survived to discharge and 48% of survived infants had no major neonatal morbidity. VLBW infants who survived were evaluated in terms of major morbidities: Bronchopulmonarydysplasia was detected in 23.7% of infants, necrotizing enterocolitis in 9.1%, blood culture proven late-onset sepsis (LOS) in 21.1%, blood culture negative LOS in 21.3%, severe intraventricular hemorrhage in 5.4% and severe retinopathy of prematurity in 11.1%. Hemodynamically significant patent ductus arteriosus was diagnosed in 24.8% of infants. Antenatal steroids were administered to 42.9% of mothers. Conclusion The present investigation is the first multicenter study to include epidemiological information on VLBW infants in Turkey. Morbidity rate in VLBW infants is a serious concern and higher than those in developed countries. Implementation of oxygen therapy with appropriate monitoring, better antenatal and neonatal care and control of sepsis may reduce the prevalence of neonatal morbidities. Therefore, monitoring standards of neonatal care and implementing quality improvement projects across the country are essential for improving neonatal outcomes in Turkish NICUs. © 2019 Koc et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Öğe Incidence and severity of retinopathy of prematurity in Turkey(BMJ Publishing Group, 2015) Bas A.Y.; Koc E.; Dilmen U.; Oguz S.S.; Ovali F.; Demirel N.; Zenciroglu A.; Tekin N.; Caner I.; Arslanoglu S.; Celik Y.; Öztürk A.; Cömert S.; Bulbul A.; Kultursay N.; Koklu E.; Duman N.; Koksal N.; Salihoglu O.; Coban A.; Demirel G.; Bolat F.; Gökalp A.; Satar M.; Ipek M.S.; Bas E.K.; Narli N.; Mutlu M.; Cetinkaya M.; Akman I.; Yigit S.; Narter F.; Sivasli E.; Ahrabi A.F.; Atalay Y.; Tanyeri B.; Arsan S.; Perk Y.; Ors R.; Tuncer O.; Ecevit A.; Oygur N.; Ozdemir O.M.; Hakan N.; Aliefendioglu D.; Acunas B.; Cetin H.; Ozek E.; Tunc T.; Turkmen M.; Aydemir C.; Takci S.Background: The purpose of this study was to estimate the current incidence of retinopathy of prematurity (ROP) and the need for treatment in preterm infants in Turkey. Methods: The study included preterm infants who had been screened for ROP between 2011 and 2013 in 49 neonatal intensive care units. Infants with birth weight (BW) ?1500 g or ?32 weeks' gestational age and those with BW >1500 g or >32 weeks' GA with an unstable clinical course were included. The incidence of any ROP or severe ROP and treatment modalities were determined. Results: The study population included 15 745 preterm infants: 11 803 (75%) with GA ?32 weeks, and 3942 (25%) with GA >32 weeks. Overall, 30% were found to have any stage of ROP, and 5% had severe ROP. Severe ROP was diagnosed in 8.2% of infants with BW ?1500 g and 0.6% of infants with BW >1500 g. Of all infants diagnosed with ROP, 16.5% needed laser photocoagulation, and 20 patients born at >32 weeks' GA required this treatment modality. Vitroretinal surgery was performed in 28 infants with severe ROP: 23 with GA ?28 weeks and 5 with GA 29-32 weeks. Conclusions: The findings of our study have the important implication that more mature babies are at risk of severe ROP requiring treatment. An effective programme for detecting and treating ROP should be established in Turkey.Öğe Investigation of radioactive and chemical contents of thermal waters; izmir Seferihisar region representative [Termal Sulari{dotless}n Radyoaktivite ve Kimyasal İçeriklerinin İncelenmesi; İzmir, Seferihisar Bölgesi Örnegi](2010) Camgöz B.; Saç M.M.; Bolca M.; Özen F.; Oruç Ö.E.; Demirel N.Agricultural terrains which are spontaneously irrigated by geothermal waters are affected by harmful contents of those waters especially boron. In the present study, Seferihisar-Doganbey Fault zone where thermal waters are exist, were selected as study area. In date interval July 2005-December 2007, water samples were collected in a month period from determined stations. Radon measurements in water samples were performed by using collector method. Also analysis of pH, EC (electrical conductivity), Na2CO3, Na+, K+, Ca+++Mg++, Cl-, HCO3-, SO4 = and B (Boron) have performed for those water samples. It is observed that radon changes for Cumali{dotless} Station in interval of 0.1Bq/L-16.67Bq/L, for Karakoç Station in interval of 0.29Bq/L-10.26Bq/L, for Doganbey1 Station in interval of 0.33Bq/L -56.36Bq/L, for Doganbey 2 Station in interval of 0.34Bq/L-7.7Bq/L. Unstable variations of radon values provide requirement of periodical radon measurements along the study.Öğe Length Based Assessments for European Pilchard Sardina pilchardus and European Anchovy Engraulis encrasicolus, in the İzmir Bay, Aegean Sea(Central Fisheries Research Inst, 2023) Tosunoğlu Z.; Mert Şenbahar A.; Demirel N.In the Mediterranean Sea, European pilchard Sardina pilchardus and European anchovy Engraulis encrasicolus are the most important small pelagic fish regarding their ecological role, and revenue. Here, we perform a comprehensive assessment of length-based methods for those small pelagics from İzmir Bay, Aegean Sea. Therefore, the Length-based Bayesian Estimator and Length-based Spawning Potential Ratio were used to evaluate the stock structure and status of two important small pelagic fish. The length range for Sardina pilchardus was from 7.1 cm to 17.3 cm in TL. The ratios Lmean/Lopt and Lc/Lc_opt were over 1, suggesting truncated length structure and fishing of not too small individuals. The proportion of mature individuals in the catch was far less than half (36%) suggesting that in these fisheries catch consists mostly of immature individuals. The length range for Engraulis encrasicolus was from 5 cm to 15 cm in TL. The ratios Lmean/Lopt and Lc/Lc_opt were over 1 (1.2 and 1.3, respectively), suggesting truncated length structure and fishing of large individuals. The proportion of mature individuals in the catch was over half (52%) suggesting that in these fisheries catch consists of adults. The estimated sizes at median 50% selectivity (SL50) for S. pilchardus (11.1 cm) was ?0.6 cm shorter than its lengths at 50% maturity (L50) of 11.7 cm, which indicates that a large proportion of the catch was immature. The median estimate of the spawning potential ratio was ?0.19 for S. pilchardus and ?0.48 for E. encrasicolus. © 2023, Central Fisheries Research Inst. All rights reserved.Öğe Natural radioactivity levels of great soil groups in Seferihisar Geothermal Region, Turkey(Springer Verlag, 2015) Içhedef M.; Saç M.M.; Camgöz B.; Bolca M.; Demirel N.; Oruç Ö.E.In this study, measurement of natural radioactivity and analyses of physical properties of soil were carried on great soil groups around the Seferihisar Geothermal Region. The radioactivity levels in soils were analyzed using scintillation gamma spectroscopy. The activity concentrations for 226Ra, 232Th, and 40K range from 7.1 to 32.0 Bq kg-1, 15.2 to 35.9 Bq kg-1 and 223.1 to 802.2 Bq kg-1, respectively. Obtained data was compared with average values given by UNSCEAR and the other studies. The radium equivalent activity (Raeq) in soil samples ranges from 42.2 to 144.7 Bq kg-1 which are lower than the suggested maximal admissible value of 370 Bq kg-1 recommended by OECD. In addition, the value of external exposure dose has been determined from the content of natural radionuclides in soil. The absorbed dose rates change between 20.6 and 70.9 nGy h-1 with a mean value of 46.7 nGy h-1 which is lower than the global average value of 55 nGy h-1. The annual effective dose rates varied from 25.2 to 87.0 µSv year-1 with an average value of 57.3 µSv year-1. Obviously, all the calculated values were lower than this value, and therefore the environment of Tuzla Fault can be regarded as an area with normal natural background radiation. © 2015, Springer-Verlag Berlin Heidelberg.Öğe Taxonomic studies on Coptosoma (Laporte, 1832) species (Heteroptera: Plataspidae) from Turkey(Asian Network for Scientific Information, 2007) Doganlar M.; Karsavuran Y.; Demirel N.Coptosoma (Laporte,1832) (Heteroptera: Plataspidae) species of Turkey were studied and their morphological characters were reviewed. The species of Coptosoma living in Turkey are: C. maurum seidenstuckeri Davidova-Vilimova and Štys, 1980, C. oenderi n.sp., C. putoni Montandon, 1898, C. costale Stål, 1876, C. mucronatum Seidenstücker, 1963, C. scutellatum (Geoffroy), 1785), C. lodosi n.sp. Two Indian species, C. indicum (Distant 1892) and C. noualhieri Montandon 1896 were described in new concepts. The variations on some characters between specimens from Turkey and the other sides were discussed and the new species, C. oenderi and C. lodosi, were described and their diagnostic characters were illustrated. © 2007 Academic Journals Inc.
