Publications by authors named "Bayar M"

Objective: The aim of this study was to evaluate the correlation between changes in the inferior vena cava collapsibility index and subclavian vein collapsibility index in patients undergoing passive leg raising tests in the intensive care unit, considering that respiratory changes affecting the inferior vena cava may similarly affect the subclavian vein.

Methods: This single-center observational study was conducted on patients aged between 18 and 85 years who underwent passive leg raising in the intensive care unit. When the patient was 45° above the bed, the inferior vena cava and subclavian vein were displayed using ultrasonography; subclavian vein collapsibility index and inferior vena cava collapsibility index values were calculated.

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Aim: To evaluate the relationship between the surgical techniques, the waiting time for surgery, postoperative distance between the graft-bone margin and the percentage of bone resorption, we analyzed patients who underwent cranioplasty. Cranioplasty is a necessary surgery to preserve brain tissue and provide an appropriate microenvironment.

Material And Methods: In this study, patients who underwent autologous bone grafting after decompressive craniectomy by the Neurosurgery Clinic of University of Health Sciences Ankara Training and Research Hospital between 2018 and 2021 were examined.

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Objective: Besides its morbidity and mortality all over the world, SARS-CoV-2 infection maintains its importance with prolonged symptoms after acute disease. The post-infectious period including a heterogeneous group of symptoms is named . This study aimed to describe persisting symptoms three months after COVID-19 and risk factors associated with .

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Objective: We aimed to investigate sleep disorders in patients with epilepsy (PWE) and to investigate the effects of sleep disorders on quality of life.

Methods: In our multicenter study conducted in Turkey, 1358 PWE were evaluated. The demographic and clinical data of the patients were recorded.

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Background: Vaccines against coronavirus disease-19 (COVID-19) have been effective in preventing symptomatic diseases, hospitalizations, and intensive care unit (ICU) admissions. However, data regarding the effectiveness of COVID-19 vaccines in reducing mortality among critically ill patients with COVID-19 remains unclear.

Aims: To determine the vaccination status and investigate the impact of the COVID-19 vaccine on the 28-day mortality in critically ill patients with COVID-19.

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Aim: The present study aims to establish the role of serum CGRP and SP levels in the disease pathophysiology in patients with dialysis headache not accompanied by primary or secondary headaches, and also whether there is a correlation between these vasoactive peptides and the severity of headache.

Method: This study was designed as prospective and multicenter. A total of 30 dialysis headache patients and 30 patients without headache as the control group in the Nephrology outpatient clinics which implement similar dialysis procedures were included in the study.

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Objectives: COVID-19 infection is associated with an increased risk of acute ischemic stroke (AIS). Although the underlying mechanisms are largely unknown, autoimmunity has been implicated as a potential role player.

Methods: To investigate the presence and clinical impact of neuronal cell surface antibodies in COVID-19 associated AIS, patients with COVID-19 pneumonia and AIS ( = 30), COVID-19 pneumonia without AIS ( = 32) and AIS without COVID-19 infection ( = 27) were recruited.

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Anencephaly, the most severe form of neural tube defect, has no known cure, and in most cases, patients die before or shortly after birth. To date, no surgical intervention has been reported in the management of anencephaly. This study presents a case of dichorionic-diamniotic twin pregnancy in which 1 twin was anencephalic and describes the surgical management of this complex case.

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Aim: To investigate the relationship among the modified Rankin scores of patients who had intracerebral hematomas at discharge, demographic characteristics of the patients, and the characteristics of the hematoma.

Material And Methods: In this study, patients diagnosed with intracerebral hematoma and treated at the Ministry of Health Ankara Training and Research Hospital Neurosurgery Clinic between January 2010 and December 2020 were examined retrospectively. The age, gender, comorbidity, anticoagulant?antiaggregant use, and Glasgow Coma Scale score of the patients were obtained from hospital records.

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Background: Acute kidney injury (AKI) is a potential complication after restricted fluid therapy for major surgery. The aim of this study was to evaluate the incidence of AKI for living liver donor hepatectomy in which applied intraoperative protocolized fluid restriction was used targeting a low central venous pressure (CVP) level with high pulse pressure variation (PPV) and systolic pressure variation (SPV).

Material And Methods: Living liver donors were admitted for this retrospective observational study.

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Background And Purpose: Prevalence of acute ische-mic stroke (AIS) is increased in patients with coronavirus disease 2019 (COVID-19). A proposed hypothesis is increased virus-induced propensity to hypercoagulation resulting in arterial thrombosis. Our aim was to provide evidence regarding the involvement of neutrophil extracellular trap (NET) formation (NETosis) in COVID-19 related AIS.

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COVID-19 has been associated with central nervous system manifestations; however, cerebral venous thrombosis is rarely reported. A 34-year-old woman was admitted to the hospital with headache and recurrent seizures; she was recently discharged after COVID-19 pneumonia. Cranial magnetic resonance imaging and magnetic resonance venography showed cortical vein thrombosis in the right frontal lobe.

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We have developed and made accessible for multidisciplinary audience a unique global dataset of the behavior of political actors during the COVID-19 pandemic as measured by their policy-making efforts to protect their publics. The dataset presents consistently coded cross-national data at subnational and national levels on the daily level of stringency of public health policies by level of government overall and within specific policy categories, and reports branches of government that adopted these policies. The data on these public mandates of protective behaviors is collected from media announcements and government publications.

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Aim: To discuss four different materials that are frequently used in cranioplasty, and to reveal their advantages and disadvantages.

Material And Methods: We retrospectively reviewed 85 of our cranioplasty surgeries between 2016 and 2019. Reconstruction surgeries were excluded from our study due to craniofacial trauma.

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Aim: Sleep spindles have an important role in the pathophysiology and perception of sleep. We aimed to investigate the link between sleep spindles and microstructural architecture of sleep in regard to psychiatric characteristics in paradoxical insomnia.

Method: A total of 40 participants (20 with paradoxical insomnia, 20 healthy controls) were included in the study.

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Background And Aim: Many environmental factors exist that influence embryonic development which is missing in the poultry industry, such as light in incubation facilities or hatcheries. Light plays an important role in the growth and development of chick embryos, whereas dark environments can lead to hatching failure or embryo distortion. Therefore, this study aimed to demonstrate the importance of light and its various colors on the growth and development of broiler chick embryos.

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Corticosteroids are commonly used in lymphoma patients, and findings in favor of esophageal involvement in 18F-FDG PET-CT should be considered suspicious and definitely be confirmed by biopsy. We describe a 58-year-old lady with diffuse large B-cell lymphoma and central nervous system involvement having an increased metabolism in the distal esophagus with 18F-FDG PET/CT, which was consistent with esophageal candidiasis, most probably due to prolonged use of dexamethasone. Esophageal candidiasis can be misdiagnosed as malignancy with a high SUVmax and may lead to difficulties while managing these patients.

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Diagnosis of the syndrome of headache and neurological deficits with cerebrospinal fluid (CSF) lymphocytosis (HaNDL) is based on clinical features, and no diagnostic biomarkers are available. We present a case presenting with characteristic features of HaNDL and an MRI lesion in the splenium of corpus callosum. CSF neurofilament light chain (NFL) levels were assessed in this patient together with 7 additional HaNDL patients, 18 multiple sclerosis (MS) patients, and 15 primary headache patients.

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Aim: In this study we tried to determine the possible neuroprotective effects of simvastatin in a rat model of Spinal Cord Injury (SCI) with the help of biochemical and histopathological tests.

Methods: Rats were divided into 5 groups:1) SCI control, 2) Sham operated, 3) SCI with 10 mg/kg intraperitoneal simvastatin, 4) SCI with 10 mg/kg oral simvastatin, 5) SCI with 10 mg/kg subcutaneous simvastatin. After the treatment period, all rats were sacrificed; their blood and spinal cord samples were taken for biochemical and histopathological assessment.

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Introduction: Molecular profiling is considered a standard of care in advanced NSCLC. A comprehensive next-generation sequencing panel can discover somatic or germline mutations that are new druggable molecular alterations. However, the phenotypic and potential therapeutic relevance of mutation in NSCLC remains poorly defined.

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Aim: To investigate the effect of alpha lipoic acid on cerebrospinal fluid (CSF) osmolarity and brain tissue water ratio in a rabbit model of traumatic brain injury.

Material And Methods: Using a previously established model of traumatic brain injury using liquid nitrogen, 36 New Zealand rabbits were randomized into six groups (three treatment groups, a no trauma/no treatment group, a trauma/no treatment group, and a no trauma/treatment group). The treatment groups were administered intravenous alpha lipoic acid at different times of the experiment.

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Alzheimer's disease (AD) is the main cause of dementia in elderly. Increasing life expectancy is behind the growing prevalence of AD worldwide with approximately 45 million cases currently documented and projection studies suggesting a triplication of this number by 2050. Mexico does not have an accurate AD registry, but 860,000 cases were reported in 2014 and the prediction reaches 3.

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In this paper, human security-related causes of large-scale forced migration (LSFM) in Africa are investigated for the period 2011-2017. As distinct from the conventional understanding of (national) security, human security involves economic, public health, environmental and other aspects of people's wellbeing. Testing various hypotheses, we have found that civil and interstate conflicts, lack of democracy and poverty are the most important drivers of mass population displacements, whereas climate change has an indirect effect on the dependent variable.

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