Sehnaz Olgun yildizeli

Prof. Dr. Sehnaz Olgun yildizeli

orcid

Research Focus & Metrics

Academic Career Length

12Years (2015-Present)

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

Representative Publications

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31 July 2020 in The Journal of Infection in Developing Countries
Verified
Journal Article
Open access
PDF file
RSRabia Can Sarinoglu
Rabia Can Sarinoglu
USUluhan Sili
Uluhan Sili
EEEmel Eryuksel
Emel Eryuksel
SYSehnaz Olgun yildizeli
Sehnaz Olgun yildizeli
CCCagatay Cimsit
Cagatay Cimsit
AYAysegul Karahasan Yagci
Aysegul Karahasan Yagci
Introduction: The novel coronavirus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the coronavirus disease 2019 (COVID-19). First COVID-19 case was detected in March, 10, 2020 in Turkey and as of May, 18, 2020 148,067 cases have been identified and 4096 citizens have died. Tuberculosis (TB) is a worldwide public health concern, incidence of tuberculosis (per 100,000 people) in Turkey was reported at 14, 1 in 2018. During pandemic COVID-19 was the main concern in every clinic and as we discuss here overlapping respiratory diseases may result in delaying of the diagnosis and treatment. Methodology: There were 4605 respiratory samples examined between March 23 and May 18 for COVID-19 and 185 samples for Mycobacterium tuberculosis in our laboratory. The Xpert Ultra assay was performed for the diagnosis of pulmonary tuberculosis; SARS-CoV-2 RNA was determined by real-time PCR (RT-PCR) analysis in combined nasopharyngeal and deep oropharyngeal swabs of suspected cases of COVID-19. Results: Both of SARS-CoV-2 and M. tuberculosis tests were requested on the clinical and radiological grounds in 30 patients. Here we discussed 2 patients who were both COVID-19 and TB positive. One patient already diagnosed with tuberculosis become COVID-19 positive during hospitalization and another patient suspected and treated for COVID-19 received the final diagnosis of pulmonary TB and Human Immunodeficiency Virus infection. Conclusions: We want to emphasize that while considering COVID-19 primarily during these pandemic days, we should not forget one of the “great imitators”, tuberculosis within differential diagnoses.

10 January 2022 in British Journal of Clinical Pharmacology
Verified
Journal Article
Open access
PDF file
RGRezzan Gülhan
Rezzan Gülhan
EEEmel Eryüksel
Emel Eryüksel
MOMedine Gülçebi İdRiz Oğlu
Medine Gülçebi İdRiz Oğlu
YÇYekta Çulpan
Yekta Çulpan
AHAylin Toplu Hocaoğlu
Aylin Toplu Hocaoğlu
FOFiliz Onat
Filiz Onat
This prospective observational study describes the pharmacokinetic characteristics of favipiravir in adult patients hospitalized for mild to moderate COVID‐19 with a positive RT‐PCR test. Favipiravir was administered for 5 days, with a loading dose of 3200 mg and a maintenance dose of 1200 mg/day. Serial blood samples were collected on Day 2 and Day 4 of the therapy. Laboratory findings of the patients (n = 21) and in‐hospital mortality were recorded. Favipiravir concentrations exhibited substantial variability and a significant decrease during the treatment of COVID‐19. The median favipiravir trough concentration (C0‐trough) on Day 2 was 21.26 (interquartile range [IQR], 8.37–30.78) μg/mL, whereas it decreased significantly to 1.61 (IQR, 0.00–6.41) μg/mL on Day 4, the area under the concentration–time curve decreased by 68.5%. Day 2 C0‐trough of female patients was higher than male patients. Our findings indicate that favipiravir concentrations show significant variability during the treatment of COVID‐19 and therapeutic drug monitoring may be necessary to maintain targeted concentrations.

30 September 2019 in Tuberk Toraks
Verified
Journal Article
Open access
UKUmut Sabri Kasapoglu
Umut Sabri Kasapoglu
SYSehnaz Olgun yildizeli
Sehnaz Olgun yildizeli
HAHuseyin Arikan
Huseyin Arikan
AEAyşen ERER
Ayşen ERER
FKFeyyaz Kabadayi
Feyyaz Kabadayi
SKSAİT KARAKURT
SAİT KARAKURT
Identifying the prognostic factors for patients with acute pulmonary embolism (APE) play a critical role in determining of the treatment strategy and to reduce mortality. The aim of this study is to evaluate the prognostic value of Neutrophil to Lymphocyte Ratio (NLR) and compare NLR with other prognostic factors in APE. We retrospectively examined 550 cases of acute pulmonary embolism diagnosed by spiral computed tomographic angiography. A receiver operating characteristics (ROC) curve was used to determine the sensitivity and specificity of parameters and the optimal cut-off value for predicting mortality. Significance of each prognostic factors selected by univariate analysis confirmed using Cox regression model. Baseline NLR, Platelet to Lymphocyte Ratio (PLR), N-terminal pro-Brain Natriuretic Peptide (NT-proBNP), and D-dimer values respectively were found significantly high in patients who died within 30 days (p< 0.05). Patients with high-risk status and sPESI > 2 points had a significantly higher short-term mortality rate (p< 0.05). Short-time mortality was found significantly higher in patients with NLR > 7.3 (p< 0.05). Cox regression analysis indicated that patient risk status and sPESI score were independent prognostic factors (p< 0.05). However, NLR was not found as a predictor of mortality in APE (p> 0.05). After the subgroup analysis of the study, in patients without comorbid diseases NLR, patient’s risk status, sPESI score were found the predictor of mortality in APE (p< 0.05). NLR maybe a useful prognostic factor for patients without comorbid diseases in short time of mortality in APE.

29 July 2023 in Cureus
Verified
Journal Article
Open access
PDF file
SYSehnaz Olgun yildizeli
Sehnaz Olgun yildizeli
DKDerya Kocakaya
Derya Kocakaya
YSYüsra Hafza Saylan
Yüsra Hafza Saylan
GTGözde Tastekin
Gözde Tastekin
SYSudenur Yıldız
Sudenur Yıldız
SKSait Karakurt
Sait Karakurt
Introduction As of December 2019, the COVID-19 infection had spread rapidly across the globe, causing a pandemic. Although the virus primarily affects the respiratory and circulatory systems, neuropsychiatric disorders have been reported in a significant number of infected individuals. The aim of this study is to identify anxiety, depression, and sleep disturbances in the early post-COVID period, as well as potential risk factors. Method Symptomatic cases whose COVID-19 diagnosis was confirmed by polymerase chain reaction (PCR) positivity within the previous three months were evaluated in the COVID-19 follow-up clinic, where they were observed for at least four weeks after the diagnosis. Cases with no suspicious symptoms and no documented PCR positivity were selected as the control group. All participants completed the Hospital Anxiety Depression Scale (HADS) questionnaire and the Pittsburgh sleep quality questionnaire. The laboratory parameters of hospitalized patients with infection were recorded. Results A total of 283 patients were included in the study. While the median age of 144 patients with COVID-19 infection was 44 years, and 104 of them (72.2%) were female, the median age of the controls without COVID-19 infection was 52 years, and 65 of them (46.8%) were female. About 89 (61.8%) of the 144 patients with COVID-19 infections were hospitalized. When the results of the applied HADS questionnaire were analyzed, the median total value of all study participants was 10 points, whereas it was 13 in cases with COVID-19 and nine in those who did not have it (p<0.001). Taking into account the subgroups of the anxiety and depression questionnaires, both results are statistically significantly higher (p<0.001 and p=0.022, respectively) in post-COVID patients. When the hospitalization status of COVID-19 patients was compared, there was no difference in the development of anxiety (p=0.23), but depression (p<0.024) and poor sleep quality (p<0.001) were prevalent in hospitalized patients. The median PSQI score of the entire study population was five points, while it was seven points in cases with COVID-19 infection and four points in cases who did not have it (p<0.001). Sleep latency (p<0.003), sleep disturbances (p<0.001), and daytime dysfunction (p<0.001) were statistically significantly worse in COVID-19-infected patients. Female gender (p<0.01) and the presence of past anxiety-depression symptoms (p<0.013) were found to be as risk factors in patients with infection. The correlation between the total HADS score, the PSQI, and the results of the complete blood count and biochemical analysis at the time of diagnosis in hospitalized patients was also investigated. CRP (CI 0.26-0.58) p<0.001 vs (CI 0.09-0.45) p=0.004 and ferritin (CI 0.05-0.43) p=0.017 vs (CI 0.01-0.40) p=0.047 exhibited a positive correlation. Similarly, lymphocyte count (CI −0.65 to −0.37) p<0.001 vs (CI −0.39 to −0.01) p<0.001 and lymphocyte percentage (−0.57 to −0.24) p=0.001 vs (−0.65 to −0.37) p=0.039 were negatively correlated. Conclusion Early post-infection anxiety, depression, and sleep disturbances increased significantly in COVID-19 patients. Female gender and previous symptoms of anxiety and depression are risk factors, and inpatient treatment increases depression and poor sleep quality. High HADS and poor sleep quality scores are positively correlated with inflammatory parameters and should be evaluated in post-infection in particular.

30 April 2022 in Nutrition in Clinical Practice
Verified
Journal Article
Closed access
BCBusra Can
Busra Can
NDNurdan Şentürk Durmuş
Nurdan Şentürk Durmuş
SYSehnaz Olgun yildizeli
Sehnaz Olgun yildizeli
DKDerya Kocakaya
Derya Kocakaya
BIBirkan Ilhan
Birkan Ilhan
ATAsli Tufan
Asli Tufan

20 November 2018 in The Aging Male
Verified
Journal Article
Closed access
SYSehnaz Olgun yildizeli
Sehnaz Olgun yildizeli
ATAslı Tufan
Aslı Tufan
EBEmine Bozkurtlar
Emine Bozkurtlar
HAHüseyin Arıkan
Hüseyin Arıkan
DKDerya Kocakaya
Derya Kocakaya
SKSait Karakurt
Sait Karakurt
Aim: Complication rates are low and endobronchial ultrasound guided needle aspiration (EBUS-TBNA) is generally regarded as a safe procedure, but there is a very limited number of studies evaluating the efficacy and safety of the procedure in advanced ages. The aim of this study is to assess the safety and performance outcomes of EBUS-TBNA in elderly. Methods: It was a retrospective observational study; patients who received EBUS-TBNA between September 2016 and January 2018 were evaluated. We analyzed patient’s characteristics, doses of midazolam, and lidocaine used, regions of lymph node biopsies, and complications. Also, functionality and general physical status of patients over 65 years of age were evaluated. Results: During study period 132 cases of EBUS-TBNA were evaluated. 39 (29.5%) cases were aged 70 years, and over. There were more comorbidities in older group. Performance status of older group was worse. Furthermore, when evaluated according to American College of Cardiology (ACC)/American Heart Association (AHA) and American Society of Anesthesiologists (ASA), the older group was found to be composed of the riskier patients. When patients aged between 65 and 69, and over 70 compared, older patient’s Barthel, EQ 5-D, SGA, and G8 scores were found to be worse. Despite that, there was no difference in the frequency, and types of complications between both groups. Diagnostic performance was not different between age groups. Conclusions: Independent from comorbidities, general health status, and functionality EBUS-TBNA procedure in 70-year-old and over patients is a safe minimally invasive procedure.