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Objective: Pulmonary thromboembolism (PTE) is a cardiovascular disease that occurs as a result of occlusion of the main pulmonary artery and/or its branches due to thrombus or another reason, requiring urgent diagnosis and treatment. Several scoring systems are used to predict mortality due to PTE. In our study, we aimed to show the superiority of the right ventricular/left ventricular (RV/LV) ratio in predicting 30-day mortality using simplified pulmonary embolism severity index (sPESI), shock index (SI), and computed tomography pulmonary angiography (CTPA). Methods: This was a retrospective, cross-sectional study. The study was conducted on patients diagnosed with acute PTE who were admitted to the Emergency Department of University of Health Sciences Turkey, Şişli Hamidiye Etfal Training and Research Hospital between January 01, 2017 and November 17, 2021. Demographic characteristics, clinical features, and vital parameters of the patients were recorded. SI, sPESI score, and RV/LV ratio were calculated. SI ≥1.0, sPESI ≥1.0, and RV/LV ≥1.0 were considered high risk. Results: A total of 205 patients, of which 55.6% were female, were included in the study. The mean age of the patients in our study was 67.1±16.6 (minimum-maximum =20.0-105.0). We found statistically significant differences in sPESI, SI, and RV/LV ratio between the mortality and survival groups (p<0.05). In our study, we accepted PESI [area under the curve (AUC) =0.776] as the gold standard and performed receiver operating characteristic curve analysis to determine mortality in sPESI (AUC =0.697), SI (AUC =0.654), and RV/LV ratio (AUC =0.605). We found that the sPESI, SI, and RV/LV ratios were moderately predictive and statistically significant, respectively (p<0.001, p<0.001, p=0.001, p=0.0028). Conclusion: We believe that CTPA can be used as a single procedure for diagnosis and risk stratification in patients with acute PTE. SI, sPESI, and RV/ LV ratios were found to be significant in predicting 30-day mortality. [ABSTRACT FROM AUTHOR]

Copyright of Turkish Journal of Geographical Sciences / Coğrafi Bilimler Dergisi is the property of Cografi Bilimler Dergisi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This study investigated erosion along the approximately 18.5 km coastal section of the Yeşilırmak Delta, a nationally important wetland, using remote sensing and Geographic Information Systems (GIS). Landsat-5 TM/Landsat-8 OLI satellite images from 1985 to 2022 (1985, 1990, 1996, 2001, 2006, 2011, 2017, and 2022) were used to determine shoreline changes. The shoreline determination process involved the combination of the normalized difference water index (NDWI) and the modified normalized difference water index (MNDWI). Annual rates of shoreline change were calculated using the linear regression rate (LRR) method within a 95% confidence level. Results showed a maximum erosion rate of -25.8 m/year in Zone-1, located in the western part of the Yeşilırmak River, and -7.7 m/year in Zone-2, situated in the eastern part. Erosion affected 61% of the delta, with 34% experiencing high-level erosion, 9% medium-level erosion, and 18% low-level erosion. Overlay analysis identified a total loss of 261.45 ha during 1985-2022, with 179.23 ha in Zone-1 and 82.22 ha in Zone-2. These findings enhance understanding of coastal dynamics by delineating erosion, accretion, and stable areas in the Yeşilırmak Delta. Furthermore, the study highlights the effectiveness of Landsat images and the LRR method in assessing shoreline changes. [ABSTRACT FROM AUTHOR]

Objective: Acute abdomen is a dangerous condition that necessitates attentive care. The etiology of acute abdomen is quite complex and alternative diagnostic methods are very valuable as it may indicate life-threatening conditions. The purpose of this study was to examine the role of physical examination and laboratory indicators in relation to surgical and medical treatment options in the emergency department (ED). Methods: This single-center retrospective study was conducted on 735 patients aged between 18 and 90 years admitted to the ED of our hospital between January 01, 2019, and January 01, 2020. Patients' demographics (age and gender), hospitalization data, presence of rebound and involuntary guarding, differential diagnosis, treatment approach (medical or surgical treatment), and laboratory parameters were analyzed. Results: The mean age of all patients was 45.5±18.6 years and male patients were dominant (51.1%). The most common diagnoses were acute appendicitis, acute gastroenteritis, and acute cholecystitis, respectively. Patients who had surgical treatment were significantly younger than those who received medical treatment (p<0.001). Rebound tenderness and involuntary guarding were more pronounced in the patients who received medical treatment. Inflammatory laboratory parameters were higher in patients who received surgical treatment. The presence of rebound tenderness, decreased age, elevated leukocyte, and neutrophil levels, as well as decreased red cell distribution width showed significant associations in favor of surgical treatment. Conclusion: Results suggest that the presence of rebound tenderness, elevated neutrophil, and decreased age may be predictive for the treatment modality in patients with acute abdomen. [ABSTRACT FROM AUTHOR]

Copyright of Turkish Journal of Geographical Sciences / Coğrafi Bilimler Dergisi is the property of Cografi Bilimler Dergisi and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Determining the bathymetry of shallow waters is important for managing coastal areas, river basins, and water resources. However, economic and practical difficulties in collecting bathymetric data cause disruptions in bathymetric studies. To overcome these challenges, a recent focus has involved the use of remote sensing technology as an alternative approach to the bathymetric mapping of shallow waters. This study uses Landsat-5 TM satellite imagery, which is free and open data, to determine the digital bathymetric model (DBM) of Atikhisar Reservoir. The study also uses the Normalized Difference Water Index (NDWI) and Modified Normalized Difference Water Index (MNDWI) to determine the reservoir’s surface area and the Stumpf algorithm to perform the bathymetric mapping. Satellite image-based DBMs were obtained using the linear regression equations created from the blue/green log-ratio values from the Landsat-5 TM satellite image and the values obtained from a 1/5000 scale digital bathymetric map for five different training reference point sets. The root mean square error (RMSE) values were calculated by comparing the DBMs with the test data. The model with the best results showed the regression determination coefficient (R2 ) to be 0.701 and the RMSE to be 2.1 m. These results reveal the potential of low-cost bathymetric map production for preliminary investigation and general evaluation in reservoirs with easy data processing from Landsat images. [ABSTRACT FROM AUTHOR]