Browsing by Author "Koyuncu, Murat"

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Comparison of Ischemia Modified Albumin Levels with Total Oxidant, Total Antioxidant Status, Oxidative Stress Index in Carbon Monoxide Poisoning
(2014) Durukan, Polat; Koyuncu, Murat; Salt, Omer; Kavalci, Cemil; Ozkan, Seda; Muhtaroglu, Sebahattin; Kavalci, Gulsum; Ozdemir, Caglar; Duzgun, Ali; Ikizceli, Ibrahim; https://orcid.org/0000-0003-2529-2946; AGG-1308-2022
Aim: The most common cause of death in CO poisoning is ventricular arrhythmias due to tissue hypoxia. In this study we aimed to investigate the relationship between severity of poisoning and Total Oxidant Status (TOS), total antioxidant status (TAS) and oxidative stress index (OSI) and also change in the levels of ischemia modified albumin (IMA) and neutrophil gelatinase-associated lipocalin (NGAL) over time in the patients with CO poisoning. Material and methods: This study was performed at Erciyes University Faculty of Medicine, Department of Emergency Medicine. Fifty patients between the ages of 18-65 who were diagnosed CO poisoning in the emergency department were included in the study. As a control group 30 adult individuals with no history of any disease were included in the study. Ischemia modified album, NGAL, OSI, TOS and TAS levels were studied. Mann-Whitney U test was using to compare of control and patient group. The Wilcoxon test was used to compare the change in TAS, TOS, OSI, IMA, NGAL, COHb and lactate. p<0.05 was considered as statistically significant. Results: When the 0th hour levels of Lactate, TOS, OSI, and IMA and TAS of the patient group were compared to the control group, there was a significant difference between these groups (p <0.05). There was no significant difference in terms of the NGAL level (p> 0.05). When 0th, 3rd, 6th, 12 and 24th hrs TAS, TOS, OSI, IMA, NGAL and lactate levels compared with each other, there was no difference between them (p>0.05). Conclusion: The levels of IMA, TOS, TAS and OSI were detected high in CO poisoning, but it is not meaningful in evaluating the effectiveness of treatment.
Effects of Drug Use on the Development of Diabetic Ketoacidosis
(2015) Koyuncu, Murat; Ozturk, Derya; Altinbilek, Ertugrul; Yapar, Nikola; Karakisa, Halit; Kavalci, Cemil; Ikizceli, Ibrahim; 0000-0002-9825-4716; 0000-0003-2529-2946; 0000-0003-4201-8850; 0000-0001-7446-1641; D-1981-2019; AGG-1308-2022; AAB-1368-2019
Introduction: Diabetic Ketoacidosis (DKA) is a condition in which the body must use adipose and protein deposits as intracellular energy sources due to a lack of insulin. In the current study, we aimed to investigate the effects of drug use on the development of DKA and on clinical parameters in patients who presented to the Emergency Department (ED) with the diagnosis of DKA. Materials and methods: This study was retrospectively conducted in Sisli Etfal Training and Research Hospital between October 1, 2011 and March 31, 2013. The following parameters were recorder for each patient: age, gender, complaints, history of drug use, cause of DKA, pH, HCO3 levels, time spent in the ED, treatment outcomes and hospitalization durations. Results: The mean age of the patients was 42.61 +/- 8.6 years, and 58% (n=43) of them were female. 20.3% (n=15) of the patients were drug free. 63.5% (n=47) of the patients were followed up with in the ward, 12 (16.5%) were followed up with in the ED and 20% (n=15) were followed up with in the intensive care unit (ICU). The mean duration of stay in the ED was 15 hours, and the mean hospitalization time was 10 days. The mortality rate was 2.7%(n=2). When the effects of the drug use on DKA were examined, there were no statistically significant differences between the patients in terms of acidosis condition, mortality, clinic of hospitalization and durations of follow-up and treatment (p>0.05). The most important factor causing ketoacidosis was the presence of infection (40.5%, n=30), while the most common symptom was nausea/vomiting (51.4%, n=38). Conclusion: We observed that in patients with DKA, drug use does not affect mortality and morbidity.
An Intelligent Multimedia Information System for Multimodal Content Extraction and Querying
(2018) Yazici, Adnan; Koyuncu, Murat; Yilmaz, Turgay; Sattari, Saeid; Sert, Mustafa; Gulen, Elvan; https://orcid.org/0000-0002-7056-4245; D-3080-2015
This paper introduces an intelligent multimedia information system, which exploits machine learning and database technologies. The system extracts semantic contents of videos automatically by using the visual, auditory and textual modalities, then, stores the extracted contents in an appropriate format to retrieve them efficiently in subsequent requests for information. The semantic contents are extracted from these three modalities of data separately. Afterwards, the outputs from these modalities are fused to increase the accuracy of the object extraction process. The semantic contents that are extracted using the information fusion are stored in an intelligent and fuzzy object-oriented database system. In order to answer user queries efficiently, a multidimensional indexing mechanism that combines the extracted high-level semantic information with the low-level video features is developed. The proposed multimedia information system is implemented as a prototype and its performance is evaluated using news video datasets for answering content and concept-based queries considering all these modalities and their fused data. The performance results show that the developed multimedia information system is robust and scalable for large scale multimedia applications.
Successful application of acute cardiopulmonary resuscitation
(2015) Ozturk, Derya; Altinbilek, Ertugrul; Koyuncu, Murat; Sonmez, Bedriye Muge; Caltili, Cilem; Ikizceli, Ibrahim; Kavalci, Ibrahim; Kavalci, Cemil; Kavalci, Gulsum
Objective: To compare the quality and correct the deficiencies of cardiopulmonary resuscitation (CPR) procedures performed in patients who developed cardiopulmonary arrest before or after Emergency Department admission. Methods: This study was conducted on patients who were applied CPR at Sisli Etfal Training and Research and Research Hospital, Emergency Department between 01 January 2012 and 31 December 2012. Chi-square and Mann-Whitney U test were used to compare the patients' data. The study data were analyzed in SPSS 18.0 software package. A P value less than 0.05 was considered statistically significant. Results: A total of 155 patients who were applied CPR were included in the analysis. Among the study patients, seventy eight (50.3%) were brought to Emergency Department after developing cardiopulmonary arrest while 77 (49.7%) developed cardiopulmonary arrest at Emergency Department. The mean age of the study population was (66 +/- 16) years and 64% of the patients were male. The initial rhythms of the CPR-applied patients were different (P < 0.05). There were no significant differences between the groups with respect to the treatment protocols or CPR responses (P > 0.05). The CPR response time was longer in ED (P < 0.05). The survival rate was lower in the trauma patients who developed cardiopulmonary arrest at ED (P < 0.05). Conclusions: The scientific data obtained in this study suggest that an early response and therapy improves outcomes in CPR procedure.
Visual and Auditory Data Fusion for Energy-Efficient and Improved Object Recognition in Wireless Multimedia Sensor Networks
(2019) Koyuncu, Murat; Yazici, Adnan; Civelek, Muhsin; Cosar, Ahmet; Sert, Mustafa; 0000-0002-7056-4245; AAB-8673-2019
Automatic threat classification without human intervention is a popular research topic in wireless multimedia sensor networks (WMSNs) especially within the context of surveillance applications. This paper explores the effect of fusing audio-visual multimedia and scalar data collected by the sensor nodes in a WMSN for the purpose of energy-efficient and accurate object detection and classification. In order to do that, we implemented a wireless multimedia sensor node with video and audio capturing and processing capabilities in addition to traditional/ordinary scalar sensors. The multimedia sensors are kept in sleep mode in order to save energy until they are activated by the scalar sensors which are always active. The object recognition results obtained from video and audio applications are fused to increase the object recognition performance of the sensor node. Final results are forwarded to the sink in text format, and this greatly reduces the size of data transmitted in network. Performance test results of the implemented prototype system show that the fusing audio data with visual data improves automatic object recognition capability of a sensor node significantly. Since auditory data requires less processing power compared to visual data, the overhead of processing the auditory data is not high, and it helps to extend network lifetime of WMSNs.