Long-term prognosis of patients with heart failure: Follow-up results of journey HF-TR study population

Background: Despite advances in therapeutic management of patients with heart failure, there is still an increasing morbidity and mortality all over the world. In this study, we aimed to present the 3-year follow-up outcomes of patients included in the Journey HF-TR study in 2016 that has evaluated the clinical characteristics and management of patients with acute heart failure admitted to the hospital and present a national registry data. Methods: The study was designed retrospectively between November 2016 and December 2019. Patient data included in the previously published Journey HF-TR study were used. Among 1606 patients, 1484 patients were included due to dropout of 122 patients due to inhospital death and due to exclusion of 173 due to incomplete data. The study included 1311 patients. Age, gender, concomitant chronic conditions, precipitating factors, New York Heart Association, and left ventricular ejection fraction factors were adjusted in the Cox regression analysis. Results: During the 3-year follow-up period, the ratio of hospitalization and mortality was 70.5% and 52.1%, respectively. Common causes of mortality were acute decompensation of heart failure and acute coronary syndrome. Angiotensin receptor blockers, beta-blockers, statin, and sacubitril/valsartan were found to reduce mortality. Hospitalization due to acute decompensated heart failure, acute coronary syndrome, lung diseases, oncological diseases, and cerebrovascular diseases was associated with the increased risk of mortality. Implantation of cardiac devices also reduced the mortality. Conclusions: Despite advances in therapeutic management of patients with heart failure, our study demonstrated that the long-term mortality still is high. Much more efforts are needed to improve the inhospital and long-term survival of patients with chronic heart failure

Domestic cogeneration systems

Enerji, günümüz toplumunun ve ekonomisinin can damarıdır. Ekonomik, sosyal ve fiziksel refahımızın tümü, yeterli ve kesintisiz enerji üretimine bağlıdır. Enerji üretimi için kullanılan kojenerasyon sistemleri, elektrik ve ısı enerjisinin tek bir yakıt kaynağından kombine bir şekilde üretilmesi olarak tanımlanabilir. Konvansiyonel sistemlerde sadece elektrik üretimi %30-35 verim ile gerçekleşebilirken, atık ısının ısınma ve sıcak su ihtiyaçlarının karşılanması için kullanılmasıyla kojenerasyon sistemlerinin verimi %80’in üzerine çıkabilmektedir. Bu avantajlardan dolayı, gelişmiş ülkelerde, mikro kojenerasyon sistemleriyle binalarda enerji üretimi teşvik edilmektedir. Böylece bina sektörünü enerji tüketen değil enerji üreten duruma getirerek, arz güvenliğini de garanti altına alan politikalar benimsenmektedir. Bu çalışmada, evsel kojenerasyon sistemlerinin tanımı, çeşitleri ve farklı tür uygulamalar için seçim kriterlerini içeren detaylı bir literatür araştırması sunulmuştur. Yapılan araştırmalar neticesinde, uygun evsel kojenerasyon sisteminin seçiminde teknik (uygulama kapasitesi, ısı-güç oranı vb.), ekonomik (yatırım maliyeti, işletme maliyeti, geri ödeme süresi vb.) ve çevresel (karbonsuzlaştırma vb.) parametrelerin bir arada değerlendirilmesi gerektiği sonucuna varılmıştır.Energy is of great importance for today's society and economy. Our economic, social and physical well-being all depend on adequate and uninterrupted energy production. Cogeneration systems used for energy production can be defined as the combined production of electricity and heat energy from a single fuel source. While conventional systems can only produce electricity with 30-35% efficiency, the efficiency of cogeneration systems can exceed 80% by using waste heat to meet thermal demands. Because of these advantages, in developed countries, energy production in buildings with micro cogeneration systems has incentives. Policies are adopted to ensure the security of supply by making the building sector not consuming energy but being energy producers. In this study, a comprehensive literature review including the definition, types and selection criteria for different types of applications of domestic cogeneration systems is presented. As a result of the researches, it was concluded that technical (application capacity, heat-power ratio etc.), economic (investment cost, operating cost, payback period etc.) and environmental (decarbonisation etc.) parameters should be considered together in the selection of the appropriate domestic cogeneration system

LDA topic modeling on twitter data concerning immigrants and refugees

In this study, the attitudes and opinions of Twitter users in Turkey towards immigrants have been examined to see how people express their thoughts and opinions about immigrants in Turkey and whether there are any dominant and interpretable topics that emerge. After a comprehensive pre-preprocessing, latent themes in the tweets are discovered using the Latent Dirichlet Allocation (LDA) topic modeling methodology. As the result of this analysis, 14 topics have emerged as meaningful and interpretable. The study is done over a small dataset and is somewhat limited; however, the results can shed light on the perspectives of Twitter users towards immigrants and refugees

Management of Renal Artery Occlusion during Endovascular Aortic Repair

A 67-year-old man was admitted to the emergency unit with abdominal pain. An infrarenal aortic aneurysm with a diameter of 70 millimeters was detected by computed tomography. In the catheter laboratory, graft stents were implanted into the infrarenal aorta. Total occlusion of the right renal artery was seen in angiography. The graft stent was punctured with a 30 degrees angled Brockenbrough catheter, and another stent was implanted