Türkiye'de koroner yoğun bakım ünitelerindeki hastane içi mortalite (MORCOR-TURK) çalışmasında hasta temel karakteristikleri ve öngördürücüleri

OBJECTIVE: The MORtality in CORonary Care Units in Türkiye (MORCOR-TURK) trial is a national registry evaluating predictors and rates of in-hospital mortality in coronary care unit (CCU) patients in Türkiye. This report describes the baseline demographic characteristics of patients recruited for the MORCOR-TURK trial. METHODS: The study is a multicenter, cross-sectional, prospective national registry that included 50 centers capable of 24-hour CCU service, selected from all seven geographic regions of Türkiye. All consecutive patients admitted to CCUs with cardiovascular emergencies between September 1-30, 2022, were prospectively enrolled. Baseline demographic characteristics, admission diagnoses, laboratory data, and cardiovascular risk factors were recorded. RESULTS: A total of 3,157 patients with a mean age of 65 years (range: 56-73) and 2,087 (66.1%) males were included in the analysis. Patients with arterial hypertension [1,864 patients (59%)], diabetes mellitus (DM) [1,184 (37.5%)], hyperlipidemia [1,120 (35.5%)], and smoking [1,093 (34.6%)] were noted. Non-ST elevation myocardial infarction (NSTEMI) was the leading cause of admission [1,187 patients (37.6%)], followed by ST elevation myocardial infarction (STEMI) in 742 patients (23.5%). Other frequent diagnoses included decompensated heart failure (HF) [339 patients (10.7%)] and arrhythmia [272 patients (8.6%)], respectively. Atrial fibrillation (AF) was the most common pathological rhythm [442 patients (14%)], and chest pain was the most common primary complaint [2,173 patients (68.8%)]. CONCLUSION: The most common admission diagnosis was acute coronary syndrome (ACS), particularly NSTEMI. Hypertension and DM were found to be the two leading risk factors, and AF was the most commonly seen pathological rhythm in all hospitalized patients. These findings may be useful in understanding the characteristics of patients admitted to CCUs and thus in taking precautions to decrease CCU admissions

Investigation of effects of oil additive on friction coefficient for statically loaded radial journal bearings

In this study, variation of friction coefficient under static loading on a radial journal bearing (Chrysler connecting rod bearing) is studied both theoretically and experimentally. The theoretical section of the study was conducted with the Kiss-SOFT program while the experimental part was conducted on a TM 290 hydrodynamic radial journal bearing experimental set. In this study we examine the effect of bearing loads and different proportion of poured additive in alkali-based lubrication oil on friction coefficient. Friction coefficient was calculated from the frictional torque. Consequently, theoretically calculated and experimentally tested friction coefficients were compared and the optimum oil additive ratio was determined

Tel haddeleme tekniği ile Cu/Mgb2 süper iletken tellerin üretimi ve üretim parametrelerinin ürün özelliklerine etkilerinin incelenmesi

*Proje No: 114M783Bu projede, tüp içerisinde toz (Powder in Tube, PIT) yöntemi ile hazırlanmış Cu/MgB2 kompozit yapıların, tel haddeleme tekniği kullanılarak süper iletken tellere dönüştürülmesi ve üretim parametrelerinin ürün özelliklerine etkisi araştırılmıştır. Bu amaçla, farklı çaplarda (min. 0.55 mm) tek ve çok özlü teller, bariyer malzemesi kullanılmadan ve kullanılarak üretilmiştir. Farklı geometrilerdeki bu tellerin üretimi, bakır tüp içerisine açılan deliğe MgB2 tozlarının doldurulmasıyla hazırlanan kompozit biletlerin ekstrüzyonuyla üretilen filmaşinler veya doğrudan bu kompozit biletler kullanılarak, haddeleme işlemi ile yapılmıştır. Haddeleme öncesi üretim aşamalarında, malzmenin plastik deformasyon kabiliyetinin arttırılması ve ürün özelliklerinin bozulmaması için, gerek görülen durumlarda ara tavlamalar yapılmıştır.In this project, the transforming Cu/MgB2 composite wire rods, which are prepared with PIT (Powder -in-Tube) technique, into the Cu/MgB2 superconductor wires by using wire rolling technique and the effect of manufacturing parameters on product characteristics have been investigated. For this purpose, monofilament and multifilament wires having various diameters (min. 0.55 mm) have been produced with and without barrier material. Production of these wires which have different geometries, were performed using either the wire rods which are prepared with PIT (Powder -in-Tube) technique and manufactured by extrusion process, or used directly with the composite wire rods which are prepared with PIT technique followed by wire rolling. Before the wire rolling, when there is a necessity, intermediate annealing has been performed in order to improve the plastic deformation properties of materials and to prevent deterioration of properties of the product

Theoretical and experimental determination of friction coefficient on statically loaded radial journal bearings

Bu çalışmada, statik yük altındaki bir radyal kaymalı yatakta (Chrysler biyel kolu yatağının) sürtünme katsayısı değişimi, teorik ve deneysel olarak belirlenmiştir. Çalışmanın teorik kısmında; yatak yükünün, yatak boşluğunun ve yağ viskozitesi değişiminin sürtünme katsayısına etkisi incelenmiştir. Deneysel kısımda ise; sürtünme momentine yatak parametrelerinin etkisi TM 290 hidrodinamik radyal kaymalı yatak deney setinden ölçülmüştür. Ölçülen sürtünme momentinden, sürtünme katsayısı hesaplanmıştır. Sonuç olarak teorik ve deneysel olarak belirlenen sürtünme katsayıları karşılaştırılmıştır.In this study, variation of the friction coefficient on statically loaded radial journal bearing ( Chrysler connecting rod bearing) was determined theoretically and experimentally. In theoretical part, the effect of the bearing load, journal bearing clearance and oil viscosity to the friction coefficient was examined. In experimental part, the effect of the journal bearing parameters on the friction torque was measured by using TM 290 Hydrodynamic radial journal bearing apparatus. The friction coefficient was calculated using measured friction torque. Consequently, it was compared that obtained theorically and experimentally friction coefficient

Mucus plugging problem in patients treated in the intensive care unit: A case report

In this paper, we will present a case who died in ICU during treatment for suicidal organophosphate intoxication. It is aimed to draw attention to the importance of regular tracheal aspiration and bronchoscopy, especially in intubated patients during treatment in ICU. In the medical documents of the case, it was learned that a 67-year-old male case was brought to a private hospital with a history of suicidal Jestis 2.5 EC, Alban EC4 (organophosphate) intake. The case died after being treated in the ICU for a total of 15 days following organophosphate intake. At autopsy, during an internal examination, approximately 5x2x1,5 cm in size, with brown-black color, organized, hardened paste consistency mucus plug was observed which was localized in the bifurcation of the trachea. It is considered to be useful to evaluate the indication of bronchoscopy in cases with better general conditions and hope for recovery. [Med-Science 2020; 9(1.000): 284-6