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Öğe Carbon monoxide poisoning presenting with atrial fibrillation [Karbonmonoksit zehirlenmesine bağlı gelişen atriyal fibrilasyon](TIP ARASTIRMALARI DERNEGI, 2015) Avci A.; Yilmaz A.; Demir K.; Celik M.; Karatas R.Carbon monoxide intoxication is one of the most common types of poisoning and it is the leading cause of death by poisoning in the world. We report a carbon monoxide intoxication case presenting with atrial fibrillation on 17 years old healthy boy. 17 years old boy admitted to emergency service after exposuring carbon monoxide gas approximately 3 hours. His first electrocardiography (ECG) showed atrial fibrillation with rapidly ventricular response. After oxygen supply sinus rhythm was achieved spontaneously. Emergency physicians should be aware of the clinical presentation of carbon monooxide intoxication. Every patient that arrived emergency service with acute or chronically carbon monoxide poisoning should undergo cardiovascular investigation, including ECG and measurement of cardiac enzymes. © 2015, TIP ARASTIRMALARI DERNEGI. All rights reserved.Öğe In ectopic origin of the left coronary artery from the right sinus of Valsalva [Sol ana koronerin sa? sinus Valsalvadan tek koroner ostium gibi çıkışı](TIP ARASTIRMALARI DERNEGI, 2013) Avci A.; Demir K.The incidence of various coronary artery anomalies ranges between 0.3 and 0.8% in patients undergoing cardiac catheterization. Anomalous coronary arteries are not considered a risk factor for development of coronary atherosclerosis. Most anomalies are discovered as incidental findings during coronary arteriography or at autopsy. In this case, the coronary angiography was performed the patient admitted with atrioventricular complet block and, left main coronary artery arising from the right sinus of Valsalva as a single coronary ostium was seen. This is an extremely rare coronary anomaly.Öğe Production of ZnO nanorods by arc discharge in de-ionized water(2011) Eskizeybek V.; Toumiat A.; Avci A.Fast production of ZnO nanorods was obtained by bottom up approach using arc discharge in de-ionized water method. XRD shows the ZnO nanorods crystallize in the hexagonal wurtzite structure and exhibit (101) preferential orientation, with a calculated mean grain size of approximately 30 nm. TEM analysis shows well-crystallized nanorod morphology with a diameter ranging from 10 to 30 nm and the length varied from 50 to 100 nm. In addition, TEM shows the presence of 10 nm diameter rodlike nanoparticles. The ZnO nanorod growth have been empirically based on these results. © 2011, Advanced Engineering Solutions.Öğe Reversible myocarditis after spider bite(2013) Kara H.; Ak A.; Bayir A.; Avci A.Black widow spiders (Latrodectus tredecimguttatus) are poisonous spiders endemic in Turkey. Latrodectus bites may cause myocarditis with increased cardiac enzymes. We treated two men (aged 20 and 33 years) who had myocarditis after black spider bites with leucocytosis and elevated levels of troponin I, creatine kinase and creatine kinase-MB fraction. Both patients had normal results on an ECG, and one patient had abnormal echocardiography with minimal left ventricular wall movement disorder. Both patients were hospitalised in the intensive care unit and treated with intravenous fl uids, analgesics, spasmolytic drugs, tetanus prophylaxis and cardiac monitoring. The levels of troponin I, creatine kinase and creatine kinase-MB fraction improved, and the patients were discharged home on the third and fifth hospital day without complications. Myocarditis after a Latrodectus bite is rare, but may be associated with serious complications. Therefore, in regions endemic with Latrodectus spiders, prudent treatment of spider bites may include cardiac evaluation and monitoring. Copyright 2013 BMJ Publishing Group. All rights reserved.Öğe Stress intensity factors for a ring-shaped crack in a transversely isotropic thick layer(2003) Ataberk N.; Uyaner M.; Avci A.The problem of a ring-shaped crack in an infinitely long thick layer was considered in this study. The problem was formulated for a transversely isotropic material by using integral transform technique under uniform load. Due to the geometry of the configuration, Hankel integral transform technique was chosen and the problem was reduced to a singular integral equation. This integral equation was solved numerically by using Gaussian Quadrature Formulae and the values were evaluated for discrete points. Stress intensity factors were obtained by using these values. They were tabulated for various ring-shaped crack sizes and transversely isotropic materials.Öğe A young patient after acute exposure to carbon monoxide(Kowsar Medical Publishing Company, 2016) Onal O.; Celik D.; Aslanlar E.; Avci A.; Bengi Celik J.[Abstract not Available]
