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Dive into the research topics where Orhan Arseven is active.

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Featured researches published by Orhan Arseven.


Clinical and Applied Thrombosis-Hemostasis | 2008

HEREDITARY THROMBOPHILIC RISK FACTORS AND VENOUS THROMBOEMBOLISM IN ISTANBUL, TURKEY: THE ROLE IN DIFFERENT CLINICAL MANIFESTATIONS OF VENOUS THROMBOEMBOLISM

Gulfer Okumus; Esen Kiyan; Orhan Arseven; Levent Tabak; Reyhan Diz-Kucukkaya; Yesim Unlucerci; Neslihan Abaci; Nihan Erginel Ünaltuna; Halim Issever

The aim of this study was to investigate the hereditary thrombophilic risk factors in patients with venous thromboembolism (VTE) and whether these risk factors play a different role in patients with isolated pulmonary embolism (PE) as compared with patients with deep vein thrombosis (DVT) and patients with PE + DVT. The protein C (PC), protein S, antithrombin activities, homocysteine levels, and factor V Leiden (FVL) G1691A and prothrombin G20210A mutations were evaluated in 191 patients with VTE and 191 controls. The prevalence of FVL and PC deficiency were higher in patients (P = .003 and P = .02, respectively). There was no significant difference for the other risk factors. The combination of thrombophilic risk factors was significantly higher in patients with DVT + PE as compared with patients with isolated PE or DVT (P = .04). In conclusion, the most important hereditary risk factors for VTE in this study were the FVL mutation and PC deficiency.


Clinical and Applied Thrombosis-Hemostasis | 2007

Platelet glycoprotein Ia 807C/T and 873G/A polymorphisms in patients with venous thromboembolism.

Gulfer Okumus; Esen Kiyan; Orhan Arseven; Levent Tabak; Evrim Komurcu Bayrak; Nihan Erginel Ünaltuna; Halim Issever

Two silent polymorphisms (807C/T and 873G/A) within glycoprotein Ia (GPIa) gene have been implicated in increased risk of developing thrombosis and myocardial infarction in affected individuals. The aim of this study was to investigate the GPIa gene polymorphism in patients with venous thromboembolism (VTE). A multiplexed allele specific-polymerase chain reaction (AS-PCR)–based method was used to determine the GPIa 807T/873A allele frequency in 77 patients with VTE and 106 healthy controls. The allelic frequency for 807T/873A was 33% in the patient group and 38% in the control group. The allelic frequency for 807C/873G was 66% in the patient group and 62% in the control group. The genotypic frequencies were 8% for 807TT/873AA, 42% for 807CC/GG, and 50% for 807CT/GA in the patient group. In the control group, the frequencies were 12% for 807TT/873AA, 35% for 807CC/873GG, and 52% for 807CT/873GA. As a result, the glycoprotein Ia 807C/T and 873G/A dimorphisms were not shown as risk factors for VTE.


Clinical Respiratory Journal | 2018

Follow-up of 1887 patients receiving tumor necrosis-alpha antagonists: Tuberculin skin test conversion and tuberculosis risk

Tulin Cagatay; Zuleyha Bingol; Esen Kiyan; Zeynep Yegin; Gulfer Okumus; Orhan Arseven; Feyza Erkan; Ziya Gulbaran; Mustafa Erelel; Turhan Ece; Penbe Cagatay; Zeki Kilicaslan

To evaluate the characteristics of patients who developed tuberculosis while receiving tumor necrosis factor‐alpha (TNF‐α) antagonists and the related factors with tuberculosis.


Clinical Respiratory Journal | 2018

The role of an activity monitor in the objective evaluation of patients with pulmonary hypertension

Gulfer Okumus; Goksen Kuran Aslan; Orhan Arseven; Gul Ongen; Halim Issever; Esen Kiyan

Patients with pulmonary hypertension (PH) show no symptoms at rest, but symptoms are triggered by physical activities.


Journal of Clinical Medicine Research | 2011

Multiple Systemic Infarctions as a Complication of Bronchial Artery Embolization With Polyvinyl Alcohol: A Case Report

Abdullah Ozkok; Ayse Serra Ucar; Timur Selcuk Akpinar; Gulfer Okumus; Esen Kiyan; Orhan Arseven

Bronchial artery embolization (BAE) is a widely used modality of treatment for massive hemoptysis which has well known complications such as chest pain, groin hematoma and transverse myelitis but systemic embolization of the material used in the procedure is very rare and was reported only four times in the literature which were all caused by the use of microspheres. Herein we report a case of a 41-year-old caucasian male who had a history of tuberculosis 10 years ago. He had BAE with polyvinyl alcohol (PVA) for the treatment of recurrent hemoptysis. After the procedure, the patient complained of severe pain on the left upper quadrant and bilateral costovertebral regions and in abdominal CT, multiple infarcts in the subcapsular area of the spleen and kidneys were observed. This is the first reported case of inadvertent systemic embolization secondary to BAE with PVA. Although the risk of systemic embolization is greater with microspheres, still potentially serious and life threatening complications may occur with PVA. Keywords Bronchial artery emobolization; Complication; Polyvinyl alcohol


Respiratory Medicine | 2002

The frequency of deep venous thrombosis and pulmonary embolus in acute exacerbation of chronic obstructive pulmonary disease

Mustafa Erelel; Turhan Ece; Orhan Arseven


Internal Medicine | 2008

Disseminated Alveolar Echinococcosis Mimicking a Metastatic Malignancy

Abdullah Ozkok; Emine Gul; Gulfer Okumus; Ensar Yekeler; Mine Gulluoglu; Esen Kiyan; Orhan Arseven


European journal of general medicine | 2005

ANTIPHOSPHOLIPID SYNDROME PRESENTING AS MASSIVE PULMONARY EMBOLISM IN A PATIENT WITH SARCOIDOSIS

Bahar Artım Esen; Esen Kiyan; Reyhan Diz Küçükkaya; Levent Tabak; Faruk Akturk; Orhan Arseven; Gulfer Okumus; Murat Inanc


Thrombosis and Haemostasis | 2003

Insertion/deletion polymorphism of the angiotensin-converting enzyme gene: really a risk factor for venous thromboembolism?

Gulfer Okumus; Orhan Arseven


Respiratory Medicine Extra | 2006

Atrial thrombi due to Behcet's disease: Case report

Gulfer Okumus; Esen Kiyan; Fatih Selçuk Biricik; Ahmet Kaya Bilge; Sevil Kamali; Zeki Kilicaslan; Orhan Arseven

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