Yazar "Onalan, Mehmet Akif" seçeneğine göre listele

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    Carotid artery screening in asymptomatic individuals of different ethnic origins
    (Czech Soc Cardiology & Czech Soc Cardiovascular Surgery, 2022) Beyaz, Metin Onur; Onalan, Mehmet Akif; Oztas, Didem Melis; Ugurlucan, Murat
    Background and aims: Certain chronic conditions such as hypertension, diabetes mellitus (DM), hyperchole-sterolemia, and smoking were well defined as a risk factor for carotid stenosis. However, the development of carotid stenosis in different ethnic groups has not been researched adequately. This study aims to evaluate the carotid artery stenosis in patients of different ethnic origins. Methods: This prospective study included 246 (61.2%) Turkish natives and 153 (39.8%) Syrian immigrants, and carried out during March and September 2018 in Istanbul. All of the 399 participants were between the age of 50 and 65 years, and have at least one of the risk factors of hypertension, hyperlipidemia, DM, obesity, heavy socio-economic stress, and smoking. Patients were examined for bilateral carotid arterial system with Doppler ultrasound. Results: The mean age of the patients were 54.2 +/- 7.2, and there were 50.4% of women. Hypertension was the foremost risk factor of both groups (41.1% vs. 47.7%, p = 0.596). Smoking was higher among Turkish natives (p = 0.022). Hyperlipidemia, DM, and stress were similar between the groups (p >0.05). The overweight and obesity rates were also similar among Turkish natives and Syrian immigrants (p = 0.071 and p = 0.279). Patients with mild (<50%), moderate (50-70%) and severe (>70%) carotid stenosis were 332 (83.2%), 33 (8.3%) and 34 (8.6%). No statistical significance was found between the two ethnic groups in terms of the severity of carotid stenosis (p >0.05). Conclusion: Syrian immigrants and Turkish natives have a similar rate of moderate and severe carotid artery stenosis. It can be explained by racial similarity and having a similar risk factor.
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    Surgical Treatment of Asymptomatic Popliteal Artery Aneurysms and Mid-term Outcome
    (Springer India, 2021) Beyaz, Metin Onur; Ata, Emin Can; Demir, Ibrahim; Onalan, Mehmet Akif; Sayin, Omer Ali
    Popliteal artery aneurysm (PAA) is a rare condition with an incidence ranging from 0.8 to 2.8%; however, it constitutes approximately 70-85% of all peripheral artery aneurysms. It is asymptomatic in the majority of cases but can cause pain and edema due to venous and neuronal compression. The most severe complication is limb lost due to thromboembolic event. Although surgical treatment left its place to endovascular treatment in the 1990s, surgical treatment still maintains its importance in preventing complications. Here, we aim to report our experience and results of the surgical management of popliteal aneurysms in this study. In this retrospective study, a total of 21 patients who were operated on due to popliteal artery aneurysm between October 2017 and January 2020 were analyzed. Patients with pseudoaneurysm and those who are infected and complicated were excluded from our study. The mean age was 63.3 +/- 9.6; females were 17 (81%). Mean follow-up was 19 +/- 8 months. More than two risk factors were found in 14 (66.7%) patients. Aneurysmectomy was performed successfully in all patients. Autologous saphenous vein graft was used in 11 (52.4%), whereas 6-mm polytetrafluoroethylene (PTFE) graft was preferred in 10 (47.6%) patients. During the follow-up period, limb loss rates were 16.7% and 83.3%, respectively. The difference was statistically significant (p < 0.05). No relation was found between the aneurysm diameter and postoperative graft occlusion. Limb loss rate was high in popliteal aneurysm repair using PTFE graft due to graft occlusion; saphenous vein graft is more superior in terms of mid-term graft patency.
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    Vascular Tumors of the Neck in Adults: 10-Year Experience in a Tertiary Center
    (Forum Multimedia Publishing, Llc, 2020) Goksel, Onur S.; Gok, Emre; Karatepe, Celalettin; Sarilar, Cagla Canbay; Onalan, Mehmet Akif; Beyaz, Metin Onur; Alpagut, Ufuk
    Introduction: The diagnosis and management of vascular lesions of the neck is a challenging task that requires a multidisciplinary approach. This retrospective study assesses the single center experience of vascular tumors of the neck. Materials and methods: Patients diagnosed with a vascular tumor and/or a mass in close proximity to the carotid artery were identified from our records over a 10-year period. The demographic characteristics, clinical features, surgical approach, and outcomes were reviewed. Results: Surgical excision of 17 vascular lesions were performed in 16 patients with a mean age of 51.56 +/- 17.35 years at the time of operation. Intra- and/or postoperative clinical and histological assessment revealed unilateral glomus caroticum (N = 11), glomus vagale (N = 2), bilateral glomus caroticum (N = 1), cavernous hemangioma (N = 1), and carotid sheath tumor (N = 1). In three patients, internal carotid artery, common carotid artery and vagal nerve were sacrificed to facilitate complete tumor excision. During the follow-up period, no tumor recurrences were observed, and the morbidity and mortality were minimal. Conclusion: Preoperative evaluation concerning the size, extent, and anatomical relationships of the tumor thoroughly should be investigated. Multidisciplinary approach involving vascular surgery, otolaryngology, and radiology is preferred to treat these patients for better outcomes. Preoperative embolization in selected cases may decrease estimated blood loss and operative time.