Yazar "Baysal, Ahmet Nihat" seçeneğine göre listele

Listeleniyor 1 - 3 / 3
  • Küçük Resim
    Öğe
    Radiobasilic Versus Brachiobasilic Transposition on the Upper Arm to Avoid Steal Syndrome
    (Int Scientific Information, Inc, 2015) Karaca, Okay Güven; Baysal, Ahmet Nihat; Ecevit, Ata Niyazi; Kalender, Mehmet; Darçın, Osman Tansel; Sungur, Mehmet Ali
    Background: Although the proximal radial artery has been reported as an alternative inflow to prevent steal syndrome, brachiobasilic fistula has been reported to be associated with steal syndrome in 10-20% of cases. We aimed to compare proximal radiobasilic arteriovenous fistula (AVF) with brachiobasilic AVFs on the upper arm in terms of steal syndrome and outcomes. Material/Method: We used our institutional operative record database to identify 94 patients in whom brachiobasilic AVF (n=40) and radiobasilic AVF (n=54) were placed between January 2009 and December 2013. Postoperative complications such as steal syndrome, venous hypertension, and aneurysm were recorded. Results: Steal syndrome was determined to occur less frequently in the radiobasilic AVF group (0% vs. 10%, P=0.03). The rates of other complications (bleeding, aneurysm, venous hypertension) between the 2 groups were similar, as were the patency rates. Conclusions: Radiobasilic AVF was effective in reducing steal syndrome, with similar early and late outcomes.
  • Küçük Resim
    Öğe
    Short Term Outcomes of Endarterectomy to Asymptomatic Extracranial Carotid Artery Disease
    (2020) Kalender, Mehmet; Uğur, Oğuz; Gökmengil, Hayat; Baysal, Ahmet Nihat; Düzyol, İpek Yakın; Parlar, Hakan; Karaca, Okay Güven
    Aim: Recently published papers regarding the treatment of carotid artery stenosis are incontradiction with previous trials. Some experts have argued that this evidence supports aconservative approach to carotid revascularization (carotid endarterectomy or carotid stenting)in asymptomatic patients. The objective of this study is to evaluate outcomes of carotidendarterectomy based on preoperative symptom status.Material and Methods: This retrospective study included patients underwent carotidendarterectomy to internal carotid artery between August 2008 and August 2015. Patients weredivided into two groups according to preoperative symptoms. Asymptomatic group consistedof 41 patients with no preoperative neurological symptoms, and symptomatic group of 62patients with preoperative neurological symptoms (vertigo, amaurosis fugax, transientischemic attack and ischemic stroke). Postoperatively, all patients received standard therapy inline with the recommendation of the guidelines.Results: One hundred and three patients were enrolled in this study. The mean age of patientswas 68.20±9.79 (range, 41-86) years, and 27 (26.2%) of them were female. There were nostatistically significant difference in terms of demographic characteristics between the groupsexcept risk groups; asymptomatic group had more high risk grouped patients (p=0.001).Asymptomatic group was associated with statistically significantly more postoperativemortality compared with symptomatic group (p=0.028). None of the preoperative variableswere related to postoperative stroke. In symptomatic group, postoperative stroke was seen inthe patients who had preoperative transient ischemic attack and major stroke.Conclusion: Time of surgical treatment in asymptomatic carotid artery disease should beplanned according to patients’ cardiac risk factors.
  • Küçük Resim
    Öğe
    Validation of German Aortic Valve Score in a Multi-Surgeon Single Center
    (Soc Brasil Cirurgia Cardiovasc, 2017) Kalender, Mehmet; Baysal, Ahmet Nihat; Karaca, Okay Güven; Boyacıoğlu, Kamil; Kayalar, Nihan
    Objective: Risk assessment for operative mortality is mandatory for all cardiac operations. For some operation types such as aortic valve repair, EuroSCORE II overestimates the mortality rate and a new scoring system (German AV score) has been developed for a more accurate assessment of operative risk. In this study, we aimed to validate German Aortic Valve Score in our clinic in patients undergoing isolated aortic valve replacement. Methods: A total of 35 patients who underwent isolated open aortic valve replacement between 2010 and 2013 were included. Patients with concomitant procedures and transcatheter aortic valve implantation were excluded. Patients' data were collected and analyzed retrospectively. Patients' risk scores EuroSCORE II were calculated online according to criteria described by EuroSCORE taskforce, Aortic Valve Scores were also calculated. Results: The mean age of patients was 61.14 +/- 13.25 years (range 29-80 years). The number of female patients was 14 (40%) and body mass index of 25 (71.43%) patients was in range of 22-35. Mean German Aortic Valve Score was 1.05 +/- 0.96 (min: 0 max: 4.98) and mean EuroSCORE was 2.30 +/- 2.60 (min: 0.62, max: 2.30). The Aortic Valve Score scale showed better discriminative capacity (AUC 0.647, 95% CI 0.439-0.854). The goodness of fit was x(2)HL[Aortic Valve Score]= 16.63; P= 0.436). EuroSCORE II scale had shown less discriminative capacity (AUC 0.397, 95% CI 0.200-0.597). The goodness of fit was good for both scales. The goodness of fit was x(2)HL[EuroSCORE II]= 30.10; P= 0.610. Conclusion: In conclusion, German AV score applies to our population with high predictive accuracy and goodness of fit.