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  • Küçük Resim
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    Correlation Between the mayo adhesive probability score and the operative time in laparoscopic donor nephrectomy
    (Elsevier Inc., 2021) Özçelik, Ümit; Eren, Eryiğit; Urut, Devrim Ulaş; Talih, Tutkun; Tokaç, Mehmet; Dinçkan, Ayhan
    Background: Adherent perinephric fat (APF) is a known risk factor of surgical difficulty during laparoscopic donor nephrectomy (LDN). The Mayo Adhesive Probability (MAP) score predicts APF accurately. The aim of this study is to identify the association between MAP score and operative time in LDN. Methods: We retrospectively evaluated 154 kidney donors who underwent surgery from December 2017 to December 2019 at İstanbul Aydın University Hospital and İstinye University Hospital. All of the operations were done by 3 senior surgeons by a fully laparoscopic method. The MAP score was derived from computed tomography scans by 1 blinded reader. Demographic data, body mass index (BMI), MAP score, side selection, estimated glomerular filtration rate (eGFR), number of arteries and veins, operative time, hospital stay, and complications are recorded. Single and multiple variable analyses were used to evaluate the correlation between operative time and MAP score, BMI, side selection, and number of vascular structures. Results: A total of 154 patients (79 men, 75 women) with a mean age of 44.4 ± 12.72 were included in this study. None of the cases were converted to open nephrectomy. There were no major complications. Mean BMI was 27.59 ± 4.32 kg/m2, mean MAP score was 0.69 ± 1.15, and mean operative time was 40.25 ± 9.81 minutes. Although mean BMI was higher in women (28.19 ± 4.52 vs 27.03 ± 4.07; P < .05), mean MAP score was lower than in men (0.35 ± 0.86 vs 1.03 ± 1.29; P < .001). Older age, higher BMI, higher MAP score, and presence of multiple renal arteries were associated with longer operative time of LDN. The MAP score was associated with older age, male sex and higher BMI. Conclusions: This study showed that different risk factors can affect operative time in LDN. The MAP score was significantly associated with longer operative time, especially in men, so it can be useful for predicting surgical difficulty in kidney donors.
  • Küçük Resim
    Öğe
    Karaciğer nakli sonrası hepatit B nüksünün önlenmesinde kısa süreli düşük doz hepatit B immünoglobulini ile nükleotid analoğu kombinasyonunun etkinliği
    (DergiPark, 2020) Özçelik, Ümit; Eren, Eryiğit; Talih, Tutkun; Özozan, Ömer Vefik; Ensaroğlu, Fatih
    Amaç: Hepatit B’ye bağlı siroz nedeniyle karaciğer nakli yapılan hastalarda hepatit B nüksünün önlenmesi için kısa süreli düşük doz hepatit B immünoglobulini ile nükleotid analoğunun birlikte kullanımının etkinliğini belirlemek amaçlandı. Gereç ve Yöntem: 01 Aralık 2017 ile 01 Eylül 2018 tarihleri arasında İstanbul Aydın Üniversitesi Sağlık Uygulama ve Araştırma Hastanesi ve İstinye Üniversitesi Sağlık Uygulama ve Araştırma Hastanesi hastanelerinde Hepatit B’ye bağlı siroz veya hepatosellüler kanser nedeniyle karaciğer nakli yapılmış hastalar retrospektif olarak incelendi. Hastaların demografik bulguları, ameliyat öncesi viral belirteçleri, hepatosellüler kanser varlığı, HBV DNA varlığı, kullanılan hepatit B immünoglobulin dozu, ameliyat sonrası HBsAg, Anti-HBs, HBV DNA düzeyleri değerlendirildi. Bulgular: Ortalama yaşı 54±11 (aralık; 30-69) olan toplam 17 hasta (3 kadın, 14 erkek) çalışmaya dâhil edildi. Hastaların tümünün ameliyat öncesi HBsAg’si pozitif, 2 tanesinin ise HBV DNA’sı pozitifti. Ortalama takip süresi 16±3.3 ay (aralık; 12-22 ay) idi. Bu süreçte hiçbir hastada hepatit B nüksü gelişmedi. Sonuç: Bu çalışmada kısa süreli düşük doz hepatit B immünoglobulini ile nükleotid analoğu kombinasyonunun karaciğer nakli sonrası erken dönemde hepatit B nüksünü önlemede etkin olduğu görülmüştür. Bulgunun uzun dönem sonuçlarıyla desteklenmesi gerekmektedir.
  • Küçük Resim
    Öğe
    A new approach in bariatric operations: bridged mini gastric by-pass. Is rabbit model suitable for an experimental study?
    (2021) Sümer, Aziz; Çelik, Sebahattin; Vartanoğlu Aktokmakyan, Talar; Pekşen, Çağhan; Savaş, Osman Anıl; Talih, Tutkun; Sancak, Tunahan; Kuşcu, Yağmur
    Objectives: Obesity is a global health epidemic with considerable co-morbidities. The increasing demand for bariatric surgery has led to the emergence of new techniques. We modified previously described Mini Gastric By-pass(MGB) technique via leaving a bridge at the most cranial 2 cm of the fundus of the human stomach to the follow-up and treatment of the remnant stomach and duodenum. We would like to entitle this new technique as Bridged MGB and aimed to apply on rabbits as an experimental study. Material and methods: The study was performed in the experimental animal laboratory of university after ethical approval was taken from the local ethics committee. Described new technique was applied to 2.1 and 3.2 kg 2 New Zealand rabbits. Results: As a result of the operations, one of the rabbits died on the day of the operation; the other rabbit was exitus postoperatively on the third day. In autopsies, although no problem was detected at the anastomoses, necrosis was detected in the large curvature of both rabbits. Conclusion: Rabbit, one of the popular experimental animals, has been shown to be different from the human gastrointestinal system in both arterial and topographic aspects and it has been emphasized that it varies according to the species and even the diet and the climate. We believe that our study failed as a result of these differences and that animals more similar to humans should be used in gastrointestinal experimental studies.