Person: OCAKOĞLU, GÖKHAN
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OCAKOĞLU
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GÖKHAN
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Publication Retrosternal deformations after coronary artery bypass surgery using statistical shape analysis(Soc Brasil Cirurgia Cardiovasc, 2021-01-01) Bademci, Mehmet Senel; Kocaaslan, Cemal; Bayraktar, Fatih Avni; Tayfur, Kaptaniderya; Aydin, Ebuzer; Ocakoglu, Gokhan; OCAKOĞLU, GÖKHAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi.; AAH-5180-2021Introduction: In this study, we aimed to evaluate the anatomical deformations of the major vascular structures in the retrosternal area caused by adhesions following coronary artery bypass grafting (CABG).Methods: This single-center, retrospective study included a total of 40 patients with a previous CABG who were admitted to our emergency unit for any reason and underwent a contrast-enhanced chest computed tomography (patient group) and 40 patients without previous cardiac surgery (control group) between January 2018 and November 2019. The retrosternal area was compared between the groups using the statistical shape analysis method. The distance between the sternum and the ascending aorta and pulmonary artery was measured and anatomical deformations of the retrosternal area were examined.Results: There was a statistically significant difference in the anatomical structures of the retrosternal area between the patient and control groups (P<0.001). The distance from the midsternal line to the highest point of the pulmonary artery was statistically significantly shorter in the patient group, compared to the control group (P=0.013). The distance from the sternum to the ascending aorta was also shorter in the patient group, although it did not reach statistical significance (P>0.05).Conclusions: Our study results showed narrowing of the retrosternal area following CABG and a shorter distance from the sternum to the pulmonary artery than the ascending aorta. Based on these findings, surgeons should be cautious about possible injuries in patients requiring cardiac surgery with repeated median sternotomy.Publication The efficacy of new oral contrast mixture for computed tomography enterography(Int Scientific Information Inc, 2019-10-15) Eyrimler, Sehnaz; Algın, Oktay; Ocakoğlu, Gökhan; OCAKOĞLU, GÖKHAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Biyoistatistik Anabilim Dalı.; 0000-0002-1114-6051; HLG-6346-2023; AAH-5180-2021Purpose: To show the reliabilities of the new mixture (composed of water, methylcellulose, lactulose, locust bean gum, and sorbitol) and to compare the luminal distension and radiological confidence scores of this solution with water-lactulose mixture.Material and methods: Computed tomography enterography (CTE) images in a three-year period were included randomly in our institutional review board-approved and retrospective study. Ninety-one patients drank a lactulose and water mixture (Group 1), and 54 patients drank the new mixture (Group 2). Patients who drank the oral contrast agent were taken to a 64-detector row multiple detector computed tomography machine. Coronal and sagittal reformatted images were also formed. The gastrointestinal tract was divided into 11 segments for scoring. Each segment was graded for distensional and radiological confidence. CTE images were evaluated by two radiologists.Results: Inter- and intra-reader reliabilities were good or excellent for all gastrointestinal segments in both groups (p < 0.001). The best. values were obtained in sigmoid colon assessments. Lower agreement values were detected in duodenum and jejunum scores. The new mixture group (Group 2) showed better results than Group 1 for ileum and colonic segments according to distension and confidence scorings.Conclusions: Inter- and intra-reader reliabilities of the new mixture were good or excellent for CTE. The new mixture seems to be more efficient and reliable for ileum and colon. The new mixture can increase bowel distention, radiological confidence, and quality in CTE evaluations.Publication Comparison of endoscopic and pathological findings of the upper gastrointestinal tract in transplant candidate patients undergoing hemodialysis or peritoneal dialysis treatment: A review of literature(BMC, 2020-10-22) Usta, Mehmet; Ersoy, Alparslan; Ayar, Yavuz; Ocakoğlu, Gökhan; Yüzbaşıoğlu, Bilgehan; Erdem, Emrullah Düzgün; Erdoğan, Ömer; ERSOY, ALPARSLAN; OCAKOĞLU, GÖKHAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/İç Hastalıkları Anabilim Dalı/Nefroloji Bilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Biyoistatistik Anabilim Dalı.; 0000-0002-0710-0923; AAH-5180-2021; AAH-5054-2021Background: Dyspepsia is a common disorder in kidney transplant recipients, and the risk of post-transplant complications is increased in candidates with upper gastrointestinal disease. We evaluated gastrointestinal lesions of kidney transplant candidates on dialysis.Methods: In this study, endoscopic and pathological findings in hemodialysis (HD) and peritoneal dialysis (PD) patients with gastrointestinal symptoms on the waiting list were compared.Results: The most common non-ulcerous lesions in the endoscopic examination were gastritis (62.3%), erosive gastritis (38.7%), duodenal erosion or duodenitis (18.9%) and esophagitis (13.2%). The ulcerous lesion was present in only 3 patients. Gastroesophageal reflux disease, ulcerated lesion and non-ulcerated lesion rates were similar in both dialysis groups. Histopathological examination revealedHelicobacter pylori(HP) positivity in 28.3% of patients. HP positivity rate was significantly higher in PD patients than in HD patients (38.7% vs. 13.6%,p = 0.046). Chronic gastritis (75.5%) was the most common pathological finding. HP positivity rate was 37.5% in patients with chronic gastritis, but HP was negative in patients without chronic gastritis. In multivariate analysis, male gender, urea and albumin levels were associated with the presence of pathological chronic gastritis. The presence of gastritis, total cholesterol and ferritin levels were found significant for HP positivity. A total cholesterol > 243 mg/dL was significantly related to an increased risk of the presence of HP positivity.Conclusions: Gastrointestinal lesions and HP infection are common in dialysis patients. Dialysis modality may affect the frequency of some lesions. It may be useful to have an endoscopic examination before entering the transplant waiting list for all candidates.Publication Statistical shape analyses of the brainstem in chiari patients(Türk Nöroloji Derneği, 2021-01-01) Ocakoglu, Gokhan; OCAKOĞLU, GÖKHAN; Taskapilioglu, Mevlut Ozgur; TAŞKAPILIOĞLU, MEVLÜT ÖZGÜR; Altunyuva, Oguz; ALTUNYUVA, OĞUZ; Yilmazlar, Selcuk; YILMAZLAR, SELÇUK; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Tıbbi Biyoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Nöroşirürji Anabilim Dalı.; 0000-0002-1114-6051; 0000-0001-5472-9065; 0000-0002-3450-0471; AAH-5180-2021; AAK-9899-2020AIM: To ascertain whether the brain stem's shape differs in patients with syrinx and without syrinx in cases with Chiari malformation Type I (CM-1), relative to healthy controls.MATERIAL and METHODS: Data on marked brainstem regions were obtained from 2D digital image files. Generalized Procrustes analysis was used to evaluate shape differences among patients with syrinx, patients without syrinx, and healthy controls. Shape deformations among groups were examined by Thin Plate Spline (TPS) analysis.RESULTS: According to the brain stem shape, there were differences between patients with syrinx and controls, and between patients without syrinx and controls. High-level deformations were also observed among the groups.CONCLUSION: In the present study, the presence of shape deformations in Chiari patients' brainstem was demonstrated. This is the first study using a landmark-based geometrical morphometric method to demonstrate the shape difference in Chiari patients' brainstem.Publication The comparison of outcomes between the "skeleton uterus technique" and conventional techniques in laparoscopic hysterectomies(Wolters Kluwer Medknow Publications, 2019-04-01) Orhan, Adnan; ORHAN, ADNAN; Kasapoğlu, Işıl; KASAPOĞLU, IŞIL; Ocakoğlu, Gökhan; OCAKOĞLU, GÖKHAN; Yürük, Oğuzhan; YÜRÜK, OĞUZHAN; Uncu, Gürkan; UNCU, GÜRKAN; Özerkan, Kemal; ÖZERKAN, KEMAL; Bursa Uludağ Üniversitesi/Tıp Fakültesi; 0000-0002-7558-8166; 0000-0002-1114-6051; V-5292-2019; K-2269-2016; AAT-3479-2021; AAH-9791-2021; AAI-4169-2021; AAH-5180-2021; HLG-6346-2023Aim: The aim of this study is to compare demographic characteristics, operative data, and complication rates of women who underwent total laparoscopic hysterectomy by the skeleton uterus technique (Skeleton-TLH) with those of women who underwent TLH by the standard technique (Standard-TLH) in a university teaching and research hospital.Materials and Methods: This retrospective study included 932 laparoscopic hysterectomies in a university teaching and research hospital between January 1, 2013 and December 31, 2017. Clinical characteristics, operative outcomes, and complications were recorded and compared for the two techniques.Results: In total, 932 laparoscopic hysterectomies were performed, 454 by Skeleton-TLH and 478 by Standard-TLH. The general demographic characteristics of the patients were similar; only gravida and parity were statistically significantly different between the groups (P < 0.001). Based on the primary outcomes (the operative data), total anesthesia time and main operation time were similar in the two groups. Estimated blood loss was statistically significantly lower in the Skeleton-TLH group than in the Standard-TLH group. Hospital stay was longer for the Skeleton-TLH group, and specimen weight was heavier. The secondary outcome was the complication rate. There were no differences between the Skeleton-TLH and Standard-TLH groups in the rates of all minor and major complications.Conclusion: TLH with the skeleton uterus technique is feasible and safe, especially for advanced pelvic surgeons. This technique not only provides retroperitoneal access to the pelvic spaces and good anatomical visibility; but it also delivers a safer laparoscopic hysterectomy by clamping the uterine arteries and monitoring the ureter throughout the operation.Publication The impact of ki-67 index, squamous differentiation, and several clinicopathologic parameters on the recurrence of low and intermediate-risk endometrial cancer(Assoc Basic Medical Sci Federation Bosnia & Herzegovina Sarajevo, 2021-01-01) Ocak, Birol; Atalay, Fatma Oz; Sahin, Ahmet Bilgehan; Ozsen, Mine; Dakiki, Bahar; Ture, Seray; Mesohorli, Merve; Odman, Hikmet Utku; Tanriverdi, Ozgur; Ocakoglu, Gokhan; Bayrak, Mehmet; Ozan, Hakan; Demiroz, Candan; Sali, Seda; Orhan, Sibel Oyucu; Deligönül, Adem; Çubukcu, Erdem; Evrensel, Turkkan; Ocak, Birol; OCAK, BİROL; Sahin, Ahmet Bilgehan; ŞAHİN, AHMET BİLGEHAN; Atalay, Fatma Oz; ÖZ ATALAY, FATMA; Ozsen, Mine; ÖZŞEN, MİNE; Dakiki, Bahar; DAKİKİ KORUCU, BAHAR; Ture, Seray; TÜRE AYDIN, SERAY; Mesohorli, Merve; Odman, Hikmet Utku; Ocakoglu, Gokhan; OCAKOĞLU, GÖKHAN; Bayrak, Mehmet; Ozan, Hakan; OZAN, HAKAN; Demiroz, Candan; DEMİRÖZ ABAKAY, CANDAN; Sali, Seda; SALİ, SEDA; Orhan, Sibel Oyucu; OYUCU ORHAN, SİBEL; Deligonul, Adem; DELİGÖNÜL, ADEM; Cubukcu, Erdem; ÇUBUKÇU, ERDEM; Evrensel, Turkkan; EVRENSEL, TÜRKKAN; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Onkoloji Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Patoloji Anabilim Dalı.; 0000-0001-7537-1699; 0000-0002-7188-6115; 0000-0002-7846-0870; 0000-0002-5771-7649; 0000-0001-9255-2475; 0000-0002-1114-6051; 0000-0003-1600-333X; AEC-2238-2022; ABA-2897-2021; AAH-5180-2021; AAM-4927-2020; AAJ-8314-2021Endometrial endometrioid carcinoma (EEC) represents approximately 75-80% of endometrial carcinoma cases. Three hundred and thirty-six patients with EEC followed-up in the authors' medical center between 2010 and 2018 were included in our study. Two hundred and seventy-two low and intermediate EEC patients were identified using the European Society for Medical Oncology criteria and confirmed by histopathological examination. Recurrence was reported in 17 of these patients. The study group consisted of patients with relapse. A control group of 51 patients was formed at a ratio of 3:1 according to age, stage, and grade, similar to that in the study group. Of the 17 patients with recurrent disease, 13 patients (76.5%) were Stage 1A, and 4 patients (23.5%) were Stage 1B. No significant difference was found in age, stage, and grade between the case and control groups (p > 0.05). Body mass index, parity, tumor size, lower uterine segment involvement, squamous differentiation (SqD), and Ki-67 index with p<0.25 in the univariate logistic regression analysis were included in the multivariate analysis. Ki-67 was statistically significant in multivariate analysis (p = 0.018); however, there was no statistical significance in SqD and other parameters. Our data suggest that the Ki-67 index rather than SqD needs to be assessed for recurrence in patients with low- and intermediate-risk EEC.Publication Comparative evaluation of health care-related infections in pediatric and newborn intensive care units in a university hospital: The seven-year retrospective study(Galenos Yayınevi, 2021-08-01) Özaslan, Zeynep; Çelebi, Solmaz; Köksal, Nilgün; Özkan, Hilal; Ocakoğlu, Gökhan; Yeşil, Edanur; Özer, Arife; Turan, Cansu; Bülbül, Beyhan; Hacımustafaoğlu, Mustafa Kemal; ÖZASLAN, NEBAHAT ZEYNEP; ÇELEBİ, SOLMAZ; Köksal, Nilgün; ÖZKAN, HİLAL; OCAKOĞLU, GÖKHAN; YEŞİL, EDANUR; Özer, Arife; TURAN, CANSU; BÜLBÜL, BEYHAN; HACIMUSTAFAOĞLU, MUSTAFA KEMAL; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Çocuk Sağlığı ve Hastalıkları Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Çocuk Sağlığı ve Hastalıkları Anabilim Dalı/Çocuk Enfeksiyon Bilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Çocuk Sağlığı ve Hastalıkları Anabilim Dalı/Neonotoloji Bilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Biyoistatistik Anabilim Dalı.; 0000-0001-9400-7825; 0000-0002-1114-6051; 0000-0002-8926-9959; 0000-0003-3146-6391; 0000-0002-5720-1212; 0000-0003-4646-660X; 0000-0003-2641-4140; 0000-0002-3536-0263; 0000-0001-5454-5119; 0000-0001-9232-0084; GSO-3630-2022; JCD-9679-2023; A-1302-2018; AAH-5180-2021; JHN-1091-2023; JGS-7600-2023; JJY-3921-2023; IVB-4013-2023; GAX-3172-2022; CTG-5805-2022; JHR-3083-2023Introduction: In this study, it was aimed to evaluate the incidence, density and reciprocal relationships of Health Care Associated Infections (HCAIs) detected in the Pediatric Intensive Care Unit (PICU) and Neonatal Intensive Care Unit (NICU) in Bursa Uludag University Faculty of Medicine Hospital as a general perspective.Materials and Methods: In this study, data of 91 PICU and 158 NICU patients who developed HCAIs between 2012-2018 years, taking into account the criteria of the Centers for Disease Control and Prevention (CDC) 2015 and the Turkish National Hospital Infections Surveillance Network (UHESA) 2017, were retrospectively analyzed.Results: The HCAIs rate was higher in NICU (9.6% vs 14.9%; respectively, p <0.001), but the infection density was lower (9.9 versus 7.8/1000 patient days, p=0.061). Stay of length for all patients in NICU was found to be longer (19.1 days vs 9.7 days; p <0.001), and the median length of stay with HCAIs in PICU and in NICU was 41.5 days versus 49 days respectively (p=0.1). The median time of HCAIs diagnosis was 17 days in PICU vs 15 days in NICU, p=0.6). In NICU, according to birth weight, HCAIs rates and infection densities were 7.8% and 2.7/1000 patient-days in <750 g patients; 23.2% and 6.2/1000 patient-days in 751-1000 g patients, 6.1% and 4.9 patient-days in 1001-1500 g patients, 44.7% and 9.2/1000 patient-days in 1501-2500 g patients, and %24.6 and 13.8/1000 patient-days in >2501 g patients. HCAIs rates were found to be higher in babies with >1501 g.Conclusions: There may be differences in the rates and prevention strategies in PICU and NICU and continuous and high quality maintenance is important for infection control measures.Publication Demographic and clinical features of medullary thyroid carcinoma(Turkiye Klinikleri, 2020-12-01) Şişman, Pınar; Bicer, Buket; Öztop, Hikmet; ÖZTOP, HİKMET; Gül, Özen Öz; ÖZ GÜL, ÖZEN; Cander, Soner; CANDER, SONER; Ocakoglu, Gokhan; OCAKOĞLU, GÖKHAN; Ersoy, Canan; ERSOY, CANAN; Ertürk, Erdinç; ERTÜRK, ERDİNÇ; Bursa Uludağ Üniversitesi/Tıp Fakültesi; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Endokrinoloji Anabilim Dalı.; 0000-0002-1114-6051; AAH-5180-2021; AAJ-6536-2021; HTQ-8395-2023; AAH-8861-2021; HLG-6346-2023; AAI-1005-2021Objective: Medullary thyroid carcinoma (MTC) is an aggressive neuroendocrine tumor affecting the parafollicular C cells of the thyroid gland. This study aimedto analyze demographic and clinical factors that might affect the prognosis of MTC andevaluate the long-term outcomes of surgery in MTC patients at a single center. Material and Methods: A total of 36 patients with a confirmed MTC diagnosis based on histopathological examination and underwent surgery-during 2000-2015 were examined. Archived files of these patients were reviewed, and data on clinical, biochemical, and radiological test results were assessed. Factors affecting disease-free survival were also evaluated. Results: Theduration of the follow-up of the patients was 80.3 +/- 76.1 months. MEN2A was detected in three patients (8.3%). Twelve patients (33.3%) had metastasis at the time of diagnosis. During the follow-up period, local recurrence was observed in 13 (36.1%) patients. Nine patients (25%) presented metastasis at follow-up. The mean disease-free survival was high in sporadic MTC compared to hereditary MTC. Conclusion: The study observed asignificant contribution to the hereditary nature of the disease on prognosis. However,other prognostic factors such as gender, nodule characteristics, recurrence and metastasis, and treatment modalities did differsignificant. Patients with MTC should be evaluated to know if the disease is sporadic or hereditary. The small sample size in this study restricts the power of statistical analysis;therefore, further prospective studies are necessary to reveal the other contributory prognostic factors in MTC.Publication Three-dimensional analysis of craniofacial shape in obstructive sleep apnea syndrome using geometric morphometrics(Soc Chilena Anatomia, 2019-01-01) Can, Fatma Ezgi; Özdemir, Senem Turan; ÖZDEMİR, SENEM; Ercan, İlker; ERCAN, İLKER; Ocakoğlu, Gökhan; OCAKOĞLU, GÖKHAN; Çetinoğlu, Ezgi Demirdöğen; Ursavaş, Ahmet; URSAVAŞ, AHMET; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Anatomi Anabilim Dalı.; Bursa Uludağ Üniversitesi/Tıp Fakültesi/Bioistatistik Anabilim Dalı.; 0000-0002-2382-290X; 0000-0002-1114-6051; 0000-0002-7400-9089; HLG-6346-2023; AAI-3169-2021; AAH-5180-2021; AAA-8734-2021; ABF-2367-2020; JPK-7012-2023Craniofacial morphology is a risk factor for obstructive sleep apnea syndrome. The general aim of this study was to investigate the craniofacial shape differences in adults with and without obstructive sleep apnea syndrome, using geometric morphometric methods. A descriptive study conducted in 106 adult Turkish subjects, consisting of 50 patients with OSAS diagnosed by polysonmography and 56 non-OSAS controls. Tlree dimensional craniofacial scanning processes were performed on patient subjects on the same day as the PSG. Twelve standard craniofacial landmarks were collected from each subject's 3D craniofacial scan. Geometric morphometric analysis was used to compare the craniofacial shape differences between the OSAS and non-OSAS control groups. No statistically significant difference in terms of general shape in face shapes was found between the OSAS group and control group. However, local significance differences were found. There were significant differences between the groups in some of the interlandmark distances: 11 % of the interlandmark distances were greater in OSAS patients, and 29 % were greater in controls. Greater measured distances in OSAS are concentrated in the nasal region. In the control group, the difference is not concentrated in a specific region. Given the relationship of craniofacial structural alterations and sleep disordered breathing, we hypothesized that inter-landmark distance measurements in the craniofacial anatomy of patients might be predictive of OSA.Publication A meshless practical laparoscopic sacrohysteropexy modification and long-term outcomes(Elsevier, 2020-11-01) Orhan, Adnan; Özerkan, Kemal; Kasapoglu,Işıl; Ocakoğlu, Gökhan; Aslan, Kiper; Uncu, Gürkan; ORHAN, ADNAN; ÖZERKAN, KEMAL; KASAPOĞLU, IŞIL; OCAKOĞLU, GÖKHAN; ASLAN, MÜNİR KİPER; UNCU, GÜRKAN; Uludağ Üniversitesi/ Tıp Fakültesi/Doğum ve Jinekoloji Bölümü/Ürojinekol ve Minimal İnvas Jinekol Ünitesi; Uludağ Üniversitesi/Sağlık Bilimleri Enstitüsü/Biyoistatistik Anabilim Dalı; 0000-0002-7558-8166; 0000-0002-1114-6051; 0000-0002-9277-7735; V-5292-2019; AER-7173-2022; AAH-9694-2021; AAT-3479-2021; AAH-9791-2021; AAH-5180-2021; K-2269-2016Study Objective: To describe a new modification of laparoscopic sacrohysteropexy without using a mesh and report the 3-year outcomes.Design: A prospective cohort study.Setting: Minimally Invasive Gynecology Unit, Bursa Uludag University Hospital, Turkey.Patients: Women who were diagnosed with >= stage 2 uterine prolapse.Interventions: A laparoscopic sacrohysteropexy modification using a polyester fiber suture instead of a standard polypropylene mesh.Measurements and Main Results: The primary outcome was the anatomic success of the repair, with success defined as objective parameters using the pelvic organ prolapse quantification system. The secondary outcomes were subjective outcomes, which were assessed using the quality-of-life scales. Forty-seven women who underwent the procedure were followed up for a minimum of 3 years. Forty-four of the 47 patients had stage 0 or 1 prolapse at the end of the second year, according to the primary outcomes. The anatomic success rate was 93.6%. In the secondary outcomes, 2 patients were not satisfied with their pelvic floor after the second year. The subjective cure rate was 95.7%. There was a statistically significant improvement in both pelvic organ prolapse quantification and quality-of-life scores in the third postoperative year. The mean operating time was 84.6 minutes, and the mean estimated blood loss was 21.3 mL. There were no bladder or bowel complications in the perioperative or postoperative period.Conclusion: Laparoscopic sacrohysteropexy can be performed safely with this meshless modification in uterine prolapse as an alternative. (c) 2020 AAGL. All rights reserved.