Murat Urkan

Publication Rate of Abstracts Presented at the Annual Congress of the European Society for Surgical Research during 2008-2011

Background/Purpose: The presentation of scientific studies at major meetings serves to rapidly share study results with the scientific community. On the other hand, full-text publication of abstracts in peer-reviewed journals ensures the dissemination of science. This study examines the publication rate (PR) of meeting abstracts presented at the European Society for Surgical Research (ESSR) congresses and determines/compares the factors affecting the PRs. Methods: All presentations at the ESSR congresses held during 2008-2011 were retrospectively assessed. Manuscripts indexed in PubMed were included. The meeting year, journal impact factor (IF) in the publication year, study type, presentation type, time to publication and geographic origin of studies were assessed. Results: Among a total of 1,368 oral and poster abstracts, 48.7% (n = 391) of the oral presentations (OPs) and 29.7% (n = 168) of the poster presentations (PPs) were published in medical journals indexed in PubMed. The mean IF of the journals was 2.696 (0.17-14.95). The journals that published OPs had a higher IF than the journals in which PPs were published (2.944 vs. 2.118; p < 0.001). The PR was also higher in the OP group than in the PP group of journals (p < 0.001). The time to publication was 17.5 months (−166 to 82) and was shorter for PPs than for OPs (14.02 vs. 19.09 months; p = 0.01). According to the study type, experimental studies had a significantly higher PR (53.7%; p < 0.001); however, there was no significant difference in PR in terms of the prospective or retrospective nature of clinical studies. The clinical studies were also compared according to the IF values of the journals in terms of the prospective or retrospective nature of the study, and no significant difference was found (p = 0.62). Conclusion: The ESSR congress is an efficient meeting for researchers from varied surgical disciplines and has a PR equivalent to that of similar scientific meetings. The congress has achieved a PR of 40.9% over 4 years with an average IF of 2.696 and a mean time to publication of 17.5 months, which is equivalent to that of similar scientific meetings. OPs have a higher PR in journals with greater IF values as compared with PPs.

Publication rates of abstracts presented at the annual congress of the Turkish Society of Colorectal Surgery (years 2003-2011)

OBJECTIVE The aim of our study is to examine the Publication Rate of Congress of Turkish Society of Colorectal Surgery meeting abstracts and determine the factors affecting publication rate. MATERIAL AND METHODS All presentations at Congress of Turkish Society of Colorectal Surgery congresses held in 2003, 2007, 2009, 2011 were retrospectively assessed. Manuscripts indexed in Google-Scholar database were included. The meeting year, study type, presentation type, title and time to publication of studies were assessed. Actual impact factor values were assessed to introduce the scientific power of the journals. RESULTS Among a total of 614 abstracts presented at these congresses, 139 (22.6%) presentations were published in various medical journals. The publication rate was higher in oral presentations as group compared to poster presentations (29.7% vs. 19.5%) (p<0.001). Mean time to publication period was 20.4 (±21.1) months. 78 (56.1%) of published articles were published in SCI-E journals while 61 (43.9%) were published in non-SCI-E journals. Experimental studies had a higher Publication Rate in analysis of publication rate according to study type (p<0.001). Prospective clinical studies had a higher publication rate than retrospective studies. The journals in which oral presentations had been published had greater impact factor than journals in which poster presentations had been published (p=0.02). If published; prospective clinical studies were published in journals with greater impact factor than retrospective studies (p=0.04). CONCLUSION The quality of a meeting is correlated with the publication of abstracts accepted as presentations. Congress of Turkish Society of Colorectal Surgery congress is an efficient meeting for researchers, and have a lower PR as compared to international congresses while having a similar publication rate to equivalent scientific meetings. Being more selective during abstract acceptance should increase the Publication Rate and quality of Congress of Turkish Society of Colorectal Surgery congresses.

Bringing PRBC to the point of combat injury: are we there yet?

Objective Hemorrhage is the leading cause of injury-related prehospital mortality. We investigated worst-case scenarios and possible requirements of the Turkish military. As we plan to use blood resources during casualty transport, the impact of transport-related mechanical stress on packed red blood cells (PRBCs) was analyzed. Materials and Methods The in vitro experiment was performed in the environmental test laboratories of ASELSAN®. Operational vibrations of potential casualty transport mediums such as Sikorsky helicopters, Kirpi® armored vehicles, and the NATO vibration standard MIL-STD-810G software program were recorded. The most powerful mechanical stress, which was created by the NATO standard, was applied to 15 units of fresh (≤7 days) and 10 units of old (>7 days) PRBCs in a blood cooler box. The vibrations were simulated with a TDS v895 Medium-Force Shaker Device. On-site blood samples were analyzed at 0, 6, and 24 h for biochemical and biomechanical analyses. Results The mean (±standard deviation) age of fresh and old PRBCs was 4.9±2.2 and 32.8±11.8 days, respectively. Six-hour mechanical damage of fresh PRBCs was demonstrated by increased erythrocyte fragmentation rates (p=0.015), hemolysis rates (p=0.003), and supernatant potassium levels (p=0.003) and decreased hematocrit levels (p=0.015). Old PRBC hemolysis rates (p=0.015), supernatant potassium levels (p=0.015), and supernatant hemoglobin (p=0.015) were increased and hematocrit levels were decreased (p=0.015) within 6 h. Two (13%) units of fresh PRBCs and none of the old PRBCs were eligible for transfusion after 6 h of mechanical stress. Conclusion When an austere combat environment was simulated for 24 h, fresh and old PRBC hemolysis rates were above the quality criteria. Currently, the technology to overcome this mechanical damage does not seem to exist. In light of the above data, a new national project is being performed.

Clinical and prognostic significance of preoperative and postoperative neutrophil/lymphocyte ratio and platelet/ lymphocyte ratio in patients undergoing major abdominal surgery

Aims: Acute inflammatory processes are associated with perioperative complications. Neutrophil/lymphocyte ratio (NLR) and platelet/lymphocyte ratio (PLR) were reported to have prognostic importance in various diseases. We aimed to investigate the clinical importance of preoperative (preop) and postoperative (postop) NLR and PLR as predictors of morbidity and surgical or nonsurgical complications after major abdominal surgery. Methods: Patients who had a major abdominal surgery were retrospectively evaluated. Age, gender, American Society of Anesthesiologist (ASA) score, and the type of operation were recorded. Preop and postop days 1, 3 and 5 white blood cell (WBC), neutrophil, lymphocyte and platelet counts, duration of intensive care unit stay and hospitalization, Clavien Dindo classification, and surgical or non-surgical complications were determined. Results: The study included 462 subjects. Concerning increased need for red blood cell transfusions, NLR was significantly higher on postop day 3 but lower on day 5, and PLR was higher on postop day 1 compared to preop state. Regarding a worse ClavienDindo classification, NLR was higher on postop day 3 but lower on day 5, and PLR was higher on postop day 1 and 3 compared to baseline. In those with increased surgical complications, NLR was lower on postop day 5, and postop day 1 and 3 PLR were higher compared to baseline values. In subjects with higher non-surgical complications, NLR was higher on postop day 3 but lower on day 5 compared to preop measurements. PLR was similar across the days of follow up in terms of non-surgical complications. Conclusions: Higher NLR on postoperative day 5, and higher PLR on postoperative days 1 and 3 compared to preop values were the indicators of increased complications in this study.

Antikoagulasyonla başarılı bir şekilde tedavi edilen portal ve splenik trombozla kombine superior mezenterik ven trombozu

Antikoagulasyonla basarili bir sekilde tedavi edilen Portal ve Splenik trombozla kombine Superior mezenterik Ven Trombozu

Central hepatectomy: A valuable option to avoid posthepatectomy liver insufficiency in patients requiring extensive liver resection

Despite being uncommon, posthepatectomy liver failure (PLF) is a dreadful complication following extended hepatectomy or liver trisectionectomy. It has been reported that liver insufficiency may occur in as high as 12% of posthepatectomy patients, especially in those who have a concomitant chronic liver disease, hepatosteatosis or history of receiving long-course (>6 cycles) chemotherapy (1). Central hepatectomy or mesohepatectomy, defined as en-bloc anatomical resection of liver segments 4-5 and 8, is a valuable option in patients with central large or multiple liver lesions to minimize PLF caused by the loss of a considerable portion of functional liver parenchyma following extensive resections (2). The purpose of this video-based article is to share key procedural components to be adhered to when performing central hepatectomy.

Contents Vol. 56, 2016

I. Alwayn, Halifax D.K. Bartsch, Marburg C. Bassi, Verona W.O. Bechstein, Frankfurt am Main J.A. Bradley, Cambridge M. Cikirikcioglu, Geneva P.-A. Clavien, Zurich U. Dahmen, Jena R.W.F. de Bruin, Rotterdam S. Fichtner-Feigl, Regensburg H. Friess, Munich G. Galata, London D.J. Gouma, Hilversum J.K. Habermann, Lübeck M. Heberer, Basel M. Heger, Amsterdam T. Hubert, Lille W.R. Jarnagin, New York, N.Y. J.C. Kalff, Bonn M.W. Laschke, Homburg/Saar H.-A. Lehr, Friedrichshafen C.M. Malata, Cambridge T. Minor, Bonn M. Morino, Torino J. Pirenne, Leuven A. Schachtrupp, Melsungen T. Schmitz-Rixen, Frankfurt a.M. R. Schramm, Munich L. Steinstraesser, Oldenburg A. Szijártó, Budapest R.H. Tolba, Aachen M. van Griensven, Munich T.M. van Gulik, Amsterdam M.A. Venermo, Helsinki M.H. Wilhelmi, Hannover D.C. Winter, Dublin Y. Yamamoto, Akita Clinical and Experimental Surgery

Kidney Preserving Resection of Leiomyosarcoma with Reconstruction of Left Renal Vein: Case Report

Background: Leiomyosarcoma is a common retroperitoneal sarcomas mostly originating from muscles. Only about 5% of leiomyosarcomas arise directly from large blood vessels and more than 50% of cases originate from inferior vena cava. Primary leiomyosarcomas of renal veins are extremely rare (30 cases). Mostly diagnosed at advanced stages because of nonspecific clinical signs. Case: A 40-year-old woman was evaluated of a left retroperitoneal mass with severe back pain. CT scan revealed a left retroperitoneal mass 7 cm. in size adjacent to left renal hilum. During the operation; a multilobular, solid tumor in 7 x 6.5 x 3 cm size, surrounding the left renal vein was observed. Further dissection revealed that the tumor was originated from left renal vein wall. Total devascularization and partial left renal vein resection with tumor and end to end anastomosis was performed. Vascular outflow was confirmed with intraoperative and postoperative doppler examination. Pathology was reported as moderately differentiated leiomyosarcoma, originated from renal vein wall with tumor free resection margins and the patient was discharged with adjuvant chemoradiotherapy. Conclusion: Although the radical nephrectomy is the gold standard approach for malign tumors of the kidney, kidney preserving tumor free resection with vascular reconstruction is a feasible alternative followed by adjuvant chemoradiotherapy and close follow up. Kidney preserving tumor free resection with vascular reconstruction and followed by adjuvant chemoradiotherapy is a feasible alternative instead of radical nephrectomy.

Apendektomi Sonrası Görülen Rektus Kılıf Apsesi

Rectus sheath abscess is a rare condition with high risk of morbidity and mortality. We presented an abscess formation at rectus sheath after appendectomy Rapid diagnosis with directed history, physical examination, and computerized tomography of the abdomen may help for the correct management of rectus sheath abscess.Rectus sheath abscess is a rare condition with high risk of morbidity and mortality. We presented an abscess formation at rectus sheath after appendectomy Rapid diagnosis with directed history, physical examination, and computerized tomography of the abdomen may help for the correct management of rectus sheath abscess.