Kagan Coskun
Military Medical Academy
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Clinics | 2010
Ali Harlak; Öner Menteş; Selim Kilic; Kagan Coskun; Kazim Duman; Fahri Yılmaz
PURPOSE Sacrococcygeal pilonidal disease is a source of one of the most common surgical problems among young adults. While male gender, obesity, occupations requiring sitting, deep natal clefts, excessive body hair, poor body hygiene and excessive sweating are described as the main risk factors for this disease, most of these need to be verified with a clinical trial. The present study aimed to evaluate the value and effect of these factors on pilonidal disease. METHOD Previously proposed main risk factors were evaluated in a prospective case control study that included 587 patients with pilonidal disease and 2,780 healthy control patients. RESULTS Stiffness of body hair, number of baths and time spent seated per day were the three most predictive risk factors. Adjusted odds ratios were 9.23, 6.33 and 4.03, respectively (p<0.001). With an adjusted odds ratio of 1.3 (p<.001), body mass index was another risk factor. Family history was not statistically different between the groups and there was no specific occupation associated with the disease. CONCLUSIONS Hairy people who sit down for more than six hours a day and those who take a bath two or less times per week are at a 219-fold increased risk for sacrococcygeal pilonidal disease than those without these risk factors. For people with a great deal of hair, there is a greater need for them to clean their intergluteal sulcus. People who engage in work that requires sitting in a seat for long periods of time should choose more comfortable seats and should also try to stand whenever possible.
International Journal of Surgery | 2013
Ali Harlak; Taner Yigit; Kagan Coskun; Tahir Özer; Öner Menteş; Bülent Güleç; Orhan Kozak
BACKGROUND AND AIMS Caustic esophageal injury is a rare clinical condition in adult patients. Although dilatation, or the conservative approach, is the primary treatment method, some patients require surgical intervention. Because of the rarity of such cases, standard surgical treatment algorithms cannot be utilized. In this article, we present our surgical experience and discuss the challenges in the surgical management of corrosive injury of the esophagus in adults. METHODS A retrospective review was conducted of 28 patients who suffered from a corrosive esophageal injury between 1996 and 2011. Patient demographics, history of corrosive material ingestion, preoperative findings, treatment strategy, operative technique, postoperative course, requirements for further treatment, and the current status of the patients were investigated. RESULTS All patients underwent a transhiatal esophagectomy in addition to a gastric pull-up with a cervical esophagogastrostomy. The mean follow-up time was 62 (12-140) months. One patient developed a deep surgical infection; anastomotic stenosis was noted and treated with dilatation in 13 patients. The mean time period between the operation and the first dilatation for 12 patients was 81 (45-161) days. The mean dilatation count for the patients was 3 (1-10). CONCLUSION Although it comes with high anastomotic stenosis rates, transhiatal esophagectomy and gastric pull-up with cervical anastomosis is a safe procedure, which can be performed for the treatment of corrosive esophageal stricture.
The Eurasian Journal of Medicine | 2010
M. Tahir Özer; Mehmet Eryilmaz; Kagan Coskun; Sezai Demirbas; A. Ihsan Uzar; Orhan Kozak
OBJECTIVE Blunt and penetrating hepatic injuries are conditions that are frequently encountered in emergency surgeries, and they involve high mortality morbidity. In the handling of such injuries, methods ranging from the application of simple cauterization and suturing for hemostasis to hepatic lobectomies, which might involve the removal of the greater part of the organ, have been defined. Due to the organs fragility and susceptibility to bleeding, elective hepatic resections necessitate both surgical experience and technological equipment. Therefore, the demand still exists for an affordable and easy-to-use-method that could be applied by all centers. MATERIALS AND METHODS To meet this demand, we have developed a method of hemorrhage control via sutures supported by absorbable plaques that provide effective compression and prevent the suture from cutting the tissue during the application of the sutures in the treatment of such fragile organs as the liver. In our method, we have achieved hemostasis by bilaterally compressing the tissue through strong ties after placing, on the part of the tissue on which the sutures are applied, absorbable and flexible plaques that prevent the suture from cutting the tissue during the application of a polyglactin suture to the solid organ. To prevent dislocation of the plaques, we have fastened the sutures by reeving them through the holes made in the plaques. RESULTS We have demonstrated the success and the practicality of our method by applying it on four pigs; we experimentally inflicted hepatic injuries on two pigs, and we performed resection on the other two pigs. The hepatic hemorrhages we developed in both of the animals were successfully restrained by the use of our method. On the other hand, two resections were performed on the right and left lobes of the other two animals. There were no hemorrhages during the surgery, and the procedure took 45 minutes in total. No postoperative complications occurred. While the liver function test values were high on the seventh day, due to the operation, they were observed to be normal on the thirtieth day. After the laparotomies, performed six months later, we observed that the plaques as well as the sutures were absorbed and that the injured tissues were completely healed. Additionally, it was observed during the pathological examination that the tissues beneath the area of application were healed through fibrosis and that the liver had no other pathologies. CONCLUSIONS In conclusion, we believe that the method can be safely used in hepatic resections or traumatic hemorrhages in the proper locations.
Turkish journal of trauma & emergency surgery | 2013
Gokhan Ogunc; Mustafa Özer; Kagan Coskun; Mehmet Eryilmaz; Ali İhsan Uzar
BACKGROUND It was aimed in this study to clarify the wounding potential of free-falling bullets fired at 90° or close to right angles. MEHTOHDS In this study, 9x19 mm and 7.65x17 mm bullets, which are commonly used among civilians, were used. The muzzle velocities of these ammunitions were measured. According to the muzzle velocity data, the free-falling motion and strike velocity of the 9x19 mm and 7.65x17 mm bullets were simulated using the EBV4® External Ballistics Software at angles of 65°-90° with firings at 5° intervals. The simulation results were compared with critical velocity of tissues. In addition, the judicial records and press reports on this type of wound were examined and evaluated in light of the literature. RESULTS The strike velocity and kinetic energy of free-falling bullets, which were fired into the air at 5° intervals between 65°-90°, were measured. The average strike velocity and kinetic energy of 9x19 mm bullets were 92.25 m/sec and 34.05 J and of 7.65x17 mm bullets were 79.66 m/sec and 14.91 J, respectively. As a result of the archives examination, 65 such wounds were detected between 2000 and 2012, and 27 of them resulted in death. DISCUSSION According to these results, the strike velocity of free-falling 9x19 mm and 7.65x17 mm bullets, which were fired into the air, exceeds the threshold and critical velocity limits of skin and flat bones, and the kinetic energy of the bullets is able to cause significant wounding. Even though the symptoms and features of these types of wounds may not be similar to those of ordinary gunshot wounds in the first medical examination, the first responders should be aware of the possibility of gunshot wounds, and they should take into account the criminal investigation phase during the treatment process; the necessary precautions should be taken in order to preserve the evidence.
Journal of Adhesion Science and Technology | 2012
M. Tahir Özer; Onder Onguru; Ayşe Eken; Huseyin Sinan; Kagan Coskun; Emin Ozgur Akgul; Nurkan Torer; Mehmet Eryilmaz; Sezai Demirbas; A. Ihsan Uzar
Many methods have been described for preventing or reducing postoperative adhesions. In this work, we evaluated the effectiveness of Budesonide in combination with SprayGel in a reducing postoperative adhesion in rats as the model. Cecal abrasion was achieved in 60 male Sprague-Dawley rats, by brushing and by applying 70% alcohol. The rats were separated into six groups and treated with six solutions (Group I – saline; II – Budesonide 50 μg; III – Budesonide 250 μg; IV – SprayGel; V and VI – SprayGel + Budesonide 50 and 250 μg). Serum Budesonide, glucose, alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase and blood urea nitrogen levels were measured at postoperative day (POD) 2 and 14. The rats were killed on POD 14, and intra-abdominal adhesion formation was scored. Histopathological samples were obtained from the cecum and terminal ileum to evaluate microscopic adhesion formation. Our results showed that Group VI had both the minimum macroscopic adhesion score and the minimum microscopic score. All other groups had significantly lower microscopic adhesion scores than Group I. However, there was no statistical significance among any other groups. Serum AST levels of Group III were significantly higher than in Groups I, II, IV, and V (p < 0.046). Serum AST levels of Group III on POD 14 were also significantly higher than that of all other groups (p < 0.02). On POD 14, there was no Budesonide in the sera of Groups II and V. However, Groups III and VI had trace amounts of Budesonide (0.009 and 0.007 μg, respectively). In conclusion, we have showed that the effect of Budesonide is dosedependent. Both anti-adhesive and hepatotoxic side effects of Budesonide increased as the dose increased. Combining Budesonide with SprayGel synergistically increased the anti-adhesive benefits and prevented hepatotoxicity from the slower release of Budesonide.
Naunyn-schmiedebergs Archives of Pharmacology | 2010
Elif Cadirci; Akgun Oral; Fehmi Odabasoglu; Cenk Kilic; Kagan Coskun; Zekai Halici; Halis Suleyman; Osman Nuri Keles; Bunyami Unal
Turkish journal of trauma & emergency surgery | 2012
Kagan Coskun; Öner Menteş; Aysegul Atak; Arzu Aral; Mehmet Eryilmaz; Onder Onguru; Müjdat Balkan; Orhan Kozak; Sadettin Cetiner
Forensic Science International | 2009
Gokhan Ogunc; M. Tahir Özer; Kagan Coskun; Ali İhsan Uzar
The Eurasian Journal of Medicine | 2008
Okudur Ss; Özer Mt; Sezai Demirbas; Kalemoğlu M; Harlak A; Kagan Coskun; Mehmet Eryilmaz
Gulhane Medical Journal | 2012
Selda Yildiz; Necdet Kocabiyik; Kagan Coskun; Tahir Özer; Nazif Zeybek