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Featured researches published by Ozgen Isik.


Turkish journal of trauma & emergency surgery | 2014

Fournier's gangrene: review of 120 patients and predictors of mortality.

Tuncay Yilmazlar; Ozgen Isik; Ersin Ozturk; Ali Ozer; Baris Gulcu; Ilker Ercan

BACKGROUND Fourniers gangrene (FG) is a devastating and potentially fatal disease requiring prompt and aggressive debridement. In this study, it was aimed to assess the predictors of mortality in a large cohort. METHODS Prospectively maintained data of patients with FG were analyzed. Demographic data, duration of symptoms, Uludag Fourniers Gangrene Severity Index (UFGSI) scores, co-morbidities [particularly diabetes mellitus (DM)], etiologies, number of debridement, stoma requirements, length of intensive care unit and hospital stay, and morbidity and mortality rates were reviewed. Multivariate analysis was performed in order to determine factors affecting mortality. RESULTS 120 patients (81 males) were included in the study. Median age was 58 (22-85) years. UFGSI score was median 9 (1-30). DM was present in 69 (57.5%) patients. Etiology of FG was perianal in fifty-nine, urogenital in 52, and skin in 9 patients. Median debridement count was 3 (1-12). Thirty-one patients required stoma. Forty-eight patients were admitted to intensive care unit and 25 patients required mechanical ventilation. Overall mortality rate was 20.8%. Multivariate analysis revealed UFGSI as the only predictor of mortality (p=0.001). Mortality rate was 13.64 times higher for patients with a UFGSI score of 9 or higher. CONCLUSION Fourniers gangrene is a mortal disease requiring emergency surgery. UFGSI is an efficient predictor of mortality for patients with FG.


Turkish journal of trauma & emergency surgery | 2016

Gender does not affect the prognosis of Fournier’s gangrene: a case-matched study

Pınar Sarkut; Ozgen Isik; Ersin Ozturk; Baris Gulcu; Ilker Ercan; Tuncay Yilmazlar

BACKGROUND Female gender is accepted as a poor prognostic factor for Fourniers gangrene (FG). However, there is a paucity of data in the literature regarding this matter. This case-matched study was designed to investigate the impact of gender on outcomes of FG. METHODS Study patient data were retrieved from 120-patient, prospectively maintained database. Thirty-two female patients with FG were case-matched to 32 male patients based on symptom duration (days), FG severity index score, patient age, etiology, and presence of diabetes mellitus (DM) terms. Outcomes of FG were compared between the 2 groups. RESULTS Median age was 57 years (range: 22-80 years), and 35 (54.7%) patients had DM. Patients underwent average of 3 debridement procedures (range: 1-9 debridements), and 15 (23.4%) received diverting stoma. Overall mortality rate was 28.1% (18 of 64 patients). Female gender was associated with widespread disease (p=0.009), increased need for consecutive debridements (p=0.005), prolonged length of intensive care unit stay (p=0.035), and increased requirement for split-thickness skin graft reconstruction (p=0.040). However, mortality rates were comparable between genders (p=0.264). CONCLUSION FG is often more extensive in females and seems to be associated with anatomical features of female pelvis. However, female gender is not a factor affecting prognosis of patients with FG.


Journal of Integrative Oncology | 2014

Anastomotic Leak after Colorectal Surgery: Leak Rate For Right Hemicolectomy may be Higher than Expected

Ozgen Isik; Tuncay Yilmazlar; Ersin Ozturk; Pinar

Background: Despite of the increasing knowledge and developing technology anastomotic leak (AL) is still a serious complication of colorectal surgery. The aim of this study was to evaluate the management and outcomes of AL after colorectal surgery. Methods: The study included all patients diagnosed with AL after colorectal surgical procedures between January 2005 and December 2009. Patient demographics, diagnoses, AL management protocols, and outcomes were reviewed. Since the highest AL rate was detected for right hemicolectomy, two groups were identified based on the index surgery in order to determine the differences between the patients: right hemicolectomy and other procedures. Results: In total, 28 of 550 (5.1%) patients that underwent colorectal surgical procedures were diagnosed with AL. There were 24 males with a median age of 61 (35- 93) years. Right hemicolectomy was associated with the highest procedure-specific AL rate (10.44%). In the right hemicolectomy group, patients had higher ASA scores, underwent more frequent emergency procedures, and majority of them were operated by residents comparing to the other procedures group (p<0.05). Twenty-four patients required surgical intervention for AL, and 23 patients that underwent re-operation required a stoma; end colostomy was the most frequent procedure (50%). AL-specific morbidity rate was 57.1% whereas the mortality rate among the patients with AL was 25%. Conclusion: AL after colorectal surgery is associated with high morbidity and mortality. Patients with high ASA score, emergency procedure, and inexperienced surgeon may be factors requiring extra attention in terms of high AL risk after right hemicolectomy comparing to the other colorectal procedures.


Turkish Journal of Surgery | 2018

Colorectal cancer surgery in octogenarians

Baris Gulcu; Tuncay Yilmazlar; Ozgen Isik; Ersin Ozturk

OBJECTIVE The incidence of colorectal cancer becomes higher among octogenarians as the life expectancy increases. Whether advanced age is a risk factor for colorectal surgery is a matter of debate. In the present study, the clinical results of octogenarians who underwent colorectal cancer surgery are discussed to find an answer to this question. MATERIAL AND METHODS Data of 63 octogenarians who were operated in a tertiary colorectal surgery department between January 1, 2010 and December 31, 2013 were reviewed retrospectively. Demographic data and preoperative, peroperative, and postoperative parameters were evaluated. RESULTS Overall, 57.2% of the patients were men. The median age was 81 (80-89) years. Cancer was located at the right colon in 17.5%, left colon in 50.8%, and rectum in 31.7%. Eleven patients underwent emergency surgery (17.5%). The most common surgical procedure was low anterior resection in elective (22.2%) and Hartmanns procedure in the emergency setting (9.5%). Stoma creation was more frequent among patients undergoing emergency procedures (42% vs. 6.8%; p=0.0018). Histopathological diagnosis was adenocarcinoma in 90.5% of the patients, and 34.9% of the patients had stage IIIB disease. Surgical morbidity was significantly higher among patients who underwent rectal resection (66% vs. 10.2%; p=0.0124). Medical morbidity was observed in 10 (15.9%) patients. Preoperative blood transfusion was a risk factor for morbidity (83.4% vs. 29.8%; p=0.0170). Length of total hospital stay was 14 (3-39) days. Surgical (p=0.0004) and medical (p=0.0288) morbidity prolonged the length of total hospital stay. The overall mortality rate was 1.6%. CONCLUSION Colorectal surgery may be safely performed in octogenarians with acceptable morbidity and mortality in specialized centers.


International Journal of Surgery | 2017

Microbiological aspects of Fournier's gangrene

Tuncay Yilmazlar; Baris Gulcu; Ozgen Isik; Ersin Ozturk

BACKGROUND Fourniers gangrene (FG) is a devastating disease that is characterized by necrotizing fasciitis of the perineal, genital, or perianal region. Broad-spectrum antibiotics are the key component of its treatment. However, there is paucity of data regarding the optimal empirical antibiotherapy for FG. MATERIALS AND METHODS Data from patients who underwent surgery for FG between January 2007 and December 2012 were retrieved from a prospectively collected departmental FG database. Demographics, clinical characteristics, causative pathogens and drug susceptibility/resistance were evaluated. RESULTS Fifty patients with a median age of 58.5 (22-83) years were included. The perianal origin (58%) was most commonly affected. A positive growth was found in specimen cultures of 48 (96%) patients. The median number of bacterial strains that grew in the cultures was 3 (0-10). Amikacin was the antibiotic with the highest frequency of sensitivity (74%), while the highest resistance was observed against ampicillin-sulbactam (64%). Escherichia coli was the most common microorganism (72%). Acinetobacter baumannii and Klebsiella pneumonia were significantly more common in patients who required mechanical ventilation. The mortality rate was 26%. An Uludag Fourniers Gangrene Severity Index (UFGSI) score of >9.5 and ventilatory support requirement were factors associated with an increased rate of mortality. Acinetobacter baumannii was the only microorganism which was associated with an increased mortality rate. CONCLUSION Causative pathogens in FG appeared to be shifting; thus, empirical antibiotic treatment for this disease should be modified. We recommend 3rd-generation cephalosporin, metronidazole and amikacin for empirical therapy.


Techniques in Coloproctology | 2011

The beneficial effects of preperitoneal catheter analgesia following colon and rectal resections: a prospective, randomized, double-blind, placebo-controlled study

Ersin Ozturk; Aysun Yilmazlar; F. Coskun; Ozgen Isik; Tuncay Yilmazlar


Chirurgia (Bucharest, Romania) | 2015

Surgical Site Infection: Re-assessment of the Risk Factors.

Ozgen Isik; Kaya E; Dundar Hz; Sarkut P


The Turkish journal of gastroenterology | 2010

Small cell carcinoma of the rectum metastasizing to axillary lymph nodes: a case report.

Ozgen Isik; Ersin Ozturk; Eylem Akar; Omer Yerci; Tuncay Yilmazlar


Surgical Laparoscopy Endoscopy & Percutaneous Techniques | 2018

Hand-assisted Laparoscopy: Expensive but Considerable Step Between Laparoscopic and Open Colectomy

Baris Gulcu; Ozgen Isik; Ersin Ozturk; Tuncay Yilmazlar


Pancreas | 2018

Overexpression of the Long Noncoding RNA HomeoboxA Transcript at the Distal Tip Predicts Poor Prognosis in a KRAS-Independent Manner in Periampullary Region Tumors

Ozkan Balcin; Secil Ak Aksoy; Berrin Tunca; Ekrem Kaya; Unal Egeli; Gulcin Tezcan; Nesrin Ugras; Gulsah Cecener; Ozgen Isik; Halit Ziya Dündar; Omer Yerci

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