Tonguc Utku Yilmaz

Prof. Dr. Tonguc Utku Yilmaz

orcid

Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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16 April 2018 in World Journal of Emergency Surgery
Verified
Journal Article
Open access
PDF file
Massimo SartelliMassimo Sartelli
Massimo Sartelli
GBGian Luca Baiocchi
Gian Luca Baiocchi
Salomone Di SaverioSalomone Di Saverio
Salomone Di Saverio
FFFrancesco Ferrara
Francesco Ferrara
FLFrancesco M. Labricciosa
Francesco M. Labricciosa
Fausto CatenaFausto Catena
Fausto Catena
Acute appendicitis (AA) is the most common surgical disease, and appendectomy is the treatment of choice in the majority of cases. A correct diagnosis is key for decreasing the negative appendectomy rate. The management can become difficult in case of complicated appendicitis. The aim of this study is to describe the worldwide clinical and diagnostic work-up and management of AA in surgical departments. This prospective multicenter observational study was performed in 116 worldwide surgical departments from 44 countries over a 6-month period (April 1, 2016–September 30, 2016). All consecutive patients admitted to surgical departments with a clinical diagnosis of AA were included in the study. A total of 4282 patients were enrolled in the POSAW study, 1928 (45%) women and 2354 (55%) men, with a median age of 29 years. Nine hundred and seven (21.2%) patients underwent an abdominal CT scan, 1856 (43.3%) patients an US, and 285 (6.7%) patients both CT scan and US. A total of 4097 (95.7%) patients underwent surgery; 1809 (42.2%) underwent open appendectomy and 2215 (51.7%) had laparoscopic appendectomy. One hundred eighty-five (4.3%) patients were managed conservatively. Major complications occurred in 199 patients (4.6%). The overall mortality rate was 0.28%. The results of the present study confirm the clinical value of imaging techniques and prognostic scores. Appendectomy remains the most effective treatment of acute appendicitis. Mortality rate is low.

16 December 2015 in World Journal of Emergency Surgery
Verified
Journal Article
Open access
PDF file
Massimo SartelliMassimo Sartelli
Massimo Sartelli
FAFikri M Abu-Zidan
Fikri M Abu-Zidan
Fausto CatenaFausto Catena
Fausto Catena
EGEwen Griffiths
Ewen Griffiths
Salomone Di SaverioSalomone Di Saverio
Salomone Di Saverio
LALuca Ansaloni
Luca Ansaloni
To validate a new practical Sepsis Severity Score for patients with complicated intra-abdominal infections (cIAIs) including the clinical conditions at the admission (severe sepsis/septic shock), the origin of the cIAIs, the delay in source control, the setting of acquisition and any risk factors such as age and immunosuppression. The WISS study (WSES cIAIs Score Study) is a multicenter observational study underwent in 132 medical institutions worldwide during a four-month study period (October 2014-February 2015). Four thousand five hundred thirty-three patients with a mean age of 51.2 years (range 18–99) were enrolled in the WISS study. Univariate analysis has shown that all factors that were previously included in the WSES Sepsis Severity Score were highly statistically significant between those who died and those who survived (p < 0.0001). The multivariate logistic regression model was highly significant (p < 0.0001, R2 = 0.54) and showed that all these factors were independent in predicting mortality of sepsis. Receiver Operator Curve has shown that the WSES Severity Sepsis Score had an excellent prediction for mortality. A score above 5.5 was the best predictor of mortality having a sensitivity of 89.2 %, a specificity of 83.5 % and a positive likelihood ratio of 5.4. WSES Sepsis Severity Score for patients with complicated Intra-abdominal infections can be used on global level. It has shown high sensitivity, specificity, and likelihood ratio that may help us in making clinical decisions.

15 July 2019 in World Journal of Emergency Surgery
Verified
Journal Article
Open access
PDF file
Massimo SartelliMassimo Sartelli
Massimo Sartelli
FAFikri M Abu-Zidan
Fikri M Abu-Zidan
FLFrancesco M. Labricciosa
Francesco M. Labricciosa
YKYoram Kluger
Yoram Kluger
ACand Federico Coccolini
and Federico Coccolini
Fausto CatenaFausto Catena
Fausto Catena
Timing and adequacy of peritoneal source control are the most important pillars in the management of patients with acute peritonitis. Therefore, early prognostic evaluation of acute peritonitis is paramount to assess the severity and establish a prompt and appropriate treatment. The objectives of this study were to identify clinical and laboratory predictors for in-hospital mortality in patients with acute peritonitis and to develop a warning score system, based on easily recognizable and assessable variables, globally accepted. This worldwide multicentre observational study included 153 surgical departments across 56 countries over a 4-month study period between February 1, 2018, and May 31, 2018. A total of 3137 patients were included, with 1815 (57.9%) men and 1322 (42.1%) women, with a median age of 47 years (interquartile range [IQR] 28–66). The overall in-hospital mortality rate was 8.9%, with a median length of stay of 6 days (IQR 4–10). Using multivariable logistic regression, independent variables associated with in-hospital mortality were identified: age > 80 years, malignancy, severe cardiovascular disease, severe chronic kidney disease, respiratory rate ≥ 22 breaths/min, systolic blood pressure < 100 mmHg, AVPU responsiveness scale (voice and unresponsive), blood oxygen saturation level (SpO2) < 90% in air, platelet count < 50,000 cells/mm3, and lactate > 4 mmol/l. These variables were used to create the PIPAS Severity Score, a bedside early warning score for patients with acute peritonitis. The overall mortality was 2.9% for patients who had scores of 0–1, 22.7% for those who had scores of 2–3, 46.8% for those who had scores of 4–5, and 86.7% for those who have scores of 7–8. The simple PIPAS Severity Score can be used on a global level and can help clinicians to identify patients at high risk for treatment failure and mortality.

16 May 2018 in European Journal of Breast Health
Verified
Journal Article
Closed access
TYTonguc Utku Yilmaz
Tonguc Utku Yilmaz
BGBora Gurel
Bora Gurel
SGSertaç Ata Güler
Sertaç Ata Güler
MBMehmet Ali Baran
Mehmet Ali Baran
BEBusra Ersan
Busra Ersan
ZUZafer Utkan
Zafer Utkan
Objective: Idiopathic granulomatous mastitis is a breast disease without a definitive etiology. There are no definitive classifications, scoring systems or certitudes. The aim of this study is to define the factors related to the recurrence and design a scoring system. Material and Methods: Patients who were admitted to the general surgery department with symptoms of granulomatous mastitis were evaluated by ultrasonography and underwent antibiotic therapy. Granulomatous mastitis is diagnosed by core biopsy and treated with steroid therapy. Patients without improvement underwent surgery and were included in the study. In total, 53 patients were included in the study. There were 8 recurrent cases. Factors related with recurrences were defined. Results: Number of births over 2, duration of lactation more than 18 months, body mass index greater than 31, having fistula in physical examination, abscess collection in ultrasonographic examination, and luminal inflammation score over 2 were scored as 1. Severity score in recurrent cases were 5.1 +/- 0.6 whereas 1.9 +/- 1.0 in nonrecurrent cases. Conclusion: Granulomatous mastitis score is a tool targeted at predicting the risk of recurrences. The patients with these factors are more prone for recurrences.

1 November 2017 in Clinical and Experimental Gastroenterology
Verified
Journal Article
Open access
PDF file
TYTonguc Utku Yilmaz
Tonguc Utku Yilmaz
RKRamazan Kozan
Ramazan Kozan
Duodenal and jejunal Dieulafoy's lesions: optimal management Tonguç Utku Yılmaz,1 Ramazan Kozan2 1Acibadem University Atakent Hospital, Organ Transplantation Unit, Istanbul, Turkey, 2Eren Hospital, General Surgery Unit, Istanbul, Turkey Dieulafoyâ??s lesions (DLs) are rare and cause gastrointestinal bleeding resulting from erosion of dilated submucosal vessels. The most common location for DL is the stomach, followed by duodenum. There is little information about duodenal and jejunal DLs. Challenges for diagnosis and treatment of Dieulafoyâ??s lesions include the rare nature of the disease, asymptomatic patients, bleeding symptoms often requiring rapid diagnosis and treatment in symptomatic patients, variability in the diagnosis and treatment methods resulting from different lesion locations, and the risk of re-bleeding. For these reasons, there is no universal consensus about the diagnosis and treatment approach. There are few published case reports and case series recently published. Most duodenal DLs are not evaluated seperately in the studies, which makes it difficult to determine the optimal model. In this study, we summarize the general aspects and recent approaches used to treat duodenal DL. Keywords: Dieulafoyâ??s lesion, gastrointestinal bleeding, duodenum, endoscopy

12 December 2014 in Turkish Journal of Surgery
Verified
Journal Article
Closed access
RKRamazan KOZAN
Ramazan KOZAN
MGMerter Gulen
Merter Gulen
TYTonguc Utku Yilmaz
Tonguc Utku Yilmaz
SLSezai Leventoglu
Sezai Leventoglu
EYErdal Yilmaz
Erdal Yilmaz
Dieulafoy lesion should be considered in massive gastrointestinal bleeding that may be difficult to localize. If the endoscopic and angiographic approaches fail, surgery must be considered according to the patient's clinical condition within an appropriate time. Although mostly seen in the stomach of old male patients with co-morbidities, here we presented a Dieulafoy lesion in the jejunum of a 21-year-old female patient without any significant comorbidity. After endoscopic and angiographic attempts, surgical resection with the help of intraoperative endoscopy was performed. It was shown that perioperative endoscopy may reveal the localization of jejunal bleedings and may guide the definitive treatment.