Erkan Güler

Dr. Erkan Güler

orcid

Research Focus & Metrics

Academic Career Length

10Years (2017-Present)

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

Representative Publications

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9 September 2025 in Journal of Clinical Medicine
Verified
Journal Article
Open access
PDF file
TGTolga Girgin
Tolga Girgin
VSVolkan Sayur
Volkan Sayur
EGErkan Güler
Erkan Güler
CUCan Uc
Can Uc
BGBerk Göktepe
Berk Göktepe
TSTaylan Özgür Sezer
Taylan Özgür Sezer
Background: Intensive Care Units (ICUs) provide critical support for patients after major surgery or acute abdominal conditions. Despite medical advances, mortality remains high in surgical ICU patients. This study aimed to identify clinical and biochemical predictors of mortality in surgical patients admitted to a tertiary ICU. Methods: We conducted a retrospective case–control study on 231 adult general surgery patients admitted to a tertiary anesthesia ICU between January 2018 and December 2023. Patients under 18 years or who underwent solid organ transplantation were excluded. Data collected included demographic, clinical, and laboratory parameters such as the Glasgow Coma Scale (GCS), Acute Physiology and Chronic Health Evaluation II (APACHE II), Sequential Organ Failure Assessment (SOFA), Hemoglobin-Albumin-Lymphocyte-Platelet (HALP) score, neutrophil-to-lymphocyte ratio (NLR), and C-reactive protein (CRP)/albumin ratio. Patients were divided into mortality and survival groups, with subgroup analyses performed for malignancy, sepsis, and trauma. Receiver operating characteristic (ROC) curve and Cox regression analyses were used to identify mortality predictors. Results: The ICU mortality rate was 64.9%. Significant predictors included age ≥ 58 years (odds ratio [OR] 4.56), body mass index (BMI) > 30 kg/m2 (OR 7.62), mean arterial pressure < 70 mmHg (OR 1.66), serum albumin < 21.3 g/L (OR 1.5), APACHE II > 18.5 (OR 2.42), and SOFA > 9.5 (OR 2.68). Mortality was also associated with lower GCS scores, prolonged mechanical ventilation, and inotropic support. The CRP/albumin ratio was significantly elevated in the mortality group (p = 0.024). Other inflammatory markers showed no significant differences. Predictive factors varied among subgroups. Conclusions: Older age, obesity, hypotension, hypoalbuminemia, and high severity scores independently predict mortality in surgical ICU patients. Early risk identification may enhance management and improve outcomes in this population.

20 October 2021 in Turkish Journal of Thoracic and Cardiovascular Surgery
Verified
Journal Article
Open access
VSVolkan Sayur
Volkan Sayur
EGErkan Güler
Erkan Güler
HPHakan Posacıoğlu
Hakan Posacıoğlu
TSTaylan Özgür Sezer
Taylan Özgür Sezer
ÖFÖzgür Fırat
Özgür Fırat
MEMuhtar Sinan Ersin
Muhtar Sinan Ersin
Background: This study aims to investigate incisional hernia incidence and risk factors after abdominal aortic aneurysm and aortic occlusive disease surgery via a midline laparotomy. Methods: A total of 110 patients (66 males, 44 females; mean age: 69.3±8.8 years; range, 36 to 88 years) who underwent open elective surgery for aortoiliac occlusive diseases or abdominal aortic aneurysm between January 2005 and December 2016 were retrospectively analyzed. Both patient groups were compared in terms of surgical procedures, sex, age, American Society o f A nesthesiologists s core ( 1-3), b ody m ass i ndex (<25 vs. ≥25 kg/m 2 ), smoking (non-smoker <1 pack/day, smoking ≥1 pack/day), and time to incisional hernia development. Results: Incisional hernia occurred in 14.3% of the patients operated for aortoiliac occlusive disease and in 17.6% of the patients operated for abdominal aortic aneurysm (p=0.643). Incisional hernia was seen in three (5.7%) of 53 patients with a body mass index of <25 kg/m 2 and was in 15 (26.3%) of 57 patients with a body mass index of ≥25 kg/m 2 (p=0.03). Conclusion: High body mass index is a risk factor for incisional hernia in patients undergoing aortic reconstructive surgery.

13 November 2025 in Scottish Medical Journal
Verified
Journal Article
Closed access
ÖKÖzgür Kılınçarslan
Özgür Kılınçarslan
VSVolkan Sayur
Volkan Sayur
EGErkan Güler
Erkan Güler
RTRecep Temel
Recep Temel
ÖKÖzgün Cevdet Köse
Özgün Cevdet Köse
TSTaylan Özgür Sezer
Taylan Özgür Sezer
Background: Peritoneal carcinomatosis (PC) represents an advanced stage of intra-abdominal malignancies with poor prognosis. Cytoreductive surgery (CRS) combined with hyperthermic intraperitoneal chemotherapy (HIPEC) offers promising outcomes in selected patients. This study evaluated survival and prognostic factors in patients undergoing CRS-HIPEC for malignancy-associated PC. Methods: A retrospective analysis was performed on 116 patients treated with CRS-HIPEC between 2015 and 2023. Data included demographics, tumor origin, peritoneal cancer index (PCI), completeness of cytoreduction (CC) score, complications, and survival outcomes. Kaplan–Meier and Cox regression analyses were used. Results: The mean age was 55.2 years; 61.2% were female. Common primary tumors were colorectal (34.5%), gastric (20.7%), ovarian (17.2%), and appendiceal (16.4%). Mean PCI was 11.9, and complete cytoreduction (CC-0) was achieved in 89.7%. Overall survival was highest in appendiceal (76.9 months) and lowest in gastric cancer (24.7 months). Median disease-free and overall survival were 36 and 43.9 months, respectively. Postoperative complications occurred in 31.8%; mortality was 5.17%. High PCI and incomplete cytoreduction were independently associated with worse survival. Conclusion: CRS-HIPEC provides encouraging survival in selected PC patients, especially with low PCI and complete cytoreduction. Careful patient selection remains key to optimizing outcomes.

10 November 2021 in Biomarkers in Medicine
Verified
Journal Article
Closed access
MKMahmut Bakir Koyuncu
Mahmut Bakir Koyuncu
EGErkan Güler
Erkan Güler
TKTOLGA KÖŞECİ
TOLGA KÖŞECİ
MUMehmet Ali Uçar
Mehmet Ali Uçar
ATANIL TOMBAK
ANIL TOMBAK
CCCagatay Cavusoglu
Cagatay Cavusoglu
Aim: The aim of this study is to determine whether a novel prognostic score can be obtained by including low muscle mass in the international prognostic score (IPS) system. Materials & Methods: Pso... Lay abstract Hodgkin's lymphoma is a cancer that responds well to standard treatments. However, the cancer recurs 30% of the time. Improved scoring systems could help better predict the outcomes of...

28 November 2025 in Current Oncology
Verified
Journal Article
Open access
PDF file
Mustafa BerkeşoğluMustafa Berkeşoğlu
Mustafa Berkeşoğlu
GAGözde Arslan
Gözde Arslan
FTFerah Tuncel
Ferah Tuncel
COCumhur Ozcan
Cumhur Ozcan
ZKZehra Pınar Koç
Zehra Pınar Koç
KEKadir Eser
Kadir Eser
We aimed to develop and internally validate a nomogram to estimate axillary pathological complete response (pCR, ypN0) after neoadjuvant systemic therapy (NAST) in clinically node-positive (cN1–2) breast cancer. In a single-center retrospective cohort of 144 consecutive patients treated with NAST (anti-HER2 as indicated), all underwent standardized pre- and post-NAST 18F-FDG PET/CT and axillary staging (sentinel lymph node biopsy [SLNB], targeted axillary dissection [TAD], or axillary lymph node dissection [ALND]). Axillary pCR occurred in 51.4% (74/144). In a multivariable analysis, independent positive determinants of ypN0 included the triple-negative subtype, Modified PERCIST (SUVmax-based) reduction ≥ 80.70%, pre-NAST tumor-to-axilla SUVmax ratio ≥ 1.21, and residual breast tumor size < 0.5 mm; conversely, conglomerate/matted nodal morphology at diagnosis was inversely associated. The model showed good internal discrimination (AUC 0.857, 95% CI 0.797–0.917) and acceptable calibration (Hosmer–Lemeshow p = 0.425). Exploratory, subtype-restricted signals were observed for inflammatory indices within Luminal B (HER2+) but were not retained in the final model. The resulting nomogram—combining tumor biology, PET/CT response, and pre-NAST nodal features—may support risk stratification for axillary de-escalation after NAST; however, prospective external validation—ideally embedded in ongoing de-escalation frameworks—remains essential before clinical implementation, and the tool should currently be regarded as hypothesis-generating rather than a stand-alone decision aid for routine practice.

18 March 2025 in Lasers in Medical Science
Verified
Journal Article
Open access
PDF file
MDMehmet Ali Demir
Mehmet Ali Demir
TÇTahsin Çolak
Tahsin Çolak
COCumhur Ozcan
Cumhur Ozcan
HIHüseyin Oğuzhan İnAn
Hüseyin Oğuzhan İnAn
EGErkan Güler
Erkan Güler
Aim: This study aimed to compare laser application with sinus curettage against only sinus curettage in the treatment of pilonidal sinus disease (PSD) in terms of postoperative complications, wound healing, and recurrence. Additionally, we aimed to investigate factors associated with wound healing and recurrence after PSD surgery. Patients and methods: This study included patients diagnosed with PSD between February 2019, and September 2022. The patients were randomly assigned to either the laser + curettage (L/C; n = 40) group or the curettage-only (C; n = 40) group. The following data were collected: demographic and anthropometric information, smoking status, comorbidities, number of PSD-related orifices, complicated or uncomplicated disease, prior recurrence, postoperative findings, wound healing problems within 30 days postoperatively, and recurrence within 6 months postoperatively. Results: The L/C and C groups were similar in terms of age and sex distribution. The groups had similar results for postoperative pain, discharge, bleeding, wound healing problems at 30 days, and recurrence at 6 months. Multivariable logistic regression revealed that, high weight and higher orifice count were independently associated with wound healing problems. Additionally, high weight, higher orifice count and prior recurrence were independently associated with recurrence. Conclusion: Combined curettage and laser therapy showed non-significant but broad benefits over curettage alone, but statistical significance was not achieved in any of the adverse findings, as well as wound healing and recurrence. Higher body weight and higher orifice count were associated with both poor wound healing and recurrence, while prior recurrence was another factor associated with recurrence at 6 months.