Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Mehmet Bozbay is active.

Publication


Featured researches published by Mehmet Bozbay.


Angiology | 2015

Neutrophil–Lymphocyte Ratio and Platelet–Lymphocyte Ratio Combination Can Predict Prognosis in Patients With ST-Segment Elevation Myocardial Infarction Undergoing Primary Percutaneous Coronary Intervention

Gökhan Çiçek; Sadık Kadri Açıkgöz; Mehmet Bozbay; Servet Altay; Murat Ugur; Mahmut Uluganyan; Huseyin Uyarel

We assessed the effect of combination of neutrophil–lymphocyte ratio (NLR) and platelet–lymphocyte ratio (PLR) in predicting in-hospital and long-term mortality in patients (n = 2518) undergoing primary percutaneous coronary intervention (pPCI). Cutoff values for NLR and PLR were calculated with receiver–operating characteristic (ROC) curves. If both PLR and NLR were above the threshold, patients were classified as “high risk.” If either PLR or NLR was above the threshold individually, patients were classified as “intermediate risk.” High-risk (n = 693) and intermediate-risk (n = 545) groups had higher in-hospital and long-term mortality (7.2 4% vs 0.7%, P < .001; 14.1, 9.5% vs 4.5%, P < .001, respectively). Classifying patients into intermediate-risk group (hazards ratio [HR]: 1.492, 95% confidence interval [CI]: 1.022-2.178, P = .038) and high-risk group (HR: 1.845, 95% CI: 1.313-2.594, P < .001) was an independent predictor of in-hospital and long-term mortality. The combination of PLR and NLR can be useful for the prediction of in-hospital and long-term mortality in patients undergoing pPCI.


Coronary Artery Disease | 2012

The relationship between red blood cell distribution width and the clinical outcomes in non-ST elevation myocardial infarction and unstable angina pectoris: a 3-year follow-up.

Mehmet Gul; Huseyin Uyarel; Mehmet Ergelen; Denizhan Karaçimen; Murat Uğur; Ayca Turer; Mehmet Bozbay; Erkan Ayhan; Ozgur Akgul; Nevzat Uslu

ObjectivesRed blood cell distribution width (RDW), a marker of variation in the size of the circulating red blood cells, was evaluated in patients with non-ST elevation myocardial infarction (NSTEMI) and unstable angina pectoris (UAP). BackgroundHigher RDW is associated with mortality in the general population, particularly in those with symptomatic cardiovascular disease, and heart failure. We hypothesized that admission RDW might be predictive of adverse clinical outcomes for patients with NSTEMI and UAP. MethodsWe prospectively enrolled 310 patients with NSTEMI and UAP (mean age 59.3±11.9 years; 236 men, 74 women) in this study. Admission RDW was measured and the study population was classified on the basis of RDW tertiles. A high RDW (n=95) was defined as a value in the upper third tertile (>14%) and a low RDW (n=215) was defined as any value in the lower two tertiles (⩽14%). The patients were followed up for clinical outcomes for up to 3 years after discharge. ResultsIn the Kaplan–Meier survival analysis, the 3-year mortality rate was 19% in the high RDW group versus 5.6% in the low RDW group (P<0.001). In the receiver operating characteristic curve analysis, an RDW value of more than 14% yielded a sensitivity of 60% and a specificity of 72.5%. A significant association was found between a high admission RDW level and the adjusted risk of cardiovascular mortality (hazard ratio: 3.2, 95% confidence interval: 1.3–7.78, P=0.01). ConclusionRDW is a readily available clinical laboratory value associated with long-term cardiovascular mortality in NSTEMI and UAP.


Blood Coagulation & Fibrinolysis | 2014

The relationship between platelet to lymphocyte ratio and the clinical outcomes in ST elevation myocardial infarction underwent primary coronary intervention.

Murat Ugur; Mehmet Gul; Mehmet Bozbay; Gökhan Çiçek; Huseyin Uyarel; Bayram Köroğlu; Mahmut Uluganyan; Serkan Aslan; Eyyup Tusun; Ozgur Surgit; Emre Akkaya; Mehmet Eren

The platelet to lymphocyte ratio (PLR) has been investigated as a new predictor for cardiovascular risk. The aim of the present study was to investigate the prognostic role admission PLRat admission in predicting in-hospital and early mortality in patients presenting with ST segment elevation myocardial infarction (STEMI). A total of 639 consecutive patients with STEMI who underwent primary percutaneous coronary intervention (PCI) were included. The study population was divided into tertiles on the basis of PLR values at the admission. A high PLR (N = 213) was defined as a value in the upper third tertile (PLR >174.9) and a low PLR (N = 426) was defined as any value in the lower two tertiles (PLR ⩽174.9). The patients were followed for clinical outcomes for up to 6 months after discharge. In Kaplan–Meier survival analysis, the rate of 6-month all-cause deaths was 7% in the high PLR group versus 3% in the low PLR group (P = 0.03). In multivariate analyses, a significant association was noted between high PLR levels and the adjusted risk of 6-month all-cause deaths (odds ratio = 2.51, 95% confidence interval = 1.058–5.95; P = 0.03). PLR is a readily available clinical laboratory value associated with 6-month all-cause death in patients with STEMI who undergo primary PCI.


Acta Cardiologica | 2010

Which is worst in patients undergoing primary angioplasty for acute myocardial infarction? Hyperglycaemia? Diabetes mellitus? Or both?

Mehmet Ergelen; Huseyin Uyarel; Gokhan Cicek; Turgay Isik; Damirbek Osmonov; Zeki Yüksel Günaydın; Mehmet Bozbay; Ayca Turer; Mehmet Gul; Gul Babacan Abanonu; Erkan İlhan

Objective— The objective of this study was to evaluate the effect of admission hyperglycaemia and/or diabetes mellitus (DM) on the outcomes of primary percutaneous coronary intervention (PCI) for ST-segment elevation myocardial infarction (STEMI).Methods— 2482 consecutive patients with STEMI (mean age 56.5 ± 11.9, years, 2064 men) undergoing primary PCI between October 2003 and March 2008 were retrospectively enrolled into the present study. Hyperglycaemia was defined as a venous plasma glucose level > 200 mg/dl on admission. Patients were classified into four groups: non-diabetic/non-hyperglycaemic (NDNH, n = 1806) patients; diabetic/non-hyperglycaemic (DNH, n = 271) patients; non-diabetic/hyperglycaemic (NDH, n = 64); and diabetic/hyperglycaemic (DH, n = 341).Results— In-hospital mortality was higher in NDH (12.5%) compared to DH (8.5%), DNH (6.3%), and NDNH (0.9%) patients (P < 0.001). The composite end points including death, reinfarction, and target-vessel revascularization (major adverse cardiac eve...


Psychiatry Investigation | 2016

Increased Neutrophil/Lymphocyte Ratio in Patients with Depression is Correlated with the Severity of Depression and Cardiovascular Risk Factors.

Esra Aydin Sunbul; Murat Sunbul; Omer Yanartas; Fatma Fariha Cengiz; Mehmet Bozbay; Ibrahim Sari; Hüseyin Güleç

Objective Chronic inflammation is associated with cardiovascular (CV) risk factors and psychiatric disorders. The neutrophil to lymphocyte ratio (NLR) has been investigated as a new biomarker for systemic inflammatory response. The aim of the study is to investigate the relation of NLR with severity of depression and CV risk factors. Methods The study population consisted of 256 patients with depressive disorder. Patients were evaluated with the Hamilton Rating Scale for Depression (HAM-D). Patients were classified into four groups according to their HAM-D score such as mild, moderate, severe, and very severe depression. Patients were also evaluated in terms of CV risk factors. Results Patients with higher HAM-D score had significantly higher NLR levels compared to patients with lower HAM-D score. Correlation analysis revealed that severity of depression was associated with NLR in depressive patients (r=0.333, p<0.001). Patients with one or more CV risk factors have significantly higher NLR levels. Correlation analysis revealed that CV risk factors were associated with NLR in depressive patients (r=0.132, p=0.034). In logistic regression analyses, NLR levels were an independent predictor of severe or very severe depression (odds ratio: 3.02, 95% confidence interval: 1.867-4.884, p<0.001). A NLR of 1.57 or higher predicted severe or very severe depression with a sensitivity of 61.4% and specificity of 61.2%. Conclusion Higher HAM-D scores are associated with higher NLR levels in depressive patients. NLR more than 1.57 was an independent predictor of severe or very severe depression. A simple, cheap white blood cell count may give an idea about the severity of depression.


Angiology | 2014

Admission Hyperglycemia Predicts Inhospital Mortality and Major Adverse Cardiac Events After Primary Percutaneous Coronary Intervention in Patients Without Diabetes mellitus

Ahmet Ekmekçi; Gökhan Çiçek; Mahmut Uluganyan; Barış Güngör; Faizel Osman; Kazım Serhan Özcan; Mehmet Bozbay; Gokhan Ertas; Aycan Esen Zencirci; Nurten Sayar; Mehmet Eren

Admission hyperglycemia is associated with high inhospital and long-term adverse events in patients that undergo primary percutaneous coronary intervention (PCI). We aimed to evaluate whether hyperglycemia predicts inhospital mortality. We prospectively analyzed 503 consecutive patients. The patients were divided into tertiles according to the admission glucose levels. Tertile I: glucose <118 mg/dL (n = 166), tertile II: glucose 118 to 145 mg/dL (n = 168), and tertile III: glucose >145 mg/dL (n = 169). Inhospital mortality was 0 in tertile I, 2 in tertile II, and 9 in tertile III (P < .02). Cardiogenic shock occurred more frequently in tertile III compared to tertiles I and II (10% vs 4.1% and 0.6%, respectively, P = .01). Multivariate logistic regression analysis revealed that patients in tertile III had significantly higher risk of inhospital major adverse cardiac events compared to patients in tertile I (odds ratio: 9.55, P < .02). Admission hyperglycemia predicts inhospital adverse cardiac events in mortality and acute ST-segment elevation myocardial infarction in patients that underwent primary PCI.


Coronary Artery Disease | 2011

Patients with anemia on admission who have undergone primary angioplasty for ST elevation myocardial infarction: in-hospital and long-term clinical outcomes.

Erkan Ayhan; Fatih Aycicek; Huseyin Uyarel; Mehmet Ergelen; Gökhan Çiçek; Mehmet Gul; Damirbek Osmonov; Ersin Yildirim; Mehmet Bozbay; Murat Uğur; Turgay Isik; Tuna Tezel

ObjectiveWe investigated the in-hospital and long-term follow-up (mean 21 months) results of patients with and without anemia on admission and who have undergone primary angioplasty for ST elevation myocardial infarction (STEMI). Study designA total of 2509 patients (616 patients with anemia on admission, 1893 patients without anemia on admission), who were treated with primary angioplasty due to STEMI, were included in this study. Demographics and basic clinical features of the patients, outcomes of the primary angioplasty procedures, and clinical course of the patients during and a mean period of 21-month follow-up after hospitalization were retrospectively evaluated. All the parameters were compared between anemic and nonanemic groups. ResultsThe mean age of the patients in anemic group was found to be higher than nonanemic group (61.5±11.4 vs. 54.8±11.4, P<0.001). The rates of death, major cardiac events, and severe cardiac insufficiency were significantly higher in anemic patients during hospitalization period. Moreover, frequency of death was also higher in anemic patients when compared with the nonanemic ones after a mean follow-up period of 21 months (P<0.001). Anemia on admission is an independent predictive factor for mortality in patients with STEMI who were treated with primary angioplasty (odds ratio: 2.2; 95% confidence interval: 1.2–4.0; P<0.009). ConclusionPatients with anemia on admission initially have high-risk profiles regarding their worse clinical outcomes during and 21 months after hospitalization. In accordance with the suggestion of the evidence-based medicine we conclude that etiology of anemia should be meticulously investigated and the oxygenization of the tissue should be provided with the appropriate treatment.


Journal of Critical Care | 2014

The independent association of plateletcrit with long-term outcomes in patients undergoing primary percutaneous coronary intervention

Murat Ugur; Erkan Ayhan; Mehmet Bozbay; Gökhan Çiçek; Mehmet Ergelen; Turgay Isik; Huseyin Uyarel; Gokhan Ertas; Yasin Çakıllı; Ahmet Öz; Muhammed Keskin; Osman Zikrullah Şahin; Elif İclal Çekirdekçi; Mehmet Eren

PURPOSE Platelets play a key role in the genesis of thrombosis. Plateletcrit (PCT) provides complete information on total platelet mass. The relationship between PCT values and long-term outcomes in patients with ST-segment elevation myocardial infarction (STEMI) who undergo primary angioplasty is not known. We sought to determine the effect of PCT values on the outcomes of primary angioplasty for STEMI. METHODS Overall, 2572 consecutive STEMI patients (mean age, 56.6±11.8 years) undergoing primary percutaneous coronary intervention were enrolled retrospectively into the present study. Plateletcrit at admission was measured as part of the automated complete blood count. Patients were classified into 2 groups: high PCT (>0.237, n=852) and nonhigh PCT (<0.237, n=1720). Clinical characteristics and in-hospital and long-term (median, 21 months) outcomes of primary angioplasty were analyzed. RESULTS A higher in-hospital shock rate was observed among patients with high PCT values compared with those with nonhigh PCT values (6.5 vs 3.8%, respectively; P=.003). The long-term cardiovascular prognosis was worse for patients with high PCT values (Kaplan-Meier, log-rank test; P=.007). We used Cox proportional hazard models to examine the association between PCT and adverse clinical outcomes. High PCT values were also an independent predictor of cardiovascular mortality (hazard ratio, 1.85; 95% confidence interval, 1.061-3.22; P=.03). CONCLUSION High PCT values on admission are independently associated with long-term adverse outcomes in patients with STEMI who undergo primary angioplasty.


Coronary Artery Disease | 2016

The relationship between admission monocyte HDL-C ratio with short-term and long-term mortality among STEMI patients treated with successful primary PCI.

Gökhan Çiçek; Harun Kundi; Mehmet Bozbay; Çağrı Yayla; Huseyin Uyarel

BackgroundMonocyte to HDL-C ratio (MHR) represents a simple assessment method for inflammatory status. The aim of the present study was to investigate whether MHR may be of short-term and long-term prognostic value in ST-elevation myocardial infarction (STEMI) patients who have undergone a primary percutaneous coronary intervention (PCI). Materials and methodsA total of 682 consecutive STEMI patients who underwent successful primary PCI between March 2013 and September 2015 were included in this study. Patients were divided into groups according to their admission MHR values. Clinical follow-up data of participating patients were obtained through an outpatient examination 30 months after PCI. ResultsThe study population included 172 patients with an MHR less than 1.16 (Q1), 169 patients with an MHR 1.16–1.59 (Q2), 161 patients with an MHR 1.60–2.21 (Q3), and 180 patients with an MHR greater than 2.21 (Q4). Rates of in-hospital mortality, major adverse cardiovascular events, cardiopulmonary resuscitation, dialysis, use of inotropic agents, shock, late mortality, target vessel revascularization, stroke, and reinfarct were higher in the Q4 group compared with the other MHR quartile groups. ConclusionThe results of this study have indicated that admission MHR is associated independently and significantly with short-term and long-term mortality in STEMI patients who undergo successful primary PCI.


Kardiologia Polska | 2015

Relation of neutrophil-to-lymphocyte and platelet-to-lymphocyte ratio with coronary artery disease severity in patients undergoing coronary angiography.

Ibrahim Sari; Murat Sunbul; Ceyhun Mammadov; Erdal Durmus; Mehmet Bozbay; Tarik Kivrak; Fethullah Gerin

BACKGROUND Atherosclerosis is a chronic systemic inflammatory disease. Neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) are systemic inflammatory markers that are correlated with poor cardiovascular outcomes. AIM To explore the relation of NLR and PLR with severity of coronary artery disease (CAD). METHODS The study population consisted of 180 consecutive patients who underwent elective coronary angiography (CAG). While 100 patients (22 female, mean age: 60.6 ± 12.6 years) had abnormal CAG, 80 patients (44 female, mean age: 57.2 ± 10.9 years) had normal CAG. NLR and PLR were calculated as the ratio of neutrophil count to lymphocyte count and as the ratio of platelet count to lymphocyte count, respectively. RESULTS Although age distribution was similar between the two groups (p = 0.073), female gender was significantly higher in the normal CAG group (p < 0.001). Patients with abnormal CAG had significantly higher NLR and PLR when compared to patients with normal CAG (3.7 ± 2.6 vs. 2.2 ± 1.7, p < 0.001 and 125.9 ± 72.3 vs. 102.6 ± 33.8, p = 0.027, respectively). NLR and PLR were significantly correlated with SYNTAX score and GENSINI score. In logistic regression analyses, only NLR (odds ratio: 1.576, confidence interval: 1.198-2.072, p = 0.001) was an independent predictor of CAD. An NLR of 2.3 or higher predicted the CAD with a sensitivity of 66% and specificity of 70%. CONCLUSIONS NLR and PLR seem to be a simple method to predict severity of CAD in patients undergoing elective CAG, and it may be part of cardiovascular examination before CAG.

Collaboration


Dive into the Mehmet Bozbay's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Researchain Logo
Decentralizing Knowledge