Türkay Özcan | Mersin University (original) (raw)

Papers by Türkay Özcan

Schweizerische Medizinische Wochenschrift, Nov 14, 2009

Background: Prostate specific antigen (PSA) is the most important biochemical marker in the diagn... more Background: Prostate specific antigen (PSA) is the most important biochemical marker in the diagnosis and follow-up of patients with prostate cancer. In recent years, a relationship between PSA levels and cardiovascular conditions has been described. However, no study has investigated the PSA levels after coronary stenting. Aim: To investigate the impact of coronary stent implantation on serum total PSA (tPSA) and free PSA (fPSA) levels. Methods: This study involved 60 men who underwent coronary angiography for suspected coronary artery disease. Of these, 25 were diagnosed as having angiographically normal coronary arteries (Group 1) and 35 underwent coronary stent implantation (Group 2). Serum tPSA and fPSA levels and f/tPSA ratios were determined in all patients immediately before the intervention and 24 hours and 30 days after the procedure. Results: In Group 1, there was no statistically significant change in the values of tPSA, fPSA and f/tPSA ratio before and after coronary angiography (p >0.05). In Group 2, tPSA and fPSA values 24 hours after stent implantation were significantly higher than the values at the baseline (p <0.01), whereas f/tPSA ratio did not change (p >0.05). Compared with the baseline, there was no statistically significantly difference in the PSA values 30 days after stent implantation (p >0.05). Conclusions: This study demonstrated that serum tPSA and fPSA levels are increased after coronary stent implantation, but f/tPSA ratio is not affected. The findings suggest that serum tPSA and fPSA levels should not be used for the diagnosis of prostate cancer during the first 30 days after coronary stenting.

InTech eBooks, Feb 1, 2012

Türk kardiyoloji derneği arşivi, Oct 1, 2009

Capsaicin and related compounds are called capsaicinoids and are produced as a secondary metaboli... more Capsaicin and related compounds are called capsaicinoids and are produced as a secondary metabolite by chili peppers, which are plants that belong to the genus Capsicum. Topical capsaicin is an alternative application in patients with muscle-skeletal pain, who do not tolerate nonsteroidal anti-inflammatory drugs because of side effects. Capsaicin is a potent algesic substance which, when applied topically or injected into the skin, can produce pain, hyperalgesia, and analgesia. [1] Capsaicin seems to have quite complex neurochemical effects on the nervous system. When applied directly to an area of pain source, capsaicin empties the stores of inflammatory mediators from the nerve endings so that they can no longer transmit

Age and Ageing

Background Frailty is a medical syndrome characterised by reduced physiological reserve and incre... more Background Frailty is a medical syndrome characterised by reduced physiological reserve and increased vulnerability to stressors. Data regarding the relationship between frailty and atrial fibrillation (AF) are still inconsistent. Objectives We aim to perform a comprehensive evaluation of frailty in a large European cohort of AF patients. Methods A 40-item frailty index (FI) was built according to the accumulation of deficits model in the AF patients enrolled in the ESC-EHRA EORP-AF General Long-Term Registry. Association of baseline characteristics, clinical management, quality of life, healthcare resources use and risk of outcomes with frailty was examined. Results Among 10,177 patients [mean age (standard deviation) 69.0 (11.4) years, 4,103 (40.3%) females], 6,066 (59.6%) were pre-frail and 2,172 (21.3%) were frail, whereas only 1,939 (19.1%) were considered robust. Baseline thromboembolic and bleeding risks were independently associated with increasing FI. Frail patients with AF...

Swiss Medical Weekly

BMC Medicine

Background Clinical complexity is increasingly prevalent among patients with atrial fibrillation ... more Background Clinical complexity is increasingly prevalent among patients with atrial fibrillation (AF). The ‘Atrial fibrillation Better Care’ (ABC) pathway approach has been proposed to streamline a more holistic and integrated approach to AF care; however, there are limited data on its usefulness among clinically complex patients. We aim to determine the impact of ABC pathway in a contemporary cohort of clinically complex AF patients. Methods From the ESC-EHRA EORP-AF General Long-Term Registry, we analysed clinically complex AF patients, defined as the presence of frailty, multimorbidity and/or polypharmacy. A K-medoids cluster analysis was performed to identify different groups of clinical complexity. The impact of an ABC-adherent approach on major outcomes was analysed through Cox-regression analyses and delay of event (DoE) analyses. Results Among 9966 AF patients included, 8289 (83.1%) were clinically complex. Adherence to the ABC pathway in the clinically complex group reduced...

European Journal of Internal Medicine

HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

European Journal of Internal Medicine, 2022

BACKGROUND Cardiac troponins (cTn) have been reported to be predictors for adverse outcomes in at... more BACKGROUND Cardiac troponins (cTn) have been reported to be predictors for adverse outcomes in atrial fibrillation (AF), patients, but their actual use is still unclear. AIM To assess the factors associated with cTn testing in routine practice and evaluate the association with outcomes. METHODS Patients enrolled in the ESC-EHRA EORP-AF General Long-Term Registry were stratified into 3 groups according to cTn levels as (i) cTn not tested, (ii) cTn in range (≤99th percentile), (iii) cTn elevated (>99th percentile). The composite outcome of any thromboembolism /any acute coronary syndrome/cardiovascular (CV) death, defined as Major Adverse Cardiovascular Events (MACE) and all-cause death were the main endpoints. RESULTS Among 10 445 AF patients (median age 71 years, 40.3% females) cTn were tested in 2834 (27.1%). cTn was elevated in 904/2834 (31.9%) and in-range in 1930/2834 (68.1%) patients. Female sex, in-hospital enrollment, first-detected AF, CV risk factors, history of coronary artery disease, and atypical AF symptoms were independently associated with cTn testing. Elevated cTn were independently associated with a higher risk for MACE (Model 1, hazard ratio [HR] 1.74, 95% confidence interval [CI] 1.40-2.16, Model 2, HR 1.62, 95% CI 1.28-2.05; Model 3 HR 1.76, 95% CI 1.37-2.26) and all-cause death (Model 1, HR 1.45, 95% CI 1.21-1.74; Model 2, HR 1.36, 95% CI 1.12-1.66; Model 3, HR 1.38, 95% CI 1.12-1.71). CONCLUSIONS Elevated cTn levels were associated with an increased risk of all-cause mortality and adverse CV events. Clinical factors that might enhance the need to rule out CAD were associated with cTn testing.

European Heart Journal, 2021

Background Management of patients with atrial fibrillation (AF) and malignancy is a clinical chal... more Background Management of patients with atrial fibrillation (AF) and malignancy is a clinical challenge given the paucity of evidence supporting the appropriate clinical management. Purpose To evaluate the outcomes of patients with active or prior malignancy in a large contemporary cohort of European AF patients. Methods We analyzed patients enrolled in the ESC-EHRA EORP-AF General Long-Term Registry. We stratified the population into three categories (i) No Malignancy (NoM) (ii) Prior Malignancy (PriorM) and (iii) Active Malignancy (ActM). The primary outcome for this analysis was all-cause death among the three groups. The association between anticoagulant treatment, all-cause death and haemorrhagic events was also evaluated. Results Among the original 11 096 AF patients enrolled, 10 383 were included in this analysis (median age 71 years (interquartile range [IQR] 63–77, males 59.7%). Of these, 9 597 (92.4%) were NoM patients, 577 (5.6%) PriorM and 209 (2%) ActM. Patients with mal...

The Lancet, 2019

Background Patients with stable coronary artery disease and diabetes with previous percutaneous c... more Background Patients with stable coronary artery disease and diabetes with previous percutaneous coronary intervention (PCI), particularly those with previous stenting, are at high risk of ischaemic events. These patients are generally treated with aspirin. In this trial, we aimed to investigate if these patients would benefit from treatment with aspirin plus ticagrelor. Methods The Effect of Ticagrelor on Health Outcomes in diabEtes Mellitus patients Intervention Study (THEMIS) was a phase 3 randomised, double-blinded, placebo-controlled trial, done in 1315 sites in 42 countries. Patients were eligible if 50 years or older, with type 2 diabetes, receiving anti-hyperglycaemic drugs for at least 6 months, with stable coronary artery disease, and one of three other mutually non-exclusive criteria: a history of previous PCI or of coronary artery bypass grafting, or documentation of angiographic stenosis of 50% or more in at least one coronary artery. Eligible patients were randomly assigned (1:1) to either ticagrelor or placebo, by use of an interactive voice-response or web-response system. The THEMIS-PCI trial comprised a prespecified subgroup of patients with previous PCI. The primary efficacy outcome was a composite of cardiovascular death, myocardial infarction, or stroke (measured in the intention-to-treat population).

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Anadolu kardiyoloji dergisi : AKD = the Anatolian journal of cardiology, 2004

We aimed to investigate peripheral vascular complications and their relation with treatment and c... more We aimed to investigate peripheral vascular complications and their relation with treatment and clinical parameters in percutaneous transluminal coronary angioplasty (PTCA) patients. We included into the study 321 patients (aged 57+/-11 years) underwent PTCA between November 2001-August 2002. The age, gender, glycoprotein 2b/3a use, thrombolytic use, intraaortic balloon treatment, transient pacemaker treatment, reintervention history, hypertension, diabetes mellitus, smoking status, family history and the correlations of these parameters with local vascular complications were assessed in all patients. Pseudoaneurysm incidence was significantly correlated with; age [(n=13, 68.0%) p=0.0001, OR 8.38], female gender [(n=12, 63.1%) p<0.015, OR 0.32], reintervention [(n=10, 52.1%) p<0.004, OR 3.6], venous sheath usage [(n=12, 63%) p<0.0001, OR 9.07], thrombolytic treatment [(n=5, 26.3%) p<0.0001, OR 7.9], and intraaortic balloon adjustment [(n=6, 31.5%) p<0.0001, OR 7.2]. N...

Value in Health, 2014

Objectives: This study aimed to determine anti-coagulant treatment patterns and stroke-and bleedi... more Objectives: This study aimed to determine anti-coagulant treatment patterns and stroke-and bleeding-related risk factors and to evaluate quality of life (QoL) in nonvalvular atrial fibrillation (NVAF) patients. MethOds: This multicenter (12-centers), observational study included ≥ 18 year-old patients (n= 213) diagnosed with NVAF. CHADS 2 , CHA 2 DS 2-VASc, HAS-BLED scores and EQ-5D scale were used to assess risk factors and QoL and clinical features were recorded at baseline, and 6 th and 12 th months. Results: The rate of adverse events was 64.7%, major bleeding was 10.8%, stroke was 5.9%, and hospitalization was 25.5% in one-year follow-up. The patients' treatment patterns were grouped as warfarin, new oral anti-coagulant (NOAC) (dabigatran, rivaroxaban), and antiplatelet agents (AA) (acetylsalicylic acid, clopidogrel). Patient numbers for the groups at baseline, and 6 th and 12 th months, respectively, were 92, 74, 41 for warfarin, 2, 13, 14 for NOAC, and 39, 29, 26 for AA. The distribution of patients in the warfarin, NOAC, and AA groups regarding CHADS 2 ≥ 2 was 53.8% (n= 49), 50% (n= 1), and 63.2% (n= 24), respectively; regarding CHA 2 DS 2-VASc≥ 2 was 86.8% (n= 79), 50% (n= 1), and 89.5% (n= 34), respectively; and regarding HAS-BLED≥ 3 (high bleeding risk) was 23.1% (n= 21), 0% (n= 0), and 18.4% (n= 7), respectively. EQ-5D scale scores were 0.85±0.12 and 0.76±0.13 at baseline and 0.67±0.29 and 0.62±0.37 at 12 th month for the warfarin and AA groups, respectively; the decrease was significant in the warfarin group (p= 0.002) but not in the AA group (p= 0.249). The mortality rates of the patients in the warfarin, NOAC, and AA groups in one-year follow-up were 7.6%, 0.0%, and 10.3%, respectively. cOnclusiOns: Our study has demonstrated that a significant number of patients who should be on oral anticoagulants are still treated with AA and the negative effects of warfarin on QoL of NVAF patients as compared to AA. More data is needed with head-to-head comparison of warfarin and NOAC.

Turkish Nephrology Dialysis Transplantation, 2014

Journal of Cardiovascular Medicine, 2009

Both primary aortic tumors and aortic metastasis of primary cancers is extremely rare. In most ca... more Both primary aortic tumors and aortic metastasis of primary cancers is extremely rare. In most cases, diagnosis is established late in the course of the disease and management is challenging. We present a unique case of a 68-year-old woman with an unusual aortic localization of a metastasis of unknown origin.

Renal Failure, 2011

Temporary or permanent central venous catheter (CVC) insertion has been performed frequently for ... more Temporary or permanent central venous catheter (CVC) insertion has been performed frequently for hemodialysis treatment. One of the most important long-term complications of CVC is the central venous occlusion (CVO). Treatment of CVO consists of percutaneous angioplasty (PTA), PTA and stent implantation, or surgical procedure for resistant occlusions. Clinical outcome and long-term results of the revascularization procedures are well documented. However, there is no clear information about acute medical complications of the procedures. High-output heart failure (HOHF) is associated with several diseases including chronic anemia, psoriasis, systemic arteriovenous fistula, sepsis, hypercapnia, multiple myeloma, and hyperthyroidism. Herein, we report a case of chronic kidney disease with CVO that developed acute HOHF immediately after the revascularization procedure (PTA and stenting).

Medical Science Monitor, 2013

Departmental sources Background: There are many systemic complications of conventional selective ... more Departmental sources Background: There are many systemic complications of conventional selective renal arteriography (SRA), such as contrastmediated nephropathy. Contrast-enhanced magnetic resonance angiography (CE-MRA) and renal artery Doppler ultrasonography (DUSG) have been used increasingly for renal artery stenosis (RAS). The aim of this study was to evaluate the accuracy of CE-MRA and DUSG as used for diagnosis of RAS. Material/Methods: We divided 130 consecutive patients investigated for resistant hypertension into 2 groups based on age: group 1 was patients <60 years old and group 2 was patients >60 year. DUSG, CE-MRA, and SRA were performed in group 1 and group 2 patients. Results: Seventy-two patients (24 males [M], 48 females [F]) in group 1, and 58 patients (26 M, 32 F) in group 2 were included in the study. In the evaluation of clinically significant renal artery stenosis with DUSG, in group 1 the overall sensitivity was 83.33% and overall specificity was 81.82%, and in group 2 they were 69.23% and 0%, respectively, when compared with SRA. In the evaluation of clinically significant renal artery stenosis with CE-MRA, the overall sensitivity and specificity were 92.31% and 36.36%, respectively, in group 1 and 100.00% and 73.33%, respectively in group 2, when compared with SRA. Conclusions: CE-MRA is an accurate, non-invasive method for the diagnosis of RAS in patients above 60 years of age and DUSG may be the choice of diagnostic method for RAS in patients under 60 years of age.

Journal of Endocrinological Investigation, 2009

The aim of this study was to measure maximum P wave duration (Pmax) and P wave dispersion (PWD), ... more The aim of this study was to measure maximum P wave duration (Pmax) and P wave dispersion (PWD), which can be indicators for the risk of paroxysmal atrial fibrillation when increased, and to reveal their relationship with thyroid hormone levels in patients with endogenous and exogenous subclinical hyperthyroidism. Seventy-one patients with sublinical thyrotoxicosis (34 endogenous, 37 exogenous) and 69 healthy individuals were enrolled in the study. Pmax and minimum P wave duration (Pmin) on electrocardiogram recordings were measured and PWD was calculated as Pmax-Pmin. Pmax (p<0.001) and PWD (p<0.001) values were significantly higher in patients with endogenous subclinical hyperthyroidism compared with the control group. Pmax (p<0.001) and PWD (p<0.001) values were significantly higher in patients with exogenous subclinical thyrotoxicosis compared with the control group. Pmax (p=0.710) and PWD (p=0.127) were not significantly different in patients with endogenous subclinical hyperthyroidism compared with exogenous subclinical hyperthyroid patients. Pmax and PWD negatively associated with TSH in endogenous and exogenous subclinical hyperthyroidism. In the present study, we observed that Pmax and PWD were longer in patients with endogenous and exogenous subclinical hyperthyroidism. Lack of a difference in Pmax and PWD between patients with endogenous and exogenous subclinical hyperthyroidism seems to support the idea that hormone levels rather than the etiology of thyrotoxicosis affect the heart.

Clinical and Applied Thrombosis/Hemostasis, 2012

Introduction: Mean platelet volume (MPV) is an independent cardiovascular disease predictor, and ... more Introduction: Mean platelet volume (MPV) is an independent cardiovascular disease predictor, and characteristics of MPV in patients with diabetic nephropathy (DN) are not well known. Aim: To determine the MPV levels in patients at different stages of DN. Patients and Methods: The MPV levels were investigated in healthy participants (group 1, n = 157), patients with type 2 diabetes mellitus without complication (group 2, n = 160), diabetic patients with clinical proteinuria (group 3, n = 144), and in patients with chronic kidney disease due to DN (group 4, n = 160). Findings: The MPV level was higher in all diabetic patients than that in normal participants ( P < .05). The MPV values had a positive correlation with the serum creatinine and proteinuria, and a negative correlation with the glomerular filtration rate ([GFR] P < .001 for all, r values; .72, and .82, and −.92, respectively). Conclusion: The MPV values were higher in diabetic groups than that in normal participants. ...

The British Journal of Radiology, 2010

The aim of this prospective study was to evaluate the value of unenhanced (three-dimensional cons... more The aim of this prospective study was to evaluate the value of unenhanced (three-dimensional constructive interference in steady state (3D-CISS)) and contrastenhanced MR cisternography (CE-MRC) in detecting the localisation of cerebrospinal fluid (CSF) leak in patients with rhinorrhoea. 17 patients with active or suspected CSF rhinorrhoea were included in the study. 3D-CISS sequences in coronal and sagittal planes and fat-suppressed T 1-weighted spin-echo sequences in three planes before and after intrathecal contrast media adminstration were obtained. Images were obtained of the cribriform plate and sphenoid sinus. In addition, high-resolution CT (HRCT) was performed in order to evaluate the bony elements. The leak was present in 9/17 patients with 3D-CISS and 10/17 patients with CE-MRC. The leak from the cribriform plate to the nasal cavity in six patients and from the sphenoid sinus in four patients was nicely shown by CE-MRC. Eight of those patients were surgically treated, but spontaneous regression of the symptoms in two precluded any intervention. The leak localisations shown with CE-MRC were fully compatible with surgical results. The sensitivities of HRCT, 3D-CISS and CE-MRC for showing CSF leakage were 88%, 76% and 100%, respectively. In conclusion, 3D-CISS is a non-invasive and reliable technique, and should be the first-choice method to localise CSF leak. CE-MRC is helpful in conditions when there is no leak or in complicated cases with a positive b2-transferrin measurement.

Turkiye Klinikleri J Cardiovasc Sci, 2007