CACihan Altin

Cihan Altin

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Previous Organizations / Institutes

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Cihan Altin has a total of 189 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Incidence and Predictors of Clinical Outcomes in Real‐Life Patients With Atrial Fibrillation Treated With Oral Factor Xa Inhibitors: The Follow‐Up Results of the ANATOLIA‐AF Study

    by Umut Kocabaş, Isil Ergin, Sadi Can Sönmez, Veysel Yavuz, Selda Murat, Ibrahim Halil Özdemir, Ömer Genç, Haşim Tüner, Bengisu Keskin Meriç, Onur Aslan, et al.

    Objective: The main objective of this study is to determine the incidence and predictors of clinical outcomes in patients with AF treated with factor Xa inhibitors in a real‐world setting.Methods: The present study was a multicentre and observational study that included patients with AF who were treated with factor Xa inhibitors. The primary outcome was the composite of ischemic stroke, TIA, systemic embolism, major bleeding, and all‐cause mortality.Results: A total of 1162 patients from 26 cardiology centers were included in this study, with a median age of 72 years. During the median 12‐month follow‐up period, the primary outcome occurred in 195 patients (16.8%). Treatment with rivaroxaban compared with apixaban and edoxaban showed a lower rate of ischemic stroke, TIA, and/or systemic embolism (2.2% vs. 4.7% vs. 6.5%, respectively, p = 0.014). The major bleeding rate was similar between all three factor Xa inhibitors. The all‐cause mortality rate in the rivaroxaban group was lower compared with the apixaban and edoxaban groups (9.8% vs. 15.1% vs. 12.4%, respectively, p = 0.042). Overall, the frequency of primary outcome was 13.8%, 19.6%, and 20.6% for patients treated with rivaroxaban, apixaban, and edoxaban, respectively (p = 0.019). Older age, male sex, low body weight, high bleeding risk, heart failure, hypertension, liver failure, and treatment with apixaban 2.5 mg b.i.d. were independently associated with the development of primary outcome.Conclusion: The follow‐up data from the ANATOLIA‐AF study provides detailed data about the incidence and independent predictors of adverse clinical outcomes in patients with AF treated with factor Xa inhibitor treatment.


  • Open Access

    Diagnostic Potential of CTRP5 and Chemerin for Coronary Artery Disease: A Study by Coronary Computed Tomography Angiography

    by Taha Okan, Cihan Altın, Caner Topaloglu, Mehmet Doruk, Mehmet Birhan Yılmaz

    Background/Objectives: As an endocrine organ, adipose tissue produces adipokines that influence coronary artery disease (CAD). The objective of this study was to assess the potential value of CTRP5 and chemerin in differentiating coronary computed tomography angiography (CCTA)-confirmed coronary artery disease (CAD) versus non-CAD. Secondarily, within the CCTA-confirmed CAD group, the aim was to investigate the relationship between the severity and extent of CAD, as determined by coronary artery calcium score (CACS), and the levels of CTRP5 and chemerin. Methods: Consecutive individuals with chest pain underwent CCTA to evaluate coronary artery anatomy and were divided into two groups. The CCTA-confirmed CAD group included patients with any atherosclerotic plaque (soft, mixed, or calcified) regardless of calcification, while the non-CAD group consisted of individuals without plaques on CCTA, with zero CACS, and without ischemia on stress ECG. Secondarily, in the CCTA-confirmed CAD group, the severity and extent of CAD were evaluated using CACS. Blood samples were collected and stored at −80 °C for analysis of CTRP5 and chemerin levels via ELISA. Results: Serum CTRP5 and chemerin levels were significantly higher in the CAD group compared to the non-CAD group (221.83 ± 103.81 vs. 149.35 ± 50.99 ng/mL, p = 0.003 and 105.02 ± 35.62 vs. 86.07 ± 19.47 ng/mL, p = 0.005, respectively). Receiver operating characteristic (ROC) analysis showed that a CTRP5 cutoff of 172.30 ng/mL had 70% sensitivity and 73% specificity for identifying CAD, while a chemerin cutoff of 90.46 ng/mL had 61% sensitivity and 62% specificity. A strong positive correlation was observed between CTRP5 and chemerin, but neither adipokine showed a correlation with the Agatston score, a measure of CAD severity and extent, nor with coronary artery stenosis as determined by CCTA. Conclusions: CTRP5 and chemerin were significantly elevated in the CCTA-confirmed CAD group compared to the non-CAD group, with CTRP5 showing greater sensitivity and specificity. However, neither adipokine was linked to CAD severity and extent, differing from findings based on invasive coronary angiography (ICA). CTRP5 may serve as a promising “all-or-none biomarker” for CAD presence.


  • Open Access

    Correction to: Prevalence and Associated Factors of Inappropriate Dosing of Direct Oral Anticoagulants In Patients With Atrial Fibrillation: The ANATOLIA-AF Study

    by Umut Kocabaş, Isil Ergin, Veysel Yavuz, Selda Murat, Ibrahim Özdemir, Ömer Genç, Cihan Altın, Haşim Tüner, Bengisu Keskin Meriç, Ali Çoner, et al.


  • PrevAleNce and Associated factors of inappropriaTe dosing of direct Oral anticoaguLants In pAtients with Atrial Fibrillation: the ANATOLIA-AF Study

    by Umut Kocabaş, Isil Ergin, Veysel Yavuz, Selda Murat, Ibrahim Özdemir, Ömer Genç, Cihan Altın, Haşim Tüner, Bengisu Keskin Meriç, Ali Çoner, et al.

    Purpose Inappropriate dosing of direct oral anticoagulants is associated with an increased risk of stroke, systemic embolism, major bleeding, cardiovascular hospitalization, and death in patients with atrial fibrillation. The main goal of the study was to determine the prevalence and associated factors of inappropriate dosing of direct oral anticoagulants in real-life settings. Methods This study was a multicenter, cross-sectional, observational study that included 2004 patients with atrial fibrillation. The study population was recruited from 41 cardiology outpatient clinics between January and May 2021. The main criteria for inappropriate direct oral anticoagulant dosing were defined according to the recommendations of the European Heart Rhythm Association. Results The median age of the study population was 72 years and 58% were women. Nine-hundred and eighty-seven patients were prescribed rivaroxaban, 658 apixaban, 239 edoxaban, and 120 dabigatran. A total of 498 patients (24.9%) did not receive the appropriate dose of direct oral anticoagulants. In a logistic regression model, advanced age, presence of chronic kidney disease and permanent atrial fibrillation, prescription of reduced doses of direct oral anticoagulants or edoxaban treatment, concomitant use of amiodarone treatment, and non-use of statin treatment were significantly associated with potentially inappropriate dosing of direct oral anticoagulants. Conclusion The study demonstrated that the prevalence of inappropriate direct oral anticoagulant dosing according to the European Heart Rhythm Association recommendations was 24.9% in patients with atrial fibrillation. Several demographic and clinical factors were associated with the inappropriate prescription of direct oral anticoagulants.


  • Open Access

    Temel Tıp Eğitiminde Kardiyoloji

    by Cihan Altın (Ed), Ganbar Mammadov (Ed)

    Değerli meslektaşlarım, Kitabımız temel tıp eğitimi sırasında tıp fakültesi öğrencilerine anlatılması gereken konuları güncel bilgiler ve kılavuzlar eşliğinde özetlemeyi amaçlamaktadır. Temel tıp eğitiminin yanı sıra kardiyoloji asistanlık eğitimi ve hatta uzmanlığın ilk dönemlerinde bile yararlanılabilecek bir kitap hazırladığımızı düşünüyorum. Kardiyovasküler hastalıklar temel düzeyden başlayarak anlatılmış, güncel akademik bilgilerle desteklenmiştir. Güncel kılavuzlar eşliğinde yeni tanımlamalar, tanı, ayırıcı tanı ve tedavi seçenekleri anlatılmıştır. Uygun şekil ve tablolarla tıp öğrencileri ve asistanlar tarafından daha kolay anlaşılır düzeyde olması sağlanmaya çalışılmıştır.

  • Open Access

    Baseline characteristics of outpatients with heart failure according to phenotype: preliminary analysis from SMYRNA-HF registry

    by Bihter Şentürk, Ahmet Çeli̇k, Lütfü Bekar, Umut Uyan, Selcen Yakar Tülüce, Hakan Güneş, Murat Kerkütlüoğlu, Ali Çoner, Barış Kılıçaslan, Nurullah Çeti̇n, et al.

    Objectives: SMYRNA-HF study is a prospective multicenter registry study to determine the profiles of patients with heart failure (HF) in Turkey. This study aimed to present the baseline characteristics of preliminary cohort by comparing them according to different HF phenotypes. Methods: The first SMYRNA-HF cohort included outpatients with HF from 9 centers. Patients were classified into three HF phenotypes as HF with reduced ejection fraction (HFrEF), mildly reduced EF (HFmrEF), and preserved EF (HFpEF) as recommended by guidelines. Results: Overall, 298 patients were included in this preliminary analysis that 57% of the patients were classified as having HFrEF, 33.3% as having HFpEF, and 9.7% as having HFmrEF. Female gender was more common in HFpEF (p = 0.003). Age, frequency of diabetes mellitus, use of angiotensin-converting enzyme inhibitors/angiotensin receptor blocker, use of beta-blocker, use of daily loop diuretic, heart rate, blood urea nitrogen levels, lipid profiles, hemoglobin, white blood cell, platelet levels were similar among three HF phenotypes. Body mass index (BMI) (p < 0.001), frequency of hypertension (HT) (p < 0.001), and atrial fibrillation (AF) (p = 0.015) were higher in HFpEF. Ischemic etiology (p < 0.001) was less frequent in HFpEF. Use of mineralocorticoid receptor antagonist was higher in HFrEF (p < 0.001). Conclusions: Our study presented the baseline characteristics of outpatients with HF in Turkey. There were significant differences among HF phenotypes in terms of gender, BMI, frequency of HT, AF, and ischemic etiology. Treatment implementations seem to follow the guidelines. Although the rates are low, new treatment approaches recommended in the most recent guidelines seem to enter clinical practice.


  • Open Access

    Dabigatran for stroke prevention in real life in a sample of population from Turkey: D-SPIRIT registry

    by Cihan Altın, Caner Topaloğlu, Nurullah Çetin, Onur Dalgıç, Veysel Yavuz, Emin Alioğlu, Nazile Bilgin, Cenk Ekmekçi̇, Nihat Pekel, Mehmet Emre Özpelit, et al.

    Objective: The D-SPIRIT registry is designed to investigate the safety and effectiveness of dabigatran etexilate in patients with atrial fibrillation in routine clinical practice. Methods: D-SPIRIT is the first national, multicenter, prospective, observational, postmarketing registry that investigates the usage of dabigatran in real life. A total of 326 noveloral anticoagulant-eligible patients with atrial fibrillation who have been taking dabigatran etexilate therapy for stroke prevention at least 6 months from 9 different centers were enrolled into the registry. Patients were followed up for 2 years to evaluate the effectiveness and safety of the treatment. All adverse clinical events including bleeding, thromboembolic events, stroke, systemic embolism, transient ischemic attack, myocardial infarction, and all-cause death were recorded. Results: The mean age was 71.1 +/- 9.6 years, and 57.4% of the study participants were female. The mean CHA(2)DS(2)-VASc (congestive heart failure, hypertension, age >= 75 years, diabetes mellitus, stroke or transient ischemic attack [TIA], vascular disease, age 65-74 years, sex category) score was 3.4 +/- 1.6. The cumulative adverse clinical events rate was 6.30% per year. The rate for embolic events including TIA, ischemic stroke, and peripheral embolism was 1.26% per year. The rate for major bleeding was 2.20% per year, and the mortality rate was 0.94% per year. Conclusion: This registry obtained an important overview of the current safety and effectiveness of the dabigatran etexilate in Turkey. Our results indicate similar rates of thromboembolic and bleeding events with pivotal phase 3 trial and other real-life registries. However, rate of undertreatment usage of dabigatran etexilate in real life was found to be considerable.

  • Open Access

    Angiotensin receptor neprilysin inhibitor for patients with heart failure and reduced ejection fraction: Real-world experience from Turkey (ARNi-TR)

    by Berkay Ekici, Mehmet Yaman, Murathan Kucuk, Seckin Dereli, Mustafa Yenercag, Zerrin Yigit, Mehmet Memduh Bas, Yusuf Karavelioglu, Huseyin Altug Cakmak, Tarik Kivrak, et al.

    Heart failure (HF) is a growing public health problem with high morbidity and mortality. Recently, angiotensin receptor neprilysin inhibitor (ARNi) has emerged as a promising treatment for HF with reduced ejection fraction (HFrEF). Here, we shared our experience with the use of ARNi in HFrEF from multiple centers in Turkey. The ARNi-TR is a multicenter, noninterventional, retrospective, observational study. Overall, 779 patients with HF from 22 centers in Turkey who were prescribed sacubitril/valsartan were examined. Initial clinical status, biochemical and echocardiographic parameters, and New York Heart Association functional class (NYHA-FC) values were compared with follow-up values after 1 year of ARNi use. In addition, the effect of ARNi on number of annual hospitalizations was investigated, and the patients were divided into 2 groups, depending on whether ARNi was initiated at hospitalization or under outpatient clinic control. N-terminal pro-brain natriuretic peptide (NT-proBNP), left-ventricle ejection fraction (LV-EF), and NYHA-FC values improved significantly in both groups (all parameters, p<0.001) within 1-year follow-up. In both groups, a decrease in hemoglobin A1c (HbA1c) values was observed in ARNi use (p<0.001), and a decrease in daily diuretic doses and hospitalizations owing to HF were observed after ARNi use (all comparisons, p<0.001). Hypertension (16.9%) was the most common side effect in patients using ARN. The ARNi-TR study offers comprehensive real-life data for patients using ARNi in Turkey. The use of ARNi has shown significant improvements in FC, NT-proBNP, HbA1c levels, and LV-EF. Likewise, reductions in the number of annual hospitalizations and daily furosemide doses for HF were seen in this study.


  • Anaesthetic Management of a Patient with Brugada Syndrome in Total Knee Arthroplasty

    by Bahattin Tuncali, Gizem Kokten, Cihan Altin

    Anaesthesia,Brugada syndrome,ECG,knee arthroplasty


  • Open Access

    Blood pressure limits affecting carotid artery injury: a cross sectional study

    by Aylin Güneşli̇, Aynur Acibuca, Cihan Altin, Esin Gezmi̇ş, Mustafa Agah Teki̇nDal, Çiğdem Yalçin, Ozlem Alkan

    Objective: Although it is well known that high blood pressure causes undesirable effects on carotid arteries, it is not clear as to which threshold value this effect starts. The aim of this study is to evaluate and determine this threshold. Materials and Methods: This cross-sectional study included a total of 308 individuals in the following groups; Group 1: individuals with systolic blood pressure (SBP) 86.5 mmHg with 79.3% sensitivity and 71.6% specificity. Carotid elasticity was seen to be affected by SBP>137.5 mmHg with 80.4% sensitivity and 73.1% specificity, and DBP>88.5 mmHg with 79.1% sensitivity and 73.8% specificity. Conclusion: Carotid distensibility and elasticity decreases with increasing blood pressure. In individuals with high-normal blood pressure, carotid damage may begin after a certain blood pressure value.