Cardiology and Cardiovascular Medicine, General Medicine
45
Scopus Publications
Scopus Publications
Evolving Role of Coronary Collaterals in STEMI Outcomes: A Comparative Analysis of Pandemic and Post-Pandemic Phases Ozgur Ulas Ozcan, Muhammed Bora Demircelik, Aykun Hakgor, Atakan Dursun, Arzu Yazar, Aysel Akhundova, Beytullah Cakal, Oguz Karaca, Bilal Boztosun Angiology, 2026 Acute ST-elevation myocardial infarction (STEMI) is a critical condition where coronary collaterals can mitigate myocardial damage. The Coronavirus Disease 2019 (COVID-19) pandemic introduced unique challenges in STEMI management, potentially affecting outcomes. This study evaluates the efficacy of coronary collaterals during the pandemic compared to the post-pandemic period. A review of 1465 STEMI patients treated at a high-volume tertiary care center from April 2020 to December 2022 was conducted. Collaterals were assessed using the Rentrop classification. In-hospital mortality and 1-year major adverse cardiac events (MACE) were analyzed based on collateral status and timeframes. During the pandemic, there was a higher incidence of robust collaterals (28.2% vs 23.2%, P = .04), but they were less protective, with similar in-hospital mortality (14.4% vs 8.1%, P = .07) and 1-year MACE rates (21.9% vs 30.4%, P = .09) across groups. Post-pandemic, robust collaterals showed significant protective effects with reduced in-hospital mortality (3.6% vs 7.4%, P = .04) and 1-year MACE rates (17.1% vs 24.9%, P = .03). These findings highlight a dynamic role of collaterals in STEMI management, with the pandemic impairing their functionality. This underscores the need for adaptive STEMI care strategies, especially during global health crises.
Early Atherosclerosis and Conduction Defect in a Rare Case of Dunnigan Type Familial Partial Lipodystrophy Fatih Erkam Olgun Turk Kardiyoloji Dernegi Arsivi, 2024 A 45-year-old female patient was admitted to the emergency department with syncope. Her medical history revealed a diagnosis of Familial Partial Lipodystrophy 2 (FPLD2). The patient's electrocardiogram showed a complete atrioventricular (A-V) block, and she had a history of insulin-dependent diabetes mellitus and coronary artery bypass surgery. A severe stenosis was observed in the aortic right coronary artery saphenous vein graft during coronary angiography, which was successfully revascularized. Subsequently, due to persistant syncope attacks, a permanent pacemaker was implanted after an electrophysiological study. This case highlights that serious cardiac conduction defects in patients with FPLD2 may not only be related to coronary artery disease but can also present as direct conduction defects.
Demographics of patients with heart failure who were over 80 years old and were admitted to the cardiology clinics in Turkey Gülay Gök Anatolian Journal of Cardiology, 2019 Objective: Heart failure (HF) has a high prevalence and mortality rate in elderly patients; however, there are few studies that have focused on patients older than 80 years. The aim of this study is to describe and compare the age-specific demographics and clinical features of Turkish elderly patients with HF who were admitted to cardiology clinics. Methods: The Epidemiology of Cardiovascular Disease in Elderly Turkish population (ELDER-TURK) study was conducted in 73 centers in Turkey, and it recruited a total of 5694 patients aged 65 years or older. In this study, the clinical profile of the patients who were aged 80 years or older and those between 65 and 79 years with HF were described and compared based on the ejection fraction (EF)-related classification: HFrEF and HFpEF (is considered as EF: ≥50%). Results: A total of 1098 patients (male, 47.5%; mean age, 83.5±3.1 years) aged ≥80 years and 4596 patients (male, 50.2 %; mean age, 71.1±4.31 years) aged 65-79 years were enrolled in this study. The prevalence of HF was 39.8% for patients who were ≥80 years and 27.1% for patients 65–79 years old. For patients aged ≥80 years with HF, the prevalence rate was 67% for hypertension (HT), 25.6% for diabetes mellitus (DM), 54.3% for coronary artery disease (CAD), and 42.3% for atrial fibrilation. Female proportion was lower in the HFrEF group (p=0.019). The prevalence of HT and DM was higher in the HFpEF group (p<0.01), whereas CAD had a higher prevalence in the HFrEF group (p=0.02). Among patients aged 65–79 years, 43.9% (548) had HFpEF, and 56.1% (700) had HFrEF. In this group of patients aged 65-79 years with HFrEF, the prevalence of DM was significantly higher than in patients aged ≥80 years with HFrEF (p<0.01). Conclusion: HF is common in elderly Turkish population, and its frequency increases significantly with age. Females, diabetics, and hypertensives are more likely to have HFpEF, whereas CAD patients are more likely to have HFrEF.
A coronary proatherosclerotic marker: Pregnancy-associated plasma protein A and its association with coronary calcium score and carotid intima-media thickness Abdullah Guven, Bora Demircelik, Yusuf Selcoki, Ozgul Gurel, Okan Er, Halil Aydin, Alper Bozkurt, Beyhan Eryonucu Advances in Clinical and Experimental Medicine, 2017 BACKGROUND Atherosclerosis, a chronic inflammatory disorder of the arteries, is responsible for the greatest number of deaths in westernized societies, with numbers increasing at a marked rate in developing countries. Coronary calcium score (CCS), carotid intima-media thickness (CIMT) and pregnancy-associated plasma protein A (PAPP-A) are predictors for the development of atherosclerosis. OBJECTIVES This study was aimed to investigate the relationship between CCS, CIMT and PAPP-A for earlier diagnosis of atherosclerosis. MATERIAL AND METHODS A total of 99 patients were included in the study. Coronary computerized tomography (CT) angiography was performed on all patients. The calcium scoring technique was performed using a sequential scanning mode. CIMT measurement was done through the area 1 cm distal of the bulbus arteriosus with carotid Doppler ultrasound. PAPP-A values were analyzed by double immunoenzymatic technique. RESULTS Out of 99 patients, 63 were found with coronary atherosclerosis using multislice computed tomography (MSCT) coronary angiography. When the cut-off point for CCS was taken to be 0.40, the sensitivity of this parameter was 97% and its specificity was 68.3%. When the cut-off point for CIMT was taken to be 0.60, the sensitivity and the specificity of these parameters were 75.0% and 87.3%, respectively, for the right measurements and 75.0% and 79.4%, respectively, for the left measurements. CONCLUSIONS This data support the conclusion that PAPP-A, like CCS and CIMT, is a parameter that can be used to detect subclinical atherosclerosis.
Galectin-3: A biochemical marker to detect paroxysmal atrial fibrillation? Yusuf Selcoki, H İbrahim Aydin, Tugrul H Celik, Ahmet Isleyen, Ali Erayman, M Bora Demircelik, Hilmi Demirin, Aydin Kosus, Beyhan Eryonucu Clinical and Investigative Medicine, 2016 Purpose: Atrial fibrillation (AF) is the most common form of arrhythmia. AF leads to electrical remodelling and fibrosis of the atria; however, the mechanism(s) remain poorly understood. Galectin-3 is a potential mediator of cardiac fibrosis. The present study aimed to examine the relationship between serum galectin-3 levels and paroxysmal AF. Methods: Forty-six patients with paroxysmal AF and preserved left ventricular systolic function, and 38 age- and gender-matched control subjects, were involved in the study. Serum galectin-3 levels were analyzed with an enzyme-linked immunosorbent assay (ELISA). Results: Serum galectin-3 levels (median 1.38 ng/mL; 1.21 ng/mL-1.87 ng/mL; p< 0.001) were significantly elevated in patients with paroxysmal AF compared with the control. Left atrial diameter was significantly higher in patients with paroxysmal AF (41.2±3.0 mm vs. 39.6±3.3 mm). Left atrial diameter was found to be significantly correlated with serum galectin-3 levels in patients with paroxysmal AF (r= 0.378, p= 0.001). Conclusion: Serum galectin-3 levels are significantly elevated and significantly correlated with left atrial diameter in patients with paroxysmal AF.
Antiplatelet effect of sequential administration of cilostazol in patients with acetylsalycilic acid resistance M. Çakmak, B. Demirçelik, M. Çetin, Z. Çetin, S. Işık, H. Çiçekçioğlu, F. V. Ulusoy, B. Eryonucu Acta Cardiologica Sinica, 2016 BACKGROUND Acetylsalicylic acid (ASA) resistance in patients with coronary artery disease is an important medical problem that can affect treatment decision-making and outcomes. Cilostazol has been investigated to determine its effectiveness in patients with acetylsalicylic acid resistance. The aim of this study was to evaluate the antiplatelet efficacy of sequential administration of CLZ in patients with ASA resistance. METHODS A total of 180 patients were enrolled in our study. Patients with stable coronary artery disease were first given orally ASA 100 for 10 days, followed by collagen/epinephrine induced closure time (CTCEPI) measurements. Those who were found to be resistant to orally 100 mg of ASA were given orally 300 mg of ASA for an additional 10 days after which we repeated CTCEPI measurements. Those patients with resistance to orally 300 mg ASA were then given CLZ at a daily dose of orally 200 mg for 10 days followed by a final CTCEPI measurement. RESULTS The rate of resistance to 100 mg ASA was 81/180 (45%) compared to a rate of 35/81 (43.2%) with 300 mg ASA. Of the 35 patients found to be resistant to 300 mg ASA, 22 (62.9%) also failed to respond to CLZ treatment. Overall, sequential administration of 300 mg ASA and 200 mg CLZ resulted in a reduction in the number of non-responders from 45% to 12.2%. CONCLUSIONS Initiation of CLZ could be of benefit in some patients with ASA-resistance for whom an effective anti-aggregant effect is of clinical importance.
Predictive value of neutrophil lymphocyte ratio and platelet lymphocyte ratio in patients with coronary slow flow M. Çetin, E. Kızıltunç, Ö. U. Elalmış, Z. Çetin, M. B. Demirçelik, H. Çiçekçioğlu, A. Kurtul, Selçuk Özkan, C. Avan, E. Örnek, F. V. Ulusoy Acta Cardiologica Sinica, 2016 BACKGROUND Increased microvascular resistance due to chronic inflammation is assumed to be one of the mechanisms associated with coronary slow flow (CSF). Previous studies have shown that the platelet-to-lymphocyte ratio (PLR) and the neutrophil-lymphocyte ratio (NLR) are markers of inflammation for various diseases. In this study we aimed to evaluate the relationship between CSF and PLR-NLR. METHODS Seventy-eight patients with CSF and 50 patients with normal coronary flow were enrolled into this study. The study subjects underwent medical examination and testing, after which their platelet-to-lymphocyte ratios and NLR values were calculated. An independent observer measured the coronary flow rate by Thrombolysis in Myocardial Infarction Frame Count (TFC) method. The platelet-to-lymphocyte ratio and NLR values were compared between the groups and correlation analysis was performed to explore the relationship between mean TFC with PLR and NLR. RESULTS Platelet-to-lymphocyte ratio and NLR values were significantly higher in patients with CSF (p < 0.001). There was a positive significant correlation between TFC with NLR and PLR (Spearman's Rho: 0.59, p < 0.001 and Spearman's Rho: 0.30, p = 0.001, respectively). Multivariate logistic regression analysis revealed that NLR is the one independent predictor for CSF. CONCLUSIONS This study demonstrated an association between CSF and PLR-NLR. Although the exact mechanism could not be explained, our findings support the possible role of inflammation in CSF physiopathology.
Pericardicentesis and Contemporary practice Murat Turfan, S. Namık Murat, Ahmet Akyel, Mustafa Duran, Ender Örnek, M. Bora Demirçelik European Journal of General Medicine, 2013
The relationship between lipoprotein(a) and coronary artery disease, as well as its variable nature following myocardial infarction Clinical and Investigative Medicine, 2011
The influence of left ventricular diameter on left atrial appendage size and thrombus formation in patients with dilated cardiomyopathy Turk Kardiyoloji Dernegi Arsivi, 2011
