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Dive into the research topics where Mehmet Erdogan is active.

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Featured researches published by Mehmet Erdogan.


Eurointervention | 2014

First experience with the jailed pressure wire technique in the provisional side branch stenting of coronary bifurcation lesions.

Mehmet Bilge; Sina Ali; Recai Alemdar; Ayse Saatci Yasar; Mehmet Erdogan

AIMS The provisional strategy (PS) is an accepted modality of treatment in coronary bifurcation interventions, though, after main vessel (MV) stenting, the assessment of the side branch (SB) becomes more difficult. In bifurcation interventions, the major advantage of fractional flow reserve (FFR) is the avoidance of the need for SB intervention. However, SB access with a pressure wire after MV stenting may be difficult, sometimes impossible. The objective of this paper was to evaluate the feasibility and safety of physiologic assessment of SB lesions using FFR with the jailed pressure wire (JPW) in patients undergoing the PS. Although the JPW technique is theoretically possible in the PS, there is no information available on the use of this technique. METHODS AND RESULTS We retrospectively evaluated 11 patients who were treated with the JPW technique at a single centre. Procedures were successfully accomplished in all cases without complications, such as damage of the pressure sensor, failure to measure FFR value, removing the polymer coating, and entrapment or fracture of the JPW. CONCLUSIONS In conclusion, our limited experience suggests that the JPW technique in the PS may be a safe and technically feasible approach. This technical report details the JPW technique in patients undergoing the PS.


Echocardiography-a Journal of Cardiovascular Ultrasound and Allied Techniques | 2017

An unusual presentation of papillary fibroelastoma originating from right ventricular outflow tract

Mehmet Erdogan; Murat Can Güney; Hüseyin Ayhan; Hacı Ahmet Kasapkara; Emrah Uguz; Tahir Durmaz; Telat Keleş; Engin Bozkurt

Papillary fibroelastomas (PFEs) are primary cardiac tumors with a benign and avascular nature. Majority of the PFEs are originated from the valvular endocardium, while the most common site is aortic valve. In this case, we present a patient with multiple PFEs originating from the right ventricular outflow tract who was admitted to our clinic with exertional dyspnea. As far as we know, this is the first case of this unusual presentation of multiple PFEs and also had a history of breast cancer and permanent pacemaker reported in the literature.


Journal of Psychopharmacology | 2018

Electrocardiographic alterations in patients consuming synthetic cannabinoids

Hayriye Mihrimah Ozturk; Mehmet Erdogan; Yakup Alsancak; Mikail Yarlioglues; Mustafa Duran; M Hamid Boztas; Sani Namik Murat; Selcuk Ozturk

Introduction: The aim of this study was to investigate the electrocardiographic parameters in patients consuming synthetic cannabinoids. Methods: Thirty-five patients who were consuming synthetic cannabinoids were enrolled to the study, prospectively. The control group included 35 healthy age and sex-matched volunteers. The standard 12-lead surface electrocardiograms of the study population were recorded. P maximum (Pmax), P minimum (Pmin), P wave dispersion, interatrial duration, P wave area in D2 derivation, abnormal P terminal force in V1 derivation, heart rate, QT interval, corrected QT, QT dispersion, PR interval duration and macrovolt T-wave alternans were evaluated by two experienced cardiologists. The intra-observer and inter-observer variations for all measurements were non-significant. Results: Pmax and Pmin duration was not different between the groups (p=0.96, p=0.15, respectively). However, P wave dispersion was higher in the patient group compared to control group (34±9.4, 29.5±6.6, p=0.02, respectively). QT interval was significantly higher in the patient group than the control group (380.3±25, 365.6±22.8, p=0.01, respectively). Besides, corrected QT was higher in the patient group compared to control group (415±36.8, 392±15.5, p=0.001, respectively). QT dispersion was also higher in the patient group than the control group (39.8±10.0, 29.2±5.4, p<0.001, respectively). Conclusion: Altered electrocardiography parameters linked with atrial and ventricular arrhythmia development may be observed in patients consuming synthetic cannabinoids. These patients should be evaluated regularly for cardiovascular disease and arrhythmia development. The electrocardiogram, which is a cheap and easy test to apply, can be used to determine the pro-arrythmic risk in patients consuming synthetic cannabinoids.


Revista Portuguesa De Pneumologia | 2017

Multiple fistulae of all three coronary arteries draining into the pulmonary artery and concomitant coronary anomaly

Mehmet Burak Özen; Tahir Durmaz; Hüseyin Ayhan; Mehmet Erdogan

Coronary to pulmonary fistula is an uncommon cardiac anomaly seen in 0.05-0.25% of patients undergoing diagnostic coronary angiography. Coronary artery fistulae are usually asymptomatic but larger and multiple fistulae can lead to ischemia, congestive heart failure, myocardial infarction and pulmonary hypertension. Although usually congenital, they may be acquired. They most frequently arise from the right coronary artery system (55%), less often from the left coronary artery system (35%), and rarely from both coronary arteries (5%). The most common locations into which they drain are, in decreasing order, the right ventricle, right atrium, pulmonary artery, coronary sinus, left atrium, left ventricle, and superior vena cava. Although most fistulae are single, multiple fistulae have been reported. The most common type of coronary artery fistula in one study was to the pulmonary artery, but multiple fistulae of all three coronary arteries to the pulmonary artery and concomitant anomalous


Revista Portuguesa De Pneumologia | 2016

Epicardial fat tissue thickness is increased in patients with lichen planus and is linked to inflammation and dyslipidemia.

Ahmet Göktuğ Ertem; Mehmet Erdogan; Cemal Koseoglu; Gulsen Akoglu; Elcin Ozdemir; Gamze Koseoglu; Serkan Sivri; Telat Keleş; Tahir Durmaz; Akın Aktaş; Engin Bozkurt

BACKGROUND AND OBJECTIVES Lichen planus (LP) is a mucocutaneous inflammatory disease. Inflammation plays a major role in the progression of atherosclerosis. Epicardial fat tissue (EFT) has been shown to produce and secrete various proatherogenic and proinflammatory hormones and cytokines. The aim of this study was to assess EFT in patients with lichen planus. METHODS Fifty-four patients with LP and 50 controls were enrolled in the study. LP was diagnosed according to the World Health Organization criteria. EFT was measured on the free wall of the right ventricle in parasternal long-axis view, as previously described and validated. RESULTS There were positive correlations between EFT thickness and platelet/lymphocyte ratio, neutrophil/lymphocyte ratio, duration of LP, and high-sensitivity C-reactive protein (hsCRP) (p<0.001, p<0.001, p=0.002 and p<0.001, respectively). In multivariate analysis, after adjustments for relevant confounders, LDL cholesterol, hsCRP, platelet/lymphocyte ratio and duration of LP were independent predictors of EFT thickness in patients with LP (β=0.231, p=0.014; β=0.205, p=0.037; β=0.361, p=0.001 and β=0.133, p=0.047, respectively). CONCLUSION EFT is increased in patients with LP compared to control subjects. Duration of LP is correlated with EFT, and duration of LP is also an independent predictor of increased EFT, which is a predictor of subclinical atherosclerosis.


Medical Principles and Practice | 2016

Aortic Elastic Properties and Myocardial Performance Index Are Impaired in Patients with Lichen Planus

Cemal Koseoglu; Mehmet Erdogan; Ahmet Göktuğ Ertem; G. Koseoglu; Gulsen Akoglu; Akın Aktaş; Elcin Ozdemir; O. Kurmus; Tahir Durmaz; Telat Keleş; Engin Bozkurt

Objectives: The aim of this study was to investigate the elastic properties of the aorta and the myocardial performance index of the left ventricle (LV) in patients with lichen planus (LP). Subjects and Methods: A total of 54 patients with LP and 50 controls were enrolled in the study. The 2 groups were well-matched regarding age, gender, body mass index, any smoking history, diabetes mellitus and systolic and diastolic blood pressure (SBP and DBP). The echocardiographic examination was performed on the study subjects and the controls. Aortic elasticity parameters and the myocardial performance index of the LV were calculated. The Student t test, the χ2 test and multiple linear regression were used for the statistical analysis. Results: Aortic strain (AS, 4.77 ± 1.81 vs. 8.95 ± 2.22; p < 0.001) and aortic distensibility (AD, 0.25 ± 0.009 vs. 0.42 ± 0.120; p < 0.001) were significantly lower, and aortic stiffness index β (ASIβ, 3.65 ± 1.03 vs. 2.70 ± 0.91; p < 0.001) was significantly higher in the LP group than in the controls. The myocardial performance index (Tei index) was significantly higher in the LP group than in the control group (p = 0.001). The duration of the LP was negatively correlated with AS (r = -0.364, p < 0.001) and AD (r = -0.279, p = 0.006), and positively correlated with the Tei index (r = 0.324, p = 0.001) and ASIβ (r = 0.364, p < 0.001). After adjustment for relevant confounders (age, male gender, smoking, SBP, DBP, diabetes mellitus and low- and high-density lipoprotein cholesterol), LP and its duration were still associated with AS, AD and ASIβ. Conclusion: In this study, AS and AD were lower and ASIβ and myocardial performance index higher in LP patients than in controls.


Kardiologia Polska | 2015

Extensive pericardial fat tissue mimicking paracardiac mass

Ahmet Göktuğ Ertem; Mehmet Erdogan; Cemal Koseoglu; Tahir Durmaz; Engin Bozkurt

Epicardial adipose tissue has been recognised as a risk factor for the occurence of cardiovascular disease. A 69-year-old woman was admitted to the outpatient cardiology clinic with dyspnoea. Before cardiological evaluation, she had been evaluated by the chest department for the same condition. During their evaluation, computed tomography revealed cardiomegaly and a hypodense area surrounding the heart (adipose tissue?) (Fig. 1A). She had a history of hypertension. On physical examination, there were no audible murmurs, rales or rhonci, and her blood pressure was 120/80 mm Hg. Laboratory test results were all within normal limits (LDL cholesterol: 125 mg/dL, creatinine: 0.85 mg/dL, and haemoglobin: 13.2 g/dL). Echocardiography showed left ventricular ejection fraction of 65%, diastolic dysfunction (E/A < 1, e’: 5.07 cm/s, E/e’: 15.4, mitral propagation velocity: 52 ms), and echogenic area in the neighbourhood of all heart chambers (lipoma or liposarcoma or epicardial fat tissue) (Fig. 1B). For further evalution, cardiac magnetic resonance imaging (CMRI) was performed. This revealed the apperance of fatty tissue that surrounds the heart (widest thickness 9.6 mm) and localised pericardial thickness upon the lateral wall of left ventricle (thickness: 5.8 cm) (Fig. 1C). Contrast CMRI did not show any contrast enhancement, and thus liposarcoma was excluded (Fig. 1D).


Journal of the American College of Cardiology | 2013

Safety of Transesophageal Echocardiography-Guided Atrial Septostomy: Outcomes of the Largest series of TEE-guided Atrial Septostomy in Turkey

Mehmet Bilge; Bilge Karaduman Duran; Recai Alemdar; Ayse Saatci Yasar; Sina Ali; Ozgur Kirbas; Cemal Koseoglu; Mehmet Erdogan; Özge Kurmuş; Turgay Aslan; Mustafa Duran; Serkan Sivri; Filiz Özçelik

PP-375 Atrial septostomy (AS) is a complex technique used during interventions such as; mitral balloon valvotomy, electrophysiological procedures, left atrial appendage closure and MitraClip. Cardiac perforation occurs in 1-5% of cases even in experienced hands. In daily practice, although AS is


Journal of the American College of Cardiology | 2013

Carotid Artery Back Pressure and Cerebral Intolerance During the Occlusion in Carotid Stenting with the Mo.Ma Proximal Embolic Protection Device

Mehmet Bilge; Recai Alemdar; Sina Ali; Ayse Saatci Yasar; Ozgur Kirbas; Ahmet Akdi; Özge Kurmuş; Turgay Aslan; Cemal Koseoglu; Bilge Karaduman Duran; Mehmet Erdogan; Serkan Sivri; Halan Süygün

OP-173 The Mo.Ma proximal embolic protection system provide neuroprotection during all phases of the carotid artery stenting (CAS) procedure. However, cerebral intolerance is not an infrequent occurrence with this approach. In most of the cases, intolerance is a benign phenomenon which resolves


Anatolian Journal of Cardiology | 2015

P-wave dispersion and left ventricular diastolic dysfunction in hypertension.

Ahmet Göktuğ Ertem; Mehmet Erdogan; Telat Keleş; Tahir Durmaz; Engin Bozkurt

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Mehmet Bilge

Yıldırım Beyazıt University

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Serkan Sivri

Yıldırım Beyazıt University

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Tahir Durmaz

Yıldırım Beyazıt University

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Hüseyin Ayhan

Yıldırım Beyazıt University

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Telat Keleş

Yıldırım Beyazıt University

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Akın Aktaş

Yıldırım Beyazıt University

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