Publications by authors named "Akbulut Muge"

Cardiomyopathy, which is shortly defined as a disease of the myocardium, has a broad definition that includes many different diagnoses. Recent advances in cardiac imaging techniques, including basic and advanced echocardiography, computed tomography, nuclear medicine, and cardiac magnetic resonance, allow for a more accurate evaluation of volumes and thickness of cardiac chambers, systolic and diastolic function of the ventricules, and tissue structure. Multimodality imaging often provides the first clinical suspicion for specific etiologies, especially when the medical and family history is unclear, by identification of red flags of underlying systemic diseases.

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Background: The left atrial appendage (LAA) is the primary site of embolism in individuals with atrial fibrillation (AF). We aimed to evaluate the morphological features of the LAA orifice in patients with sinus rhythm, paroxysmal AF, and persistent AF using three-dimensional (3D) transesophageal echocardiography (TOE). We also intended to identify morphometric parameters of the LAA orifice that may be potentially associated with an increased risk of ischemic stroke.

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Objective: A significant number of individuals with mild mitral stenosis (MS) experience exertional symptoms that are disproportionate to the hemodynamic severity of their condition. This study aims to determine whether exercise-induced left atrial (LA) dysfunction occurs in these patients and whether it is related to the development of symptoms.

Methods: In this observational study, we recruited 46 patients with mild MS.

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Introduction: Malnutrition is common among heart failure (HF) patients. The prognostic nutritional index (PNI) and controlling nutritional status (CONUT) are widely used for evaluation of nutritional status in HF patients. Right ventricular dysfunction, functional tricuspid regurgitation, and elevated right atrial pressure might exacerbate malnutrition by promoting bowel congestion and malabsorption in HF patients.

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Background: COVID-19 is a multi-systemic infectious disease. Nearly 20%-30% of hospitalized patients have evidence of acute myocardial involvement, portending a poorer prognosis. However, information about the long-term effects of the disease on cardiac functions is sparse.

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Purpose: Cardiac resynchronization therapy (CRT) positively affects the improvement of functional mitral regurgitation (MR) in patients with heart failure with reduced ejection fraction (HFrEF). However, geometric changes in the mitral valve apparatus, subvalvular structures and their contribution to improving mitral regurgitation after CRT have not been clearly defined. Our study aimed to evaluate the geometric parameters of mitral valve apparatus measured with three-dimensional (3D) transesophageal echocardiography (TEE) before CRT implantation and to determine the parameters predicting the improvement of MR after CRT.

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Hemodialysis (HD) decreases preload and its acute effect on the diastolic function is still controversial even with the introduction of new non-volume-dependent tissue Doppler echocardiographic indices. This study is designed to evaluate these acute changes following HD sessions. We enrolled 39 patients receiving standard thrice weekly HD for more than 6 months and performed two dimensional speckle tracking echocardiography (2DSTE) and tissue Doppler studies with a standard cardiac ultrasound device shortly before and after HD.

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Pacemakers are lifesaving devices that are being implanted with various indications, such as sinus node disease, atrioventricular block, and cardiac resynchronization therapy. Impedance measurement is one of the integral tests by which electrical resistance in pacing lead is tested. In this paper, we report an interesting observation of sudden impedance rise after ventricular tachycardia ablation with transmural lesions, which subsequently normalized without any need for intervention.

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Cardiovascular diseases (CVD) and cancer are still the leading causes of death. There are many common etiologic factors, especially smoking and obesity. Therefore, it is not uncommon for CVD and cancer to coexist.

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Background: Elective percutaneous coronary intervention (ePCI) may cause minor elevation of cardiac enzymes, so-called minor myocardial injury (MMI) which can be due to different pathophysiological mechanism (e.g. distal embolisation, side branch occlusion, increased platelet activation triggered by the intracoronary metallic stents).

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Background: Nondipping blood pressure pattern carry a high risk of cardiovascular and cerebrovascular complications due to a higher cumulative pressure overload. We aimed to define the role of strain analysis for detecting subclinical left ventricular systolic dysfunction in recently diagnosed nondipper and dipper hypertensive patients with normal left ventricular systolic function.

Methods: Study population consisted of two groups of patients, Group 1: 45 dipper patients and Group 2: 43 nondipper patients.

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