Publications by authors named "Bekeredjian R"

Article Synopsis
  • Coronary functional disorders (CFD) significantly contribute to angina in patients with non-obstructed coronary arteries (ANOCA), with different endotypes identified, such as microvascular spasm and coronary microvascular dysfunction (CMD).
  • A study involving 89 ANOCA patients using comprehensive coronary functional testing (CFT) found that 91% had at least one disorder, with microvascular spasm being the most common (61%).
  • The results highlighted that isolated CMD is rare and emphasized the necessity of spasm testing for diagnosing and characterizing CFD in ANOCA patients.
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Article Synopsis
  • * The research involved 372 patients with angina but non-obstructive coronary arteries, comparing results from those who received RASP vs. those who did not during ACh provocation testing.
  • * Findings indicated that RASP did not significantly change the frequency or type of coronary vasomotor responses when tested with ACh, meaning it can be safely used in patients undergoing spasm testing.
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Background: Approximately 5-15% of patients with acute coronary syndrome have myocardial infarction with unobstructed coronary arteries (MINOCA). Guidelines recommend invasive assessments to identify underlying causes for MINOCA such as coronary artery spasm (CAS), spontaneous coronary dissection, or microvascular disease as well as non-invasive assessments in search of myocarditis, takotsubo syndrome, or cardiomyopathies.

Case Summary: A 54-year-old male patient presented with ST-segment elevation myocardial infarction (STEMI).

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We present a case of a man in his 40s with pulmonary-renal syndrome due to myeloperoxidase-positive antineutrophil cytoplasmic antibodies-associated vasculitis and concurrent cold agglutinin disease, a combination that has not yet been described in the literature. The fulminant course of the disease, including the need for kidney replacement therapy and mechanical ventilation posed a significant treatment challenge due to haemolytic complications.

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Myocardial ischemia is a complex condition which may result from epicardial and/or microvascular causes involving functional and structural mechanisms. These mechanisms may overlap in a given patient illustrating the difficulties for appropriate management. Assessment of myocardial ischemia can be performed using noninvasive and invasive tools.

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Patients with angina and unobstructed coronary arteries (ANOCA) are frequently encountered in clinical practice. These cases represent a diagnostic and therapeutic challenge and are often characterized by a long patient journey until a diagnosis of coronary vasomotor disorders is established. Moreover, the unsatisfactory management of such patients leads to insecurity, ongoing symptoms, and psychological sequelae such as anxiety or depression.

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Background: With increasing numbers of patients and novel drugs for distinct causes of systolic and diastolic heart failure, automated assessment of cardiac function is important. We aimed to provide a non-invasive method to predict diagnosis of patients undergoing cardiac MRI (cMRI) and to obtain left ventricular end-diastolic pressure (LVEDP).

Methods: For this modelling study, patients who had undergone cardiac catheterisation at University Hospital Heidelberg (Heidelberg, Germany) between July 15, 2004 and March 16, 2023, were identified, as were individual left ventricular pressure measurements.

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Background: Severe tricuspid regurgitation (TR) is known to be associated with poor quality of life and increased risk of death when left untreated.

Objectives: We sought to report the 1-year clinical outcomes of subjects treated by tricuspid transcatheter edge-to-edge repair (TEER) with the TriClip system (Abbott Cardiovascular) in a contemporary real-world setting.

Methods: The bRIGHT (An Observational Real-World Study Evaluating Severe Tricuspid Regurgitation Patients Treated With the Abbott TriClip Device) postapproval study is a prospective, single-arm, open-label, multicenter postmarket registry conducted at 26 sites in Europe, with central event adjudication and echocardiographic core-laboratory assessment.

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Article Synopsis
  • The study investigates the genetic factors contributing to coronary artery spasm (CAS) in European patients with angina and unobstructed coronary arteries, particularly focusing on variants from 208 cardiovascular-related genes.
  • Although no findings met the genome-wide significance threshold, suggestive genetic associations were found for focal and diffuse epicardial CAS, particularly relating to genes CDH13 and HDAC9, EDN1 respectively.
  • The research suggests that EDN1 may be a potential genetic risk factor for diffuse epicardial CAS, with elevated plasma endothelin-1 levels identified as a possible cardiac marker.
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Background: Electrocardiograms (ECGs) recorded with wearable devices and additional smartphone apps play an increasing role in cardiology.

Case Summaries: We present two cases in which it was possible to record an ECG during cardiac-related symptoms using the patients' smartphones. Previous standard resting and 24-hour ECGs had revealed no pathologies.

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Background: Cannulation strategy in acute type A dissection (ATAD) varies widely without known gold standards. This study compared ATAD outcomes of axillary vs femoral artery cannulation in a large cohort from the International Registry of Acute Aortic Dissection (IRAD).

Methods: The study retrospectively reviewed 2145 patients from the IRAD Interventional Cohort (1996-2021) who underwent ATAD repair with axillary or femoral cannulation (axillary group: n = 1106 [52%]; femoral group: n = 1039 [48%]).

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Background: In patients not suitable for transfemoral transcatheter aortic valve implantation (TAVI), several access strategies can be chosen.

Aim: To evaluate the use and patient outcomes of transaxillary (TAx), transapical (TA), and transaortic (TAo) as alternative access for TAVI in Germany; to further evaluate surgical cutdown vs. percutaneous TAx access.

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Background: Transcatheter edge-to-edge repair (TEER) for the treatment of tricuspid regurgitation (TR) has experienced fast adoption following commercial approval. Defining the appropriate target population for TEER therapy is important to guide patient selection. The aim of this study was to characterize tricuspid valve anatomy and coaptation gap in subjects receiving TEER for the treatment of TR in a contemporary postmarket setting.

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Introduction: The preference for using transradial access (TRA) over transfemoral access (TFA) in patients requiring percutaneous coronary intervention (PCI) is based on evidence suggesting that TRA is associated with less bleeding and fewer vascular complications, shorter hospital stays, improved quality of life, and a potential beneficial effect on mortality. We have limited study data comparing the two access routes in a patient population with atrial fibrillation (AF) undergoing PCI, who have a particular increased risk of bleeding, while AF itself is associated with an increased risk of thromboembolism.

Methods: Using data from the RIVA-PCI registry, which includes patients with AF undergoing PCI, we analyzed a high-bleeding-risk (HBR) cohort.

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Purpose: To evaluate a novel deep learning (DL)-based automated coronary labeling approach for structured reporting of coronary artery disease according to the guidelines of the Society of Cardiovascular Computed Tomography (CT) on coronary CT angiography (CCTA).

Patients And Methods: A retrospective cohort of 104 patients (60.3 ± 10.

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Background: Aortic valve (AV) repair is an evolving surgical strategy in the treatment of nonelderly adults with aortic regurgitation. We aimed to determine the 1-year outcome after AV repair vs surgical AV replacement (sAVR) using real-world data from the German Aortic Valve Registry.

Methods: A total of 8076 aortic regurgitation patients (mean age, 59.

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Background: Various second-generation transcatheter heart valve (THV) prostheses with high clinical efficacy and safety are available, but there is limited large-scale data available comparing their hemodynamic performance and clinical implications.

Objective: To compare the hemodynamic performance and short-term clinical outcome of four second-generation THV prostheses.

Methods: 24,124 patients out of the German Aortic Valve Registry who underwent transfemoral transcatheter aortic valve implantation (TAVI) (Evolut™ R n = 7028, Acurate neo™ n = 2922, Portico n = 878 and Sapien 3 n = 13,296) were included in this analysis.

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Objective: After transcatheter aortic valve implantation (TAVI), the optimal regimen of anticoagulant therapy in patients with an additional indication for oral anticoagulation remains a matter of debate. This study investigates the efficacy of direct oral anticoagulants (DOACs) versus vitamin K antagonists (VKAs) in patients after TAVI in a real-world population.

Methods: The German Aortic Valve RegistrY (GARY) is a prospective, multicentre registry enrolling patients undergoing invasive treatment for aortic valve disease.

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In today's era of individualized precision medicine drug repurposing represents a promising approach to offer patients fast access to novel treatments. Apart from drug repurposing in cancer treatments, cardiovascular pharmacology is another attractive field for this approach. Patients with angina pectoris without obstructive coronary artery disease (ANOCA) report refractory angina despite standard medications in up to 40% of cases.

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Aims: Identification of high-risk patients and individualized decision support based on objective criteria for rapid discharge after transcatheter aortic valve implantation (TAVI) are key requirements in the context of contemporary TAVI treatment. This study aimed to predict 30-day mortality following TAVI based on machine learning (ML) using data from the German Aortic Valve Registry.

Methods And Results: Mortality risk was determined using a random forest ML model that was condensed in the newly developed TAVI Risk Machine (TRIM) scores, designed to represent clinically meaningful risk modelling before (TRIMpre) and in particular after (TRIMpost) TAVI.

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Background: An effective therapy of persistent atrial fibrillation beyond pulmonary vein isolation remains unsatisfactory. Targeting endocardial low-voltage areas represents an approach of substrate modification. This prospective, randomized study investigated the efficacy of ablation of low-voltage areas versus PVI and additional linear ablations in patients with persistent atrial fibrillation in terms of single-procedure arrhythmia-free outcome and safety.

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Background: Severe tricuspid regurgitation (TR) is known to be associated with substantial morbidity and mortality.

Objectives: The authors sought to study the acute outcomes of subjects treated by tricuspid transcatheter edge-to-edge repair with the TriClip system (Abbott) in a contemporary, real-world setting.

Methods: The bRIGHT (An Observational Real-World Study Evaluating Severe Tricuspid Regurgitation Patients Treated With the Abbott TriClip™ Device) postapproval study is a prospective, single-arm, open-label, multicenter, postmarket registry conducted at 26 sites in Europe.

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