Publications by authors named "Gabor Zoltan Duray"

Article Synopsis
  • - The study investigates the effectiveness of different balloon treatments after rotational atherectomy (RA) for calcified coronary lesions, focusing on whether modified balloons (MB) improve outcomes compared to plain balloon angioplasty (BA).
  • - A meta-analysis of nine studies involving 1,024 patients found no significant differences in major adverse cardiovascular events, all-cause mortality, or target lesion revascularization between the RA + BA and RA + MB groups overall.
  • - However, the analysis revealed that for patients with severely calcified lesions, the RA + MB group experienced significantly fewer major adverse cardiovascular events without increasing procedural complications.
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Aims: Suboptimal device programming is frequent in non-responders to cardiac resynchronization therapy (CRT). However, the role of device optimization and the most appropriate technique are still unknown. The aim of our study was to analyse the effect of different CRT optimization techniques within a network meta-analysis.

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Background: To preserve the benefit of atrial sensing without the implantation of an additional lead, a single-lead ICD system with a floating atrial dipole (DX ICD) has been developed. The purpose of this nationwide survey was to provide an overview of the current key influences of device selection focusing on DX ICD and to test the applicability of a previously published decision-making flowchart of ICD-type selection.

Methods: An online questionnaire was sent to all implanting centers in Hungary.

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Background: Kidney dysfunction (KD) is a main limiting factor of applying guideline-directed medical therapy (GDMT) and reaching the recommended target doses (TD) in heart failure (HF) with reduced ejection fraction (HFrEF).

Hypothesis: We aimed to assess the success of optimization, long-term applicability, and adherence of neurohormonal antagonist triple therapy (TT:RASi [ACEi/ARB/ARNI] + βB + MRA) according to the KD after a HF hospitalization and to investigate its impact on prognosis.

Methods: The data of 247 real-world, consecutive patients were analyzed who were hospitalized in 2019-2021 for HFrEF and then were followed-up for 1 year.

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(1) Background: Besides the use of guideline-directed medical therapy (GDMT), multidisciplinary heart failure (HF) outpatient care (HFOC) is of strategic importance in HFrEF. (2) Methods: Data from 257 hospitalised HFrEF patients between 2019 and 2021 were retrospectively analysed. Application and target doses of GDMT were compared between HFOC and non-HFOC patients at discharge and at 1 year.

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Introduction: Renal dysfunction is a main limiting factor of applying and up-titrating guideline-directed medical therapy (GDMT) among patients with heart failure with reduced ejection fraction (HFrEF).

Objective: Our retrospective monocentric observational study aimed to analyse the application ratio of combined neurohormonal antagonist therapy (RASi: ACEI/ARB/ARNI + βB + MRA) and 12-month all-cause mortality differences in terms of renal dysfunction among HFrEF patients hospitalized for heart failure.

Method: We retrospectively analysed the cohort of consecutive HFrEF patients, hospitalized at the Heart Failure Unit of our tertiary cardiological centre in 2019-2021.

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Article Synopsis
  • Hospitalization for heart failure (HF) can lead to a poor prognosis, making guideline-directed medical therapy (GDMT) essential for improving patient outcomes, especially for those with reduced ejection fraction (HFrEF).
  • A study at a Hungarian cardiac center assessed the real-world application of key treatments like RASi, βB, MRA, and SGLT2i among HFrEF patients from 2019 to 2021, while also identifying factors influencing therapy optimization.
  • Results showed significant increases in the usage of these therapies during hospitalization, particularly in triple and quadruple therapies, highlighting the successful implementation of GDMT and the potential for improved patient care.
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Article Synopsis
  • This study aimed to analyze sensor data from implantable devices in heart failure patients, comparing their values during stable periods to the times before and after heart failure events.
  • Data from 900 patients were collected over a year, revealing that poorer sensor readings during stable periods were linked to subsequent heart failure events in some patients.
  • The findings indicate that these sensors can help identify worsening conditions before acute heart failure occurs and show recovery after treatment.
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Cardiac implantable electronic devices establish proper therapy for the prevention of sudden cardiac death, significantly reducing the morbidity and mortality of patients with arrhythmias and heart failure. It is well-known that the number of electrodes increases the risk of complications. To preserve the benefit of atrial sensing without the need to implant an additional lead, a single-lead ICD system with a floating atrial dipole (DX ICD lead) has been developed.

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Background: Recently published studies suggested that digoxin may increase mortality in heart failure with reduced ejection fraction (HFrEF). However, in the vast majority of former trials serum digoxin concentration (SDC) was not measured and therapy was not SDC-guided.

Aim: To assess the impact of SDC-guided digoxin therapy on mortality in HFrEF patients.

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Background: Remote monitoring is an established, guideline-recommended technology with unequivocal clinical benefits; however, its ability to improve survival is contradictory.

Objective: The aim of our study was to investigate the effects of remote monitoring on mortality in an optimally treated heart failure patient population undergoing cardiac resynchronization defibrillator therapy (CRT-D) implantation in a large-volume tertiary referral center.

Methods: The population of this single-center, retrospective, observational study included 231 consecutive patients receiving CRT-D devices in the Medical Centre of the Hungarian Defence Forces (Budapest, Hungary) from January 2011 to June 2016.

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Purpose: Pneumothorax (PTX) following cardiac implantable electronic device procedures is traditionally treated with chest tube drainage (CTD). We hypothesized that, in a subset of patients, the less invasive needle aspiration (NA) may also be effective. We compared the strategy of primary NA with that of primary CTD in a single-center observational study.

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Introduction: The Micra Transcatheter Pacing System provides a rate adaptive pacing using an individually programmable three-axis accelerometer. We evaluated the short- and mid-term performance of the Micra activity sensor by testing all three available activity vectors during the exercise tests.

Methods And Results: Implantation and follow-up data were prospectively collected from the patients undergoing Micra implantation at our institution.

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Unlabelled: Patients with conventional pacemakers or implanted defibrillators are often considered for cardiac resynchronization therapy (CRT). Our aim was to summarize the available evidences regarding the clinical benefits of upgrade procedures. A systematic literature search was performed from studies published between 2006 and 2017 in order to compare the outcome of CRT upgrade vs.

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