Faculty of Medicine

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Author: search.filters.author.Risteski, D

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    Effects of CRT on atrial and ventricular arrhythmias in patients with HF
    (Oxford University Press (OUP), 2023-05-24)
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    Pocesta, B
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    Janusevski, F
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    Risteski, D
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    <jats:title>Abstract</jats:title> <jats:sec> <jats:title>Funding Acknowledgements</jats:title> <jats:p>Type of funding sources: None.</jats:p> </jats:sec> <jats:sec> <jats:title>Introduction</jats:title> <jats:p>Cardiac resynchronization therapy (CRT) is an accepted treatment for patients with heart failure (HF). Cardiac arrhythmias present a significant and complex issue in this patient group. Evidence exploring the influence of CRT on cardiac arrhythmias rate variations is limited.</jats:p> </jats:sec> <jats:sec> <jats:title>Purpose</jats:title> <jats:p>Our research investigates the effectiveness of CRT in the treatment of existing and newly diagnosed atrial and ventricular arrhythmias, and impact of epicardial lead position on these arrhythmias rate variations, as well as on the CRT response.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods</jats:title> <jats:p>This single-center, prospective, observational study included 75 consecutive patients admitted for CRT implantation over a 12-month period. All included patients had episodes of atrial and/or ventricular arrhythmias, diagnosed by 12-lead ECG or 24-hour Holter monitoring. Pre-procedural demographic characteristics were collected for all patients, including ECG records, NYHA functional class, echocardiographic assessment of left ventricular ejection function and questionnaire for quality-of-life. During device follow up atrial and ventricular arrhythmias appearance was monitored. Additional assessment of echocardiographic parameters, NYHA - functional class, quality of life and rate of major cardiovascular complications and rehospitalizations was performed.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>The mean age of the patients was 62.4 ± 10.3 years, with 74.6% male and 25.3% females. 72% had a non-ischemic HF etiology. Pre-procedural paroxysmal AF was present in 34.7%, persistent AF in 36%, PVCs in 32%, NSVT 16%, and VT in 18,7% patients. 55% of the included patients were responders to CRT. Our results showed decrease in rate of all ventricular arrhythmias, with significant reduction in the percentage of VT (p=0.003), regardless of CRT response. Significant reduction of PVCs and NSVT rate (p=0.012 & p=0.024) was found in the responder group of patients. Regarding AF, our results showed a decrease in the number of AF events in both patient groups, however this was most visible in the responder patients with paroxysmal AF (p=0.057). In CRT responders, left ventricular pacing lead was most commonly located in a lateral branch vein of the CS with middle and mid/lateral position. In terms of quality of life and general condition of the patients, we noticed a significant improvement in the NYHA - functional class (p &lt;0.001), as well as in both parts of the quality-of-life assessment questionnaire (p=0.0135, p&lt;0.001).</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusion</jats:title> <jats:p>CRT is an effective treatment for atrial and ventricular arrhythmias in HF patients, especially in responders to this therapy. LV epicardial lead position proved to be very important influence in the process of LV reverse remodeling, which is in direct correlation of the CRT responders and its effectiveness in reducing the rate of cardiac arrhythmias.</jats:p> </jats:sec>
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    А rare case of left ventricular hypertrophy and non-compaction cardiomyopathy in an adult: diagnostic approach
    (Macedonian Society of Cardiology, 2021-03)
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    Zafirovska, P
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    Risteski, D
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    Left ventricular non-compaction cardiomyopathy (LVNC) is a rare form of primary genetic cardiomyopathy which is characterized by prominent trabeculations and intertrabecular recesses that communicate with the cavity of the left ventricle. The prevalence is between 0.014%-1.3% in the general population. LVNC is associated with different genetic mutations and may have a genetic overlap with the phenotype of other cardiomyopathies, including hypertrophic cardiomyopathy (HCM). In this case report we present a 26-year-old female patient presenting to emergency room with bradycardia and syncope. The transthoracic echocardiography revealed hypertrophy and trabeculations with prominent recesses of the left ventricle. Cardiovascular magnetic resonance imaging (MRI) was performed to confirm the diagnosis of LVNC. The genetic analysis showed mutation of PRKAG2 gene indicating hypertrophic cardiomyopathy with conduction disturbance. In the last years, LVCN and HCM are diagnosed more frequently due to improvements in imaging methods. Although there are many diagnostic tools including contrast ventriculography, CT and MRI, echocardiography is the main imaging method used for diagnostic evaluation of LVNC and HCM. Key words: left ventricular non-compaction cardiomyopathy, hypertrophic cardiomyopathy, echocardiography, cardiovascular magnetic resonance imaging