N Spasova

ORCID: 0009-0005-5566-0297
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Research Areas
  • Cardiovascular Function and Risk Factors
  • Atrial Fibrillation Management and Outcomes
  • Obstructive Sleep Apnea Research
  • Diabetes Treatment and Management
  • Cardiac Arrhythmias and Treatments
  • Pancreatic function and diabetes
  • Diet and metabolism studies
  • Heart Failure Treatment and Management
  • Cardiac Imaging and Diagnostics
  • Cardiovascular Effects of Exercise
  • Cardiovascular Health and Disease Prevention
  • Cardiac Structural Anomalies and Repair
  • Spaceflight effects on biology
  • Adrenal and Paraganglionic Tumors
  • Colorectal Cancer Surgical Treatments
  • Cardiomyopathy and Myosin Studies
  • Sodium Intake and Health
  • Congenital Anomalies and Fetal Surgery
  • Intestinal and Peritoneal Adhesions
  • Food Industry and Aquatic Biology
  • Traditional Chinese Medicine Studies
  • Parasitic infections in humans and animals
  • Cardiovascular and Diving-Related Complications
  • Amyloidosis: Diagnosis, Treatment, Outcomes
  • Appendicitis Diagnosis and Management

Queen Giovanna Hospital
2011-2025

Medical University of Sofia
2024-2025

Parallax Research (United States)
2021

Burkert Pieske Rolf Wachter Sanjiv J. Shah Abigail S. Baldridge Peter Szeczoedy and 95 more Ghionul Ibram Victor Shi Ziqiang Zhao Martín Cowie Aldo Carlos Prado Liza Maria Marcela Wenetz Daniela García Brasca Juan Pablo Albisu Alberto Alfredo Fernandez Alberto Liberman Graciela Echeverria Ines Bartolacci Maria Ranz Mercela Pedrotti Daniela Tapía Marina Robertson Solana Exposito Marcelo Barrionuevo Jorge Hector Resk Guillermo Mercau Ricardo León de la Fuente Horacio Avaca Carlos Poy Miguel Hominal Guillermo Cursack Oscar Ariel Vogelmann Marcelo Martín Casas Marcelo Costantino Josefina Chiriffe Robert Zweiker Lukas J. Motloch Johann Auer Peter Siostrzonek Wilhelm Grander David Derthoo Wilfried Müllens Hans Vandekerckhove Rachid Maamar Marc Delforge Tom Mulleners Salvador Rassi Adrian Kormann Aline Moraes Euler Roberto Fernandes Manenti Gilmar Reis Lília Nigro Maia Marcus Vinı́cius Simões Ricardo Pereira Silva Luiz Cláudio Danzmann José Francisco Kerr Saraiva Maria Christiane Valéria Braga Braile-Sternieri Weimar sebba Barroso de Souza Estêvão Lanna Figueiredo M. Tzekova Boryana Boeva Dimo Vasilev Snezhanka Tomova Tisheva Gospodinova Maria Milanova Valentina Mincheva Kabakchieva Petkana Ivanova Valchanova Bojidar I Dimov Plamen Dimitrov Petrovsky P Georgiev N Spasova Georgi Mazhdrakov Mariana Konteva Haralambi O Benov Stefan Vesselinov Denchev Marie Parent Catherine Demers Danielle Dion Ronald Bourgeois M Heffernan GUSTAVO ADOLFO MORENO SILGADO Franklin Quiroz Alberto Cadena J.L. Mendoza Clara Saldarriaga Camilo Arana Libor Nechvátal Kateřina Linhartová Zdeněk Klimsa Ladislav Busak Dan Marek Josef Slaby Rostislav Polášek Pavel Koleckar Jiri Carda Marta Kaislerova Pavel Trestik Petr Zajíček Jiří Kuchař Jiří Vondrák J Krupicka Tomáš Brychta

<h3>Importance</h3> There is limited evidence on the benefits of sacubitril/valsartan vs broader renin angiotensin system inhibitor background therapy surrogate outcome markers, 6-minute walk distance, and quality life in patients with heart failure mildly reduced or preserved left ventricular ejection fraction (LVEF &gt;40%). <h3>Objective</h3> To evaluate effect N-terminal pro–brain natriuretic peptide (NT-proBNP) levels, medication–based individualized comparators chronic LVEF more than...

10.1001/jama.2021.18463 article EN JAMA 2021-11-16
Kieran F. Docherty Pardeep S. Jhund Olof Bengtsson David L. DeMets Silvio E. Inzucchi and 95 more Lars Køber Mikhail Kosiborod Anna Maria Langkilde Felipe A. Martínez Marc S. Sabatine Mikaela Sjöstrand Scott D. Solomon John J.V. McMurray Mirta Díez Sonia A Sassone Diego Aizenberg María L. Talavera Guillermo Mercau Diego Martínez Juan Pablo Albisu Alejandro Hershson Rubén GarcíaDurán Miguel Hominal Natalia Cluigt Fernando ColomboBerra Eduardo Perna Rodolfo AhuadGuerrero Daniela GarcíaBrasca Cesar Javier Zaidman Claudio Majul José Taborda Hugo A Luquez Jorgelina Sala Alvaro SosaLiprandi Guillermo Cursack Oscar Montaña A Rodríguez Fernández M Najenson S Nani G Caruso Enrique Fairman Stella PereiroGonzalez Lília Nigro Maia Adamastor Humberto Pereira Paulo Roberto Ferreira ROSSI Dalton Bertolim Précoma Fernando Carvalho Neuenschwander Gilmar Reis Fabio Augusto Bronzi Guimarães José Francisco Kerr Saraiva Flavia Arantes Mauro Esteves Hernandes João Carlos de Oliveira Borges Bruno Paolino Eduardo Vasconcellos Euler Roberto Fernandes Manenti Pedro Pimentel Paulo Leães Salvador Rassi Talia Falcão Dalçóquio Tsvetana Katova D Avramov N Spasova Dimitar Raev Boryana Chompalova Maria Milanova Mariya Tokmakova N. Runev Atanas Mihov Antoni Gogov Adriana Dincheva Nikolay Iliev Borislav Kolomanov Yuliyana Ivanova Katya Ilieva Dimitar Karageorgiev Ivo Petrov Nikolay Botushanov S Vladeva Christian Constance Saul Vizel A. Shekhar Pandey Denis-Carl Phaneuf Shamir R. Mehta Dennis Rupka Yves Pesant Paul Poirier R Chehayeb Mohan Babapulle Eileen O’Meara Jonathan G. Howlett Louis Yao Robert S. McKelvie Subodh Verma Michael Hartleib Ram Vijayaraghavan John Vyselaar Fabián Azzari James Cha Farah Nasser-Sharif

OBJECTIVE To determine whether the benefits of dapagliflozin in patients with heart failure and reduced ejection fraction (HFrEF) type 2 diabetes Dapagliflozin And Prevention Adverse-Outcomes Heart Failure trial (DAPA-HF) varied by background glucose-lowering therapy (GLT). RESEARCH DESIGN AND METHODS We examined effect study treatment use or not GLT classes combinations. The primary outcome was a composite worsening (hospitalization urgent visit requiring intravenous therapy) cardiovascular...

10.2337/dc20-1402 article EN Diabetes Care 2020-09-02

Abstract Background: Trimethylamine N-oxide (TMAO) is synthesized by the intestinal microbiota and an independent predictor of cardiovascular disease (CVD). However, its underlying mechanisms remain unclear. We investigated TMAO levels across different CVD-risk patient groups, evaluated associations between vascular alterations (e.g., arterial stiffness, intima-media thickness [IMT], presence grade carotid artery plaques [CAPs]). Methods: examined 95 patients (58.5 ± 7.3 years): 40 with...

10.1042/bsr20232090 article EN Bioscience Reports 2024-04-01

Background: Acute decompensated heart failure (ADHF) is a condition with high frequency of hospitalizations and mortality, obstructive sleep apnea (OSA) common comorbidity. Continuous positive airway pressure (CPAP) therapy at home can be good adjunctive non-drug for these patients. Methods: We conducted single-center, prospective cohort study from 150 consecutive patients hospitalized exacerbation in the cardiology department. Of these, 57 had apnea. After discharge, CPAP was offered....

10.3390/jcm13195676 article EN Journal of Clinical Medicine 2024-09-24

Background: Managing acute decompensated heart failure (ADHF) is complex, particularly when combined with comorbidities like sleep apnea. Effective treatment requires personalized approaches, focusing on quality of life (QoL) and mental health outcomes. Purpose: This study explored the prevalence characteristics apnea in patients obesity AHF exacerbations. It assessed how different phenotypes impact QoL health, applying medicine strategies. Methods: A prospective cohort was conducted 150...

10.3390/jmms12010018 article EN cc-by Journal of Mind and Medical Sciences 2025-04-14
Kieran F. Docherty Pardeep S. Jhund Brian Claggett João Pedro Ferreira Olof Bengtsson and 95 more Silvio E. Inzucchi Lars Køber Mikhail Kosiborod Anna Maria Langkilde Felipe A. Martínez Piotr Ponikowski Marc S. Sabatine Mikaela Sjöstrand Scott D. Solomon John J.V. McMurray John J.V. McMurray David L. DeMets Silvio E. Inzucchi Lars Køber Mikhail Kosiborod Anna Maria Langkilde Felipe A. Martínez Piotr Ponikowski Marc S. Sabatine Mikaela Sjöstrand Scott D. Solomon Mirta Díez José Carlos Nicolau Tzvetana Katova Jonathan G. Howlett Eileen O’Meara Subodh Verma Junbo Ge Jan Bělohlávek Morten Schou Michael Böhm Béla Merkely Vijay Chopra Masahumi Kitakaze Rudolf A. de Boer Jarosław Dróżdż Sergey Tereshchenko Andrej Dukát Charlotta Ljungman Chern‐En Chiang Mark C. Petrie Inder S. Anand Akshay S. Desai Pham Nguyễn Vinh S. Sassone Diego Aizenberg María L. Talavera Guillermo Mercau D. Martínez J Albisu Alejandro Hershson Ruben Garcia Duran Miguel Hominal Natalia Cluigt F. Colombo Berra Eduardo Perna R. A. Ahuad Guerrero Daniela García Brasca Cesar Javier Zaidman Claudio Majul José Taborda Hugo A Luquez J Sala Álvaro Sosa Liprandi Guillermo Cursack Oscar Montaña A Rodríguez Fernández M Najenson S Nani G Caruso Enrique Fairman S Pereiro Gonzalez Lília Nigro Maia Adamastor Humberto Pereira P Rossi Dalton Bertolim Précoma Fernando Carvalho Neuenschwander Gilmar Reis Fabio Augusto Bronzi Guimarães José Francisco Kerr Saraiva Flavia Arantes Mauro Esteves Hernandes João Carlos de Oliveira Borges Bruno Paolino Eduardo Vasconcellos Euler Roberto Fernandes Manenti Pedro Pimentel Paulo Leães Salvador Rassi Talia Falcão Dalçóquio Tzvetana Katova D Avramov N Spasova Dimitar Raev Boryana Chompalova

Sodium glucose cotransporter 2 inhibitors reduce morbidity and mortality in patients with heart failure reduced ejection fraction (HFrEF). Clinicians may find estimates of the projected long-term benefits sodium a helpful addition to clinical trial results when communicating this class drug patients.To estimate treatment effects dapagliflozin HFrEF over duration patient's lifetime.Exploratory analysis was performed Dapagliflozin Prevention Adverse Outcomes Heart Failure (DAPA-HF), phase 3...

10.1001/jamacardio.2021.2632 article EN JAMA Cardiology 2021-07-30

Trimethylamine-N-oxide (TMAO) is a metabolite produced by intestinal microbiota. It well recognized as an independent risk marker for cardiovascular and renal diseases mortality.

10.3897/folmed.66.e132325 article EN cc-by Folia Medica 2024-10-31

Left ventricular (LV) twist serves as a compensatory mechanism in systolic dysfunction and its degree of reduction may reflect more advanced stage disease.The aim was to investigate alterations depending on the functional mitral regurgitation (MR) by speckle-tracking echocardiography.Sixty-three patients with symptomatic dilated cardiomyopathy (DCM) were included. Patients divided according MR vena contracta width (VCW): group 1 VCW <7 mm (mild/moderate MR) 2 ≥7 (severe MR).There no...

10.1159/000485967 article EN Cardiology 2018-01-01

Imbalance of activation and inhibition matrix metalloproteinases (MMPs) lead to an increase in their activity the occurrence pathological changes vascular wall. The purpose this paper is determine role MMP-2 MMP-9 ventricular remodelling patients with heart failure preserved ejection fraction. were divided into three groups: 15 fraction (HFpEF), 72.73 ± 10.44 years old; arterial hypertension (AH), 63.73±7.06 10 healthy controls, 58.7± 5.87 old. Arterial stiffness was assessed by pulse wave...

10.7546/cr-2013-66-2-13101331-18 article EN Proceedings of the Bulgarian Academy of Sciences 2013-01-01

Transthyretin amyloidosis (ATTR) is a systemic disease characterized by the deposition of amyloid &amp;#64257; brils in various tissues, leading to progressive neurological manifestations and development cardiomyopathy, necessitating timely diagnosis treatment. This article presents clinical case 74-year-old patient with hereditary transthyretin (ATTRv), diagnosed using non-invasive imaging methods &amp;ndash; echocardiography, magnetic resonance imaging, single-photon emission computed...

10.3897/bgcardio.30.e141099 article EN cc-by Bulgarian Cardiology 2024-12-31

Background: Acute decompensated heart failure (ADHF) is often associated with central sleep apnea (CSA), which exacerbates cardiovascular strain and impacts quality of life. In ADHF patients, CSA contributes to recurrent nocturnal oxygen desaturation, elevated apnea-hypopnea index (AHI), frequent Cheyne-Stokes respiration episodes, increasing health risks. Echocardiographic monitoring essential in these providing reliable assessment function over time. Sodium-glucose cotransporter-2...

10.3897/bgcardio.30.e140848 article EN cc-by Bulgarian Cardiology 2024-12-31

Background: The prevalence of obesity and hypertension among healthcare professionals has been previously described. Both diseases are known risk factors for atrial cardiomyopathy (ACM), a new clinical entity with potential to be determinant heart failure, &amp;#64257; brillation thromboembolic complications. In this perspective, early preventive strategy should initiated in special population. Aim: To de&amp;#64257; ne ACM middle-aged women professionals. Material methods: Hundred ve...

10.3897/bgcardio.30.e140563 article EN cc-by Bulgarian Cardiology 2024-12-31

Abstract Funding Acknowledgements Type of funding sources: None. Background Atrial fibrillation (AF) is a progressive disease and can initiates maintains in the absence left atrial (LA) enlargement¹´². Echocardiographic parameters LA mechanics had been proposed for best dealing with patients AF³ . Combining different laboratory biomarkers echocardiographic improve prediction, detection treatment AF clinical practice. However, there limited data about significance combination novel prediction...

10.1093/ehjci/jead119.002 article EN European Heart Journal - Cardiovascular Imaging 2023-06-01

Abstract Background Exacerbated heart failure is a condition with high frequency of hospitalizations and mortality, especially in overweight patients. Screening treatment for sleep apnea can be helpful these Purpose To determine the phenotypic characteristics patients exacerbated failure. assess systolic diastolic function obstructive central apnea. follow one year to hospitalization mortality. Methods We conducted single-centre, prospective cohort study form 120 consecutive hospitalized...

10.1093/eurheartj/ehad655.1052 article EN European Heart Journal 2023-11-01

Abstract Background The main factor responsible for atrial cardiomyopathy (ACM) is fibrillation (AF). It known that AF causes remodeling of the left atrium but its effects on right heart chambers and mortality are not well studied. Purpose To assess echocardiographic characteristics patients with long-standing paroxysmal their impact survival. Methods From 624 consecutive only 173 met inclusion criteria cardiomyopathy, defined as severely dilated indexed volume (LAVI) &amp;gt;48 ml/m2,...

10.1093/eurheartj/ehad655.241 article EN European Heart Journal 2023-11-01

The objective of this work was to develop a scientifically sound rationale for the method reflex correction biliary tract dysfunction based on chronobiological data concerning functioning acupuncture points corresponding ducts. It shown that patients presenting with dyskinesia (i.e. forming desynchronism) experience shift both skin temperature and electrical resistance at points. chronoreflexotherapeutic technique employed in study makes it possible rapidly restore disturbed biorhythms...

10.15426/lfk20100417-18 article EN Problems of Balneology Physiotherapy and Exercise Therapy 2010-08-15

Abstract Background Left ventricular (LV) global longitudinal strain (GLS) is a more sensitive parameter than ejection fraction in the assessment of LV function. It has been established as predictor cardiac death and adverse events. In patients with dilated cardiomyopathy (DCM) deformation twist mechanics are reduced varying degrees. Purpose The aim study was to determine different performance patterns DCM advanced heart failure (HF). Methods 52 HF NYHA class III-IV (62 ± 13 years, 36 males)...

10.1093/ehjci/jez319.788 article EN European Heart Journal - Cardiovascular Imaging 2020-01-01

Background: Telemedicine is an alternative to the standard consultation with a specialist during COVID-19 pandemic. Though their benefits are not well studied, phone consultations potential effective resource for providing medical and psycho-social help patients chronic diseases social isolation. Aim: To assess demographic clinical characteristics of patients, who looked cardiology on phone, most common reasons these consultations. Material Methods: We analyzed data 196 consecutive...

10.3897/bgcardio.26.e58060 article EN cc-by Bulgarian Cardiology 2020-12-30
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