Marija Bjelobrk

Dr. Marija Bjelobrk

orcid

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 January 2022 in Medicina
Verified
Journal Article
Open access
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TMTatjana Miljkovic
Tatjana Miljkovic
AIAleksandra Ilić
Aleksandra Ilić
AMAleksandra Milovancev
Aleksandra Milovancev
MBMarija Bjelobrk
Marija Bjelobrk
MSMaja Stefanović
Maja Stefanović
MPMilovan Petrović
Milovan Petrović
Background and Objectives: There is emerging evidence of the usefulness of left atrial strain (LAS) in the assessment of diastolic dysfunction (DD). In this study we assess the sensitivity and specificity of LAS, to determine cut-off values and their association to DD with increased left atrial pressure (LAP) in patients with well-treated arterial hypertension. Materials and Methods: We performed a cross-sectional study on 180 subjects with well-treated arterial hypertension. All patients underwent transthoracic echocardiography. Patients were divided into two groups: a group without increased LAP and/or DD and a group with increased LAP DD. Results: In multivariate logistic regression, LAS proved to be the strongest statistically significant predictor of DD with increased LAP (OR 0.834, p < 0.0005), with AUC 0.885 and a set cut-off value of 24.27% with high sensitivity of 78.9% and specificity of 84.6%. The set cut-off for LAS > 24.27% was significantly highly prevalent in the group of DD with increased LAP 78.9% when compared to the group without increased LAP 15.4%, p < 0.0001. Conclusion: The findings of this study suggest that LAS could be a useful and highly sensitive and specific marker in the evaluation of DD. There is the potential for using LAS in everyday practice as a standard parameter in diastolic function assessment.

18 February 2022 in Medicina
Verified
Journal Article
Open access
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Andrej PrevedenAndrej Preveden
Andrej Preveden
MGMiodrag Golubovic
Miodrag Golubovic
MBMarija Bjelobrk
Marija Bjelobrk
TMTatjana Miljkovic
Tatjana Miljkovic
AIAleksandra Ilić
Aleksandra Ilić
Lazar VelickiLazar Velicki
Lazar Velicki
Background and Objectives: Hypertrophic cardiomyopathy (HCM) is the most common inherited cardiac disease that affects approximately 1 in 500 people. Due to an incomplete disease penetrance associated with numerous factors, HCM is not manifested in all carriers of genetic mutation. Although about two-thirds of patients are male, it seems that female gender is associated with more severe disease phenotype and worse prognosis. The objective of this study was to evaluate the gender related differences in HCM presentation. Materials and Methods: This study was conducted as a part of the international multidisciplinary SILICOFCM project. Clinical information, laboratory analyses, electrocardiography, echocardiography, and genetic testing data were collected for 362 HCM patients from four clinical centers (Florence, Newcastle, Novi Sad, and Regensburg). There were 33% female patients, and 67% male patients. Results: Female patients were older than males (64.5 vs. 53.5 years, p < 0.0005). The male predominance was present across all age groups until the age of 70, when gender distribution became comparable. Females had higher number of symptomatic individuals then males (69% vs. 52%, p = 0.003), most frequently complaining of dyspnea (50% vs. 30%), followed by chest pain (30% vs. 17%), fatigue (26% vs. 13%), palpitations (22% vs. 13%), and syncope (13% vs. 8%). The most common rhythm disorder was atrial fibrillation which was present in a similar number of females and males (19% vs. 13%, p = 0.218). Levels of N-terminal pro-brain natriuretic peptide were comparable between the genders (571 vs. 794 ng/L, p = 0.244). Echocardiography showed similar thickness of interventricular septum (18 vs. 16 mm, p = 0.121) and posterolateral wall (13 vs. 12 mm, p = 0.656), however, females had a lower number of systolic anterior motion (8% vs. 16%, p = 0.020) and other mitral valve abnormalities. Conclusions: Female patients are underrepresented but seem to have a more pronounced clinical presentation of HCM. Therefore, establishing gender specific diagnostic criteria for HCM should be considered.

10 July 2024 in Life
Verified
Journal Article
Open access
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ISIlija Lj Srdanovic
Ilija Lj Srdanovic
MSMaja Stefanović
Maja Stefanović
AMAleksandra Milovančev
Aleksandra Milovančev
AVAleksandra Vulin Vulin
Aleksandra Vulin Vulin
TPTeodora Pantić
Teodora Pantić
Lazar VelickiLazar Velicki
Lazar Velicki
Background: There is evidence that right ventricular (RV) contractile function, especially its coupling with the pulmonary circulation, has an important prognostic value in patients with left ventricular dysfunction. Aims: This study aimed to identify the best echocardiographic parameters of RV function and pulmonary artery systolic pressure (PASP) alone or in the form of the index of right ventricular-pulmonary artery coupling (RV-PA coupling) to determine the best predictor of 1-year major adverse cardiovascular events (MACE), which were defined as cardiovascular death and cardiac decompensation in heart failure patients with reduced ejection fraction (HFrEF). Methods and results: The study enrolled 191 HFrEF patients (mean age 62.28 ± 12.79 years, 74% males, mean left ventricular ejection fraction (LVEF) 25.53 ± 6.87%). All patients underwent clinical, laboratory, and transthoracic echocardiographic (TTE) evaluation, focusing on assessing RV function and non-invasive parameters of RV-PA coupling. RV function was evaluated using fractional area change (FAC), tricuspid annular plane systolic excursion (TAPSE), and peak tricuspid annular systolic velocity (TAS’). PASP was estimated by peak tricuspid regurgitation velocity (TRVmax) and corrected by assumed right atrial pressure relative to the dimension and collapsibility of the inferior vena cava. The TAPSE/PASP and TAS’/PASP ratios were taken as an index of RV-PA coupling. During the follow-up (mean period of 340 ± 84 days), 58.1% of patients met the composite endpoint. The independent predictors of one-year outcome were shown to be advanced age, atrial fibrillation, indexed left atrial systolic volume (LAVI), LVEF, TAPSE/PASP, and TAS’/PASP. TAS’/PASP emerged as the strongest independent predictor of prognosis, with a hazard ratio (HR) of 0.67 (0.531–0.840), p < 0.001. Reconstructing the ROC curve 0.8 (0.723–0.859), p < 0.001, we obtained a threshold value of TAS’/PASP ≤ 0.19 (cm/s/mm Hg) (sensitivity 74.0, specificity 75.2). Patients with TAS’/RVSP ≤ 0.19 have a worse prognosis (Log Rank p < 0.001). Conclusions: This study confirmed previously known independent predictors of adverse outcomes in patients with HfrEF—advanced age, atrial fibrillation, LAVI, and LVEF—but non-invasive parameters of RV-PA coupling TAPSE/PASP and TAS’/PASP improved risk stratification in patients with HFrEF. Variable TAS’/PASP has been shown to be the most powerful, independent predictor of one-year outcome.

26 April 2024 in Medicina
Verified
Journal Article
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MKMila Kovacevic
Mila Kovacevic
Marko AtanaskovićMarko Atanasković
Marko Atanasković
KOKatarina Obradovic
Katarina Obradovic
MTMirko Vlado Todić
Mirko Vlado Todić
BCBranislav Crnomarkovic
Branislav Crnomarkovic
ISIlija Lj Srdanovic
Ilija Lj Srdanovic
Percutaneous closure of the patent foramen ovale (PFO) is generally regarded as a safe and effective procedure, indicated in patients with a prior PFO-associated stroke. While it is highly safe, rarely, it could be accompanied by a migration of the device, mainly caused by the interplay of a specific PFO morphology and inappropriate device sizing. Herein, we outline a seldom-observed complication of an unintentional detachment of the PFO closure device during implantation, leading to its migration into the abdominal aorta, and a unique management approach. Due to the inability to recapture the occluder with a snare, which is considered to be a mainstay of endovascular retrieval methods, two coronary guidewires were maneuvered through the mesh of the occluder and then captured with a snare proximally to the occluder. This innovative dual-wire–snare system was carefully pulled to the common femoral artery, a position deemed suitable for surgical extraction via arteriotomy, which was achieved successfully.

26 August 2021 in Acta Cardiologica
Verified
Journal Article
Closed access
MBMarija Bjelobrk
Marija Bjelobrk
TMTatjana Miljković
Tatjana Miljković
AIAleksandra Ilić
Aleksandra Ilić
AMAleksandra Milovančev
Aleksandra Milovančev
AVAleksandra Vulin
Aleksandra Vulin
SDSlobodan Dodić
Slobodan Dodić
Study examines the influence of cardiac rehabilitation program (CR) on left ventricular diastolic dysfunction (LVDD), functional capacity and major cardiovascular risk factors (CVRF) in patients af...

25 December 2023 in Medicina
Verified
Journal Article
Open access
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RJRadojka Joksic-Mazinjanin
Radojka Joksic-Mazinjanin
NMNikolina Marić
Nikolina Marić
AĐAleksandar Đuričin
Aleksandar Đuričin
MBMarija Bjelobrk
Marija Bjelobrk
SBSnežana Bjelić
Snežana Bjelić
MKMila Kovacevic
Mila Kovacevic
The relationship between coronavirus disease 2019 (COVID-19) and myocardial injury was established at the onset of the COVID-19 pandemic. An increase in the incidence of out-of-hospital cardiac arrest was also observed. This case report aims to point to the prothrombotic and proinflammatory nature of coronavirus infection, leading to simultaneous coronary vessel thrombosis and subsequently to out-of-hospital cardiac arrest. During the COVID-19 pandemic, a 46-year-old male patient with no comorbidities suffered out-of-hospital cardiac arrest (OHCA) with ventricular fibrillation as the first recorded rhythm. The applied cardiopulmonary resuscitation (CPR) measures initiated by bystanders and continued by emergency medical service (EMS) resulted in the return of spontaneous circulation. The stabilized patient was transferred to the tertiary university center. Electrocardiogram (ECG) revealed “lambda-like” ST-segment elevation in DI and aVL leads, necessitating an immediate coronary angiography, which demonstrated simultaneous occlusion of the left anterior descending (LAD) and right coronary artery (RCA). Primary percutaneous coronary intervention (PCI) with the implantation of one drug-eluting stent (DES) in LAD and two DES in RCA was done. Due to the presence of cardiogenic shock (SCAI C), an intra-aortic balloon pump (IABP) was implanted during the procedure, and due to the comatose state and shockable cardiac arrest, targeted temperature management was initiated. The baseline chest X-ray revealed bilateral interstitial infiltrates, followed by increased proinflammatory markers and a positive polymerase chain reaction (PCR) test for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) demasking underlying COVID-19-related pneumonia. Within the following 48 h, the patient was hemodynamically stable, which enabled weaning from IABP and vasopressor discontinuation. However, due to the worsening of COVID-19 pneumonia, prolonged mechanical ventilation, together with antibiotics and other supportive measures, was needed. The applied therapy resulted in clinical improvement, and the patient was extubated and finally discharged on Day 26, with no neurological sequelae and with mildly reduced left ventricle ejection fraction.