Michał Marchel

Michał Marchel

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Previous Organizations / Institutes

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Michał Marchel has a total of 886 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Hepatic Steatosis in Pulsed Field Ablation for Atrial Fibrillation: Prevalence, Liver Marker Concordance and Acute Procedural Characteristics

    by Maria Boszko, Bartosz Krzowski, Michał Gawlik, Alicja Skrobucha, Julia Szydlik, Mateusz Wawrzeńczyk, Karolina Mitrzak, Kacper Rutkowski, Karolina Ignaczak, Monika Gawałko, et al.

    Background/Objectives: Hepatic steatosis and metabolic dysfunction-associated steatotic liver disease (MASLD) are cardiometabolic phenotypes relevant to atrial fibrillation (AF), but their prevalence and acute procedural relevance in pulsed field ablation (PFA) are poorly defined. We estimated the prevalence of hepato-renal index (HRI)-detected hepatic steatosis, assessed liver marker concordance, and explored acute procedural characteristics. Methods: In this single-centre prospective study, 99 consecutive eligible patients undergoing first-time PFA for AF underwent B-mode hepatic ultrasound. Hepatic steatosis was defined a priori as HRI ≥ 1.28, measured offline by an investigator blinded to clinical and procedural data. HRI-based MASLD-compatible phenotype, Hepatic Steatosis Index (HSI), BARD score, and Fibrosis-4 index were analysed as secondary liver markers. Results: HRI-detected hepatic steatosis was present in 62/99 patients (62.6%, 95% CI 52.8–71.5), and HRI-based MASLD-compatible phenotype in 55/99 (55.6%, 95% CI 45.7–65.0). Agreement between HRI and HSI was poor (Cohen’s κ = 0.01; prevalence-adjusted bias-adjusted κ +0.06; positive agreement 62%). Acute pulmonary vein isolation was achieved in all patients. First-pass isolation was high in both groups (91.9% vs. 81.1%; p = 0.124). Most procedural metrics were similar. Fluoroscopy dose was modestly higher in patients with steatosis (median 226 vs. 207 mGy; p = 0.035), but this exploratory signal was inconsistent across sensitivity analyses. In-hospital complications were infrequent (4/99, 4.0%). Conclusions: In first-time PFA patients with feasible HRI assessment, hepatic steatosis was common, liver marker classifications showed limited patient-level agreement, and acute procedural conduct showed no consistent steatosis-specific signal. Long-term rhythm durability requires dedicated follow-up.

  • Open Access

    Echocardiographic Features of Cardiac Involvement in Myotonic Dystrophy 1: Prevalence and Prognostic Value

    by Vincenzo Russo, Antonio Capolongo, Roberta Bottino, Andreina Carbone, Alberto Palladino, Biagio Liccardo, Gerardo Nigro, Michał Marchel, Paolo Golino, Antonello D’andrea

    Myotonic dystrophy type 1 (DM1) is the most common muscular dystrophy in adults. Cardiac involvement is reported in 80% of cases and includes conduction disturbances, arrhythmias, subclinical diastolic and systolic dysfunction in the early stage of the disease; in contrast, severe ventricular systolic dysfunction occurs in the late stage of the disease. Echocardiography is recommended at the time of diagnosis with periodic revaluation in DM1 patients, regardless of the presence or absence of symptoms. Data regarding the echocardiographic findings in DM1 patients are few and conflicting. This narrative review aimed to describe the echocardiographic features of DM1 patients and their prognostic role as predictors of cardiac arrhythmias and sudden death.


  • Open Access

    Heart rate control and its predictors in patients with heart failure and sinus rhythm. Data from the European Society of Cardiology Long-Term Registry

    by Agata Tymińska, Krzysztof Ozierański, Marek Wawrzacz, Paweł Balsam, Cezary Maciejewski, Magdalena Kleszczewska, Magdalena Zawadzka, Michał Marchel, Maria G. Crespo-Leiro, Aldo P. Maggioni, et al.

    Background: Higher resting heart rate (HR) in patients with heart failure (HF) and sinus rhythm (SR) is associated with increased mortality. In patients hospitalized for HF, the aim herein, was to assess the use and dosage of guideline-recommended HR lowering medications, HR control at discharge and predictors of HR control. Methods: In the present study, were Polish participants of the European Society of Cardiology HF Long-Term (ESC-HF-LT) Registry. Those selected were hospitalized for HF, with reduced ejection fraction (HFrEF) and SR at discharge (n = 236). The patients were divided in two groups ( < 70 and ≥ 70 bpm). Logistic regression was used to identify the predictors of HR ≥ 70 bpm. Results: Of patients with HFrEF and SR, 59% had HR ≥ 70 bpm at hospital discharge. At discharge, 96% and only 0.5% of the patients with HFrEF and SR received beta-blocker and ivabradine, respectively. In the HF groups < 70 and ≥ 70 bpm, only 11% and 4% of patients received beta-blocker target doses, respectively. There was no difference in the use of other guideline-recommended medications. Age, New York Heart Association class, HR on admission and lack of HR lowering medications were predictors of discharge HR ≥ 70 bpm. Conclusions: Heart rate control after hospitalization for HFrEF is unsatisfactory, which may be attributed to suboptimal doses of beta-blockers, and negligence in use other HR lowering drugs (including ivabradine). Background: Higher resting heart rate (HR) in patients with heart failure (HF) and sinus rhythm (SR) is associated with increased mortality. In patients hospitalized for HF, the aim herein, was to assess the use and dosage of guideline-recommended HR lowering medications, HR control at discharge and predictors of HR control. Methods: In the present study, were Polish participants of the European Society of Cardiology HF Long-Term (ESC-HF-LT) Registry. Those selected were hospitalized for HF, with reduced ejection fraction (HFrEF) and SR at discharge (n = 236). The patients were divided in two groups ( < 70 and ≥ 70 bpm). Logistic regression was used to identify the predictors of HR ≥ 70 bpm. Results: Of patients with HFrEF and SR, 59% had HR ≥ 70 bpm at hospital discharge. At discharge, 96% and only 0.5% of the patients with HFrEF and SR received beta-blocker and ivabradine, respectively. In the HF groups < 70 and ≥ 70 bpm, only 11% and 4% of patients received beta-blocker target doses, respectively. There was no difference in the use of other guideline-recommended medications. Age, New York Heart Association class, HR on admission and lack of HR lowering medications were predictors of discharge HR ≥ 70 bpm. Conclusions: Heart rate control after hospitalization for HFrEF is unsatisfactory, which may be attributed to suboptimal doses of beta-blockers, and negligence in use other HR lowering drugs (including ivabradine).


  • Open Access

    Fifteen-Year Differences in Indications for Cardiac Resynchronization Therapy in International Guidelines—Insights from the Heart Failure Registries of the European Society of Cardiology

    by Agata Tymińska, Krzysztof Ozierański, Emil Brociek, Agnieszka Kapłon-Cieślicka, Paweł Balsam, Michał Marchel, Maria G. Crespo-Leiro, Aldo P. Maggioni, Jarosław Drożdż, Grzegorz Opolski, et al.

    Cardiac resynchronization therapy (CRT) applied to selected patients with heart failure (HF) improves their prognosis. In recent years, eligibility criteria for CRT have regularly changed. This study aimed to investigate the changes in eligibility of real-life HF patients for CRT over the past fifteen years. We reviewed European and North American guidelines from this period and applied them to HF patients from the ESC-HF Pilot and ESC-Long-Term Registries. Taking into consideration the criteria assessed in this study (including all classes of recommendations i.e., class I, IIa and IIb, as well as patients with AF and SR), the 2013 (ESC) guidelines would have qualified the most patients for CRT (266, 18.3%), while the 2015 (ESC) guidelines would have qualified the least (115, 7.9%; p-value for differences between all analyzed papers <0.0001). There were only 26 patients (1.8%) who would be eligible for CRT using the class I recommendations across all of the guidelines. These results demonstrate the variability in recommendations for CRT over the years. Moreover, this data indicates underuse of this form of pacing in HF and highlights the need for more studies in order to improve the outcomes of HF patients and further personalize their management.


  • Open Access

    The prognostic role of interatrial block among COVID‐19 patients hospitalized in medicine wards

    by Vincenzo Russo, Stefano Albani, Alfredo Caturano, Sara Hana Weisz, Valentina Parisi, Maddalena Conte, Lorenzo Zaccaro, Antonello D’aNdrea, Ahmed Al‐Turky, Michal Marchel, et al.

    Introduction: Some abnormal electrocardiographic findings were independently associated with increased mortality in patients admitted for COVID‐19; however, no studies have focussed on the prognosis impact of the interatrial block (IAB) in this clinical setting. The aim of our study was to assess the prevalence and clinical implications of IAB, both partial and advanced, in hospitalized COVID‐19 patients.Materials: We retrospectively evaluated 300 consecutive COVID‐19 patients (63.22 ± 15.16 years; 70% males) admitted to eight Italian Hospitals from February 2020 to April 2020 who underwent twelve lead electrocardiographic recording at admission. The study population has been dichotomized into two groups according to the evidence of IAB at admission, both partial and advanced. The differences in terms of ARDS in need of intubation, in‐hospital mortality and thromboembolic events (a composite of myocardial infarction, stroke and transient ischaemic attack) have been evaluated.Results: The presence of IAB was noticed in 64 patients (21%). In the adjusted logistic regression model, the partial interatrial block was found to be an independent predictor of ARDS in need of intubation (HR: 1.92; p: .04) and in‐hospital mortality (HR: 2.65; p: .02); moreover, the advanced interatrial block was an independent predictor of thrombotic events (HR: 7.14; p < .001).Conclusions: Among COVID‐19 patients hospitalized in medical wards, the presence of interatrial block is more frequent than in the general population and it might be useful as an early predictor for increased risk of incident thrombotic events, ARDS in need of intubation and in‐hospital mortality.


  • Open Access

    Optimal Management of Patients with Severe Coronary Artery Disease following Multidisciplinary Heart Team Approach—Insights from Tertiary Cardiovascular Care Center

    by Szymon Jonik, Michał Marchel, Ewa Pędzich-Placha, Arkadiusz Pietrasik, Adam Rdzanek, Zenon Huczek, Janusz Kochman, Monika Budnik, Radosław Piątkowski, Piotr Scisło, et al.

    Background: The purpose of this retrospective study was to investigate outcomes of patients with severe coronary artery disease (CAD) after implementing various treatment strategies following multidisciplinary Heart Team (MHT) discussion. Methods Primary and secondary endpoints and quality of life during a mean (SD) follow-up of 37 (14) months of patients with severe CAD (three-vessel [3-VD] or/and left main [LM] disease) qualified after MHT discussion to optimal medical treatment (OMT) alone, OMT and coronary artery bypass grafting (CABG), or OMT and percutaneous coronary intervention (PCI) were evaluated. As the primary endpoint, major adverse cardiac or cerebrovascular events (MACCE) (i.e., death from any cause, stroke, myocardial infarction, or repeat/need for revascularization) were considered. Result: From 2016 to 2019, 176 MHT meetings were held, and a total of 1286 participants with severe CAD and completely implemented MHT decisions (OMT, CABG, or PCI for 251, 356, and 679 patients, respectively) were included. The occurrence of the primary endpoint was significantly increased in OMT-group (154 (61.4%) vs. CABG and PCI groups—110 (30.9%) and 302 (44.5%) patients, respectively (p < 0.05). For interventional strategies only—CABG was associated with reduced rates of MACCE and repeat revascularization, while the superiority of PCI for stroke and disabling stroke was observed (p < 0.05). The general health status assessed at the end of the follow-up was significantly better for patients who underwent CABG or PCI than in the OMT group (p < 0.05). Conclusions: In this real-life study, we presented a single-center experience of providing optimal medical care for patients with severe CAD following MHT discussion.


  • Open Access

    Ischemic Cardiomyopathy versus Non-Ischemic Dilated Cardiomyopathy in Patients with Reduced Ejection Fraction— Clinical Characteristics and Prognosis Depending on Heart Failure Etiology (Data from European Society of Cardiology Heart Failure Registries)

    by Agata Tymińska, Krzysztof Ozierański, Paweł Balsam, Cezary Maciejewski, Anna Wancerz, Emil Brociek, Michał Marchel, Maria G. Crespo-Leiro, Aldo P. Maggioni, Jarosław Drożdż, et al.

    Personalized management involving heart failure (HF) etiology is crucial for better prognoses for HF patients. This study aimed to compare patients with ischemic cardiomyopathy (ICM) and patients with non-ischemic dilated cardiomyopathy (NIDCM) in terms of baseline characteristics and prognosis. We assessed 895 patients with HF with reduced left ventricular ejection fraction participating in the Polish part of the European Society of Cardiology (ESC)-HF registries. ICM was present in 583 patients (65%), NIDCM in 312 patients (35%). The ICM patients were older (p < 0.001) and had more comorbidities. The NIDCM patients more frequently had atrial fibrillation (p = 0.04) and lower LVEF (p = 0.01); therefore, they were treated more often with anticoagulants (p = 0.01) and digitalis (p < 0.001). The NIDCM patients were prescribed aldosterone antagonists more often (p = 0.01). There were no other differences as regards the use of HF guideline-recommended medications, implantable cardioverter defibrillators or cardiac resynchronization therapy. The ICM patients were more likely to be treated with statins (p < 0.001) and antiplatelet agents (p < 0.001). All-cause death, as well as all-cause death and readmissions for HF at 12 months, occurred more often in the ICM group compared with the NIDCM group (15.9% vs. 10%, p = 0.016; and 40.9% vs. 28.6%, p = 0.00089, respectively). ICM etiology was an independent predictor of the composite endpoint in the total cohort (p = 0.003). The ICM patients were older and had more comorbidities, whereas the NIDCM patients had lower LVEF. One-year prognosis was worse in the ICM patients than in the NIDCM patients. ICM etiology was independently associated with a worse one-year outcome.


  • Predictors of mortality and cardiovascular outcomes in Emery-Dreifuss muscular dystrophy in a long-term follow-up

    by Michał Marchel, Agnieszka Madej-Pilarczyk, Roman Steckiewicz, Przemysław Stolarz, Michał Peller, Agata Tymińska, Ewa Ostrowska, Krzysztof Ozierański, Paweł Balsam, Marcin Grabowski, et al.

    Emery-Dreifuss muscular dystrophy (EDMD) is an extremely rare muscular dystrophy due to either emerinopathy (EMD) or laminopathy (LMNA). The main risk for patients is that of cardiovascular complications. This study aimed to identify predictors of adverse clinical events in patients with EDMD in a long-term follow-up observation. A total of 45 patients with confirmed EMD or LMNA mutation were included in the study. The relationships between clinical parameters, the overall survival rate, and risk factors for disease progression were assessed. The primary endpoint was defined as death, while the secondary endpoint comprised death, resuscitated cardiac arrest (RCA), heart transplant (HTX), stroke, end-stage heart failure (ESHF), and hospitalization due to heart failure (HF). During a median length of follow-up observation of ten years (interquartile range, 5-15), ten patients (22%) died, one suffered RCA, two had HTX, and six suffered ischemic strokes (13%). Seven patients developed ESHF, and eight were hospitalized due to HF. The secondary endpoint occurred in 16 patients (36%). LMNA mutation (hazard ratio [HR], 6.01; 95% confidence interval [CI], 1.61-22.4; P = 0.008) and higher serum N-terminal fragment of B-type natriuretic peptide (NT-proBNP) concentration (HR, 1.29; 95% CI, 1.06-1.56 per 100 pg/ml; P = 0.01) increased the risk of death. Higher tricuspid annular plane systolic excursion (TAPSE) decreased the risk for the secondary endpoint (HR, 0.78; 95% CI, 0.68-0.90 mm; P 257 pg/ml and TAPSE <21 mm may be assumed as the best cut-off values for the primary and secondary endpoints, respectively. LMNA mutation and higher NT-proBNP concentration were associated with increased mortality in EDMD. Lower TAPSE was a predictor of a composite secondary endpoint in EDMD.


  • Open Access

    Heart Team for Optimal Management of Patients with Severe Aortic Stenosis—Long-Term Outcomes and Quality of Life from Tertiary Cardiovascular Care Center

    by Szymon Jonik, Michał Marchel, Ewa Pędzich-Placha, Zenon Huczek, Janusz Kochman, Piotr Ścisło, Paweł Czub, Radosław Wilimski, Piotr Hendzel, Grzegorz Opolski, et al.

    Background: This retrospective study was proposed to investigate outcomes of patients with severe aortic stenosis (AS) after implementation of various treatment strategies following dedicated Heart Team (HT) decisions. Methods: Primary and secondary endpoints and quality of life during a median follow-up of 866 days of patients with severe AS qualified after HT discussion to: optimal medical treatment (OMT) alone, OMT and transcather aortic valve replacement (TAVR) or OMT and surgical aortic valve replacement (SAVR) were evaluated. As the primary endpoint composite of all-cause mortality, non-fatal disabling strokes and non-fatal rehospitalizations for AS were considered, while other clinical outcomes were determined as secondary endpoints. Results: From 2016 to 2019, 176 HT meetings were held, and a total of 482 participants with severe AS and completely implemented HT decisions (OMT, TAVR and SAVR for 79, 318 and 85, respectively) were included in the final analysis. SAVR and TAVR were found to be superior to OMT for primary and all secondary endpoints (p < 0.05). Comparing interventional strategies only, TAVR was associated with reduced risk of acute kidney injury, new onset of atrial fibrillation and major bleeding, while the superiority of SAVR for major vascular complications and need for permanent pacemaker implantation was observed (p < 0.05). The quality of life assessed at the end of follow-up was significantly better for patients who underwent TAVR or SAVR than in OMT-group (p < 0.05). Conclusions: We demonstrated that after careful implementation of HT decisions interventional strategies compared to OMT only provide superior outcomes and quality of life for patients with AS.


  • Expression of versican mRNA transcript to predict cardiac remodelling after myocardial infarction

    by Aleksandra Chabior, Aleksandra Gąsecka, Michał Marchel, Roksana Gozdowska, Agnieszka Makowska, Karolina Maciak, Monika Góra, Krzysztof J Filipiak, Beata Burzyńska, Grzegorz Opolski

    Background: Adverse left-ventricular remodeling (LVR) is defined as a 20% increase in end-diastolic left-ventricular volume 6 months after acute myocardial infarction (AMI). LVR is associated with cardiac dysfunction, therefore deteriorating the prognosis. Aims: We aimed at comparing the concentrations of messenger RNA transcripts in the peripheral blood of patients with and without LVR at 6 months. Methods: The study included 75 patients with first ST-elevation myocardial infarction (STEMI) treated with percutaneous coronary intervention. Whole blood concentrations of 6 transcripts were determined 24 hours after AMI using droplet digital polymerase chain reaction. The correlations between mRNA transcript expression and left ventricular ejection fraction (LVEF) and N-terminal-pro B type natriuretic peptide (NT-proBNP) concentration were evaluated. Results: Among 75 patients, 4 were lost to follow-up, and 71 were included in the analysis. Seventeen (24%) patients developed LVR at 6 months. Versican (VCAN) mRNA expression was lower in patients who developed LVR, compared to those who did not (P = 0.02), and discriminated between these patients (area under the ROC curve 67%; P = 0.04). Expression of VCAN transcript <75.3 normalized units predicted LVR with 71% sensitivity and 67% specificity. In a multivariable regression analysis, VCAN expression remained the only independent predictor of LVR (OR 3.475; 95% CI, 1.000-12.075; P = 0.04). Conclusions: Dysregulation of VCAN expression in the acute phase of AMI may contribute to LVR at 6 months. Whether decreased expression of VCAN might be a useful tool to predict LVR in clinical practice remains to be established.