Wojciech Zasada

Dr. Wojciech Zasada

Cardiology and Cardiovascular Interventions, University Hospital, Kraków, Małopolskie, Poland
orcid

Research Focus & Metrics

Academic Career Length

19Years (2008-Present)

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

Representative Publications

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29 October 2021 in Polish Heart Journal
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Journal Article
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Wojciech ZasadaWojciech Zasada
Wojciech Zasada
BBBeata Bobrowska
Beata Bobrowska
KPKrzysztof Plens
Krzysztof Plens
ADArtur Dziewierz
Artur Dziewierz
ZSZbigniew Siudak
Zbigniew Siudak
SBStanisław Bartuś
Stanisław Bartuś
Acute myocardial infarction (AMI) is an incredibly destructive disease when it occurs in a young patient. Thus, the investigation of the disease presentation and treatment options seem to be particularly important in young patients with AMI. The study objective was to investigate the differences between young and older patients diag-nosed with AMI in terms of clinical characteristics and treatment strategies. The patient data comes from the National Registry of Procedures of Invasive Cardiology (ORPKI). Between 2014 and 2017, data of more than 230 000 patients with a diagnosis of AMI were collected in that registry. Young patients were defined as under 40 years old. Young patients with AMI (n = 3208, 1.3%) compared with older patients with AMI were more often men (86.3% vs. 65.8%; P <0.001) with higher body weight (mean 85.9 vs. 79.7 kg; P <0.001). Typical risk factors of coronary heart disease were less frequent in younger patients than in older patients. However, in the under-40 group, there was a significantly higher number of current smokers (37.5% vs. 23.0%; P <0.001). Young patients with AMI were more often diagnosed with ST-segment elevation myocardial infarction (STEMI; 62.0% vs. 50.0%; P <0.001). Moreover, they had more frequently non-significant ste-nosis in coronary arteries diagnosed (14.4% vs. 6.8%; P <0.001). The left anterior descending artery was more frequently an infarct-related artery in young patients (51.3% vs. 36.3%; P <0.001). Bioresorbable vascular scaffolds were more commonly implanted in young patients with AMI than in the older ones (5.6% vs. 0.9%; P <0.001). The relative number of AMI in the young patients increased from 1.20% in 2014 to 1.43% in 2017. Smoking is the most common risk factor in young adults. The relative number of AMI in young patients is growing.

1 November 2020 in Reports of Practical Oncology and Radiotherapy
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Journal Article
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PCPaulina Czajka-Francuz
Paulina Czajka-Francuz
TFTomasz Francuz
Tomasz Francuz
SCSylwia CJ
Sylwia CJ
ACAleksander Czajka
Aleksander Czajka
MFMarcin Fajkis
Marcin Fajkis
JCJerzy Tadeusz Chudek
Jerzy Tadeusz Chudek
Comparison of 14 cytokines levels between a control group and prospectively enrolled CRC patients to confirm their significance in CRC development. We tested if a model based on 14 cytokines levels could predict prognosis in Caucasian CRC patients treated with 5-FU based chemotherapy. Novel prognostic tools in colorectal cancer (CRC) are necessary to optimize treatment, reduce toxicity and chemotherapy (CHT) costs. We assessed prognostic significance of 14 cytokines: IL-1 beta, IL-1RA, IL-2, IL-4, IL-5, IL-6, IL-7, IL-8, IL-9, IL-10, IL12p70, IL-13, IL-17A in 75 prospectively enrolled CRC patients before initiation of palliative or adjuvant CHT and in 22 control subjects. Readings were taken using the Bio-Plex 200 System. Response to treatment was assessed after 6 months from initiation of CHT. The treated group was divided depending on the response into a progressors (death, progression of disease) and non-progressors group (stable disease, partial response, complete response). We found that increased concentration of IL-8 was a negative prognostic factor in the whole group and palliative subgroup, whereas increased level of IL-10, IL-7, and IL-12p70 was a negative predictor in the adjuvant group CHT. We proposed a statistical model based on circulating cytokine levels, showing a good prognostic value in prediction of the response to CHT (AUC = 0.956). The model, including combined IL-2, IL-8, IL-10 and IL-13 levels, established in the whole treated group, should be validated in larger trials.

14 November 2025 in Medicina
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Journal Article
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Artur DziewierzArtur Dziewierz
Artur Dziewierz
BZBarbara Zdzierak
Barbara Zdzierak
SBStanislaw Bartus
Stanislaw Bartus
Wojciech ZasadaWojciech Zasada
Wojciech Zasada
This perspective comprehensively analyzes the invasive pullback pressure gradient (PPG), a novel physiological index that characterizes the longitudinal distribution of coronary artery disease and guides revascularization strategy modified in 14% of patients in the PPG Global Registry based on PPG assessment. We trace the historical development from subjective pullback curve analysis to a standardized, quantitative metric and describe the procedural aspects of both motorized and manual PPG acquisition. We synthesize evidence supporting PPG’s clinical utility in predicting post-percutaneous coronary intervention outcomes, guiding revascularization decisions, and improving patient-centered outcomes. A central focus is PPG’s mechanistic role in explaining the physiological basis of discordance between fractional flow reserve (FFR) and instantaneous wave-free ratio (iFR), linking focal disease to FFR-positive/iFR-negative patterns and diffuse disease to FFR-negative/iFR-positive patterns. We conclude that PPG represents a fundamental advancement in coronary physiology, shifting clinical focus from individual stenoses to overall disease patterns. This paradigm shift provides deeper understanding of coronary artery disease pathophysiology and offers a powerful predictive tool to guide personalized revascularization strategies. Prospective randomized trials will be essential to solidify its role as a cornerstone of modern interventional cardiology practice.

29 April 2016 in Cardiology Journal
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Journal Article
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PKPawel Kleczynski
Pawel Kleczynski
Wojciech ZasadaWojciech Zasada
Wojciech Zasada
MBMaciej Bagieński
Maciej Bagieński
ŁRŁukasz Rzeszutko
Łukasz Rzeszutko
DSDanuta Sorysz
Danuta Sorysz
DDDariusz Dudek
Dariusz Dudek
Background: The authors analyzed data from Polish national POL-TAVI registry in terms of paravalvular leak (PVL) occurrence after transcatheter aortic valve implantation (TAVI) and its impact on clinical outcomes. Methods: A total of 331 patients with severe aortic stenosis underwent TAVI (Edwards Sapien, n = 141; CoreValve, n = 190). The grade of PVL and survival rate were assessed at 6-month follow-up. Results: One hundred and eighty-one (54.7%) patients developed mild PVL, and 22 (6.6%) — moderate PVL after TAVI. No severe PVLs were observed. Occurrence of moderate PVL was device dependent and more frequent in the CoreValve group (p = 0.02). Larger CoreValve device used correlated with the grade of PVL (Spearman: r = 0.19; p = 0.01), but for Edwards Sapien devices this correlation was inverted (Spearman: r = –0.62; p = 0.01). Six-month mortality rate was not significant between patients with no or mild PVL compared to those with moderate PVL (p = 0.12). Conclusions: The PVL occurrence remains a frequent problem after TAVI and is device de­pendent, more common with Edwards 23 mm valve and 31 mm CoreValve prosthesis Background: The authors analyzed data from Polish national POL-TAVI registry in terms of paravalvular leak (PVL) occurrence after transcatheter aortic valve implantation (TAVI) and its impact on clinical outcomes. Methods: A total of 331 patients with severe aortic stenosis underwent TAVI (Edwards Sapien, n = 141; CoreValve, n = 190). The grade of PVL and survival rate were assessed at 6-month follow-up. Results: One hundred and eighty-one (54.7%) patients developed mild PVL, and 22 (6.6%) — moderate PVL after TAVI. No severe PVLs were observed. Occurrence of moderate PVL was device dependent and more frequent in the CoreValve group (p = 0.02). Larger CoreValve device used correlated with the grade of PVL (Spearman: r = 0.19; p = 0.01), but for Edwards Sapien devices this correlation was inverted (Spearman: r = –0.62; p = 0.01). Six-month mortality rate was not significant between patients with no or mild PVL compared to those with moderate PVL (p = 0.12). Conclusions: The PVL occurrence remains a frequent problem after TAVI and is device de­pendent, more common with Edwards 23 mm valve and 31 mm CoreValve prosthesis

25 October 2022 in Journal of Clinical Medicine
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Journal Article
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Artur DziewierzArtur Dziewierz
Artur Dziewierz
BZBarbara Zdzierak
Barbara Zdzierak
KMKrzysztof Piotr Malinowski
Krzysztof Piotr Malinowski
Zbigniew SiudakZbigniew Siudak
Zbigniew Siudak
Wojciech ZasadaWojciech Zasada
Wojciech Zasada
TRTomasz Rakowski
Tomasz Rakowski
The impact of diabetes mellitus (DM) on outcomes of patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI) was confirmed by several studies. However, it is unclear whether this effect is still present in large groups of unselected patients undergoing up-to-date treatment. Thus, we sought to assess the impact of DM on periprocedural outcomes of primary PCI in STEMI using data from the Polish National Registry of PCI. Data on 150,782 STEMI patients undergoing primary PCI were collected. Of them, 26,360 (17.5%) patients had DM. Patients with DM were higher-risk individuals who experienced longer reperfusion delays and were less likely to have closed infarct-related artery at baseline (TIMI 0 + 1 flow: 73.2% vs. 72.0%; p < 0.0001) and achieve optimal reperfusion after PCI (TIMI 3 flow: 91.8% vs. 88.5%; p < 0.0001). The periprocedural mortality (1.1% vs. 1.9%; p < 0.0001) was higher in patients with DM and DM was identified as an independent predictor of periprocedural death. In conclusion, despite continuous progress in STEMI treatment, DM remains a strong predictor of periprocedural mortality. However, this detrimental effect of DM may be partially explained by the overall higher risk profile of diabetic patients.

19 August 2022 in Advances in Interventional Cardiology
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Journal Article
Open access
Wojciech ZasadaWojciech Zasada
Wojciech Zasada
FMFilip Mikołajczyk
Filip Mikołajczyk
MJMagdalena Jędrychowska
Magdalena Jędrychowska
KMKrzysztof Malinowski
Krzysztof Malinowski
BBBeata Bobrowska
Beata Bobrowska
ADArtur Dziewierz
Artur Dziewierz
Introduction Some patients with coronary heart disease are diagnosed with severe aortic stenosis. For further treatment, coronary angiography is performed in these patients. For intermediate lesions, obtaining coronary artery physiological data can facilitate clinical decision-making regarding...