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Prech M, Kaczmarzyk-Radka A, Gwizdek T, Szymkiewicz P. Conduction latency in left bundle branch pacing in heart failure patient. J Electrocardiol 2024; 84:161-164. [PMID: 38733733 DOI: 10.1016/j.jelectrocard.2024.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 04/21/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024]
Abstract
Since the introduction of left bundle branch pacing (LBBP), a search for precise parameters confirming successful capture of conduction system was conducted. Most of the proposed electrocardiographic criteria refer to patients with narrow QRS complexes. We present a patient with heart failure in whom cardiac resynchronization was achieved using conduction system pacing. While measuring left ventricular activation time, an isoelectric interval of 74 ms between stimulus and R-wave appeared resulting in prolongation of V6 RWPT to 124 ms. Considering the immediate narrowing of QRS complexes following LBBP, the observed latency most probably reflects prolonged conduction time through the His-Purkinje system.
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Affiliation(s)
- Marek Prech
- Department of Cardiology, District Hospital, Leszno, Kiepury 45, 64-100 Leszno, Poland.
| | | | - Tomasz Gwizdek
- Department of Cardiology, District Hospital, Leszno, Kiepury 45, 64-100 Leszno, Poland
| | - Paweł Szymkiewicz
- Department of Cardiology, 4th Military Hospital, Wroclaw, Weigla 5, 50-981 Wroclaw, Poland
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Szymczak A, Jędruchniewicz N, Torelli A, Kaczmarzyk-Radka A, Coluccio R, Kłak M, Konieczny A, Ferenc S, Witkiewicz W, Montomoli E, Miernikiewicz P, Bąchor R, Dąbrowska K. Antibodies specific to SARS-CoV-2 proteins N, S and E in COVID-19 patients in the normal population and in historical samples. J Gen Virol 2021; 102. [PMID: 34816794 PMCID: PMC8742988 DOI: 10.1099/jgv.0.001692] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) has spread globally; recognition of immune responses to this virus will be crucial for coronavirus disease 2019 (COVID-19) control, prevention and treatment. We comprehensively analysed IgG and IgA antibody responses to the SARS-CoV-2 nucleocapsid protein (N), spike protein domain 1 (S1) and envelope protein (E) in: SARS-CoV-2-infected patient, healthy, historical and pre-epidemic samples, including patients' medical, epidemiological and diagnostic data, virus-neutralizing capability and kinetics. N-specific IgG and IgA are the most reliable diagnostic targets for infection. Serum IgG levels correlate to IgA levels. Half a year after infection, anti-N and anti-S1 IgG decreased, but sera preserved virus-inhibitory potency; thus, testing for IgG may underestimate the protective potential of antibodies. Historical and pre-epidemic sera did not inhibit SARS-CoV-2, thus its circulation before the pandemic and a protective role from antibodies pre-induced by other coronaviruses cannot be confirmed by this study.
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Affiliation(s)
- Aleksander Szymczak
- Hirszfeld Institute of Immunology and Experimental Therapy, Wrocław, Poland.,Regional Specialist Hospital in Wrocław, Research and Development Center, Wrocław, Poland
| | - Natalia Jędruchniewicz
- Regional Specialist Hospital in Wrocław, Research and Development Center, Wrocław, Poland
| | | | - Agata Kaczmarzyk-Radka
- Regional Specialist Hospital in Wrocław, Research and Development Center, Wrocław, Poland
| | | | - Marlena Kłak
- Regional Specialist Hospital in Wrocław, Research and Development Center, Wrocław, Poland
| | - Andrzej Konieczny
- Department of Nephrology and Transplantation Medicine, Wroclaw Medical University, Wroclaw, Poland
| | - Stanisław Ferenc
- Regional Specialist Hospital in Wrocław, Research and Development Center, Wrocław, Poland
| | - Wojciech Witkiewicz
- Regional Specialist Hospital in Wrocław, Research and Development Center, Wrocław, Poland.,VisMederi Srl, Siena, Italy
| | - Emanuele Montomoli
- Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy
| | | | - Remigiusz Bąchor
- Hirszfeld Institute of Immunology and Experimental Therapy, Wrocław, Poland.,Faculty of Chemistry, University of Wroclaw, Wroclaw, Poland
| | - Krystyna Dąbrowska
- Hirszfeld Institute of Immunology and Experimental Therapy, Wrocław, Poland.,Regional Specialist Hospital in Wrocław, Research and Development Center, Wrocław, Poland
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Romaszkiewicz R, Lewczuk J, Kaczmarzyk-Radka A, Lenartowska L, Błaszczyk D, Konieczny A, Witkiewicz W. [The role of spiral computer tomography in diagnostic algorithms in patients with suspected pulmonary embolism]. Przegl Lek 2013; 70:128-130. [PMID: 24003666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The recognizing of the EP is still not satisfied because specifity and sensitivity of clinical symptoms is relatively low. SCT is an important examination in the diagnostic of pulmonary embolism and is the alternative to often nonconclusive scintigraphy and conclusive but invasive pulmonary angiography. The authors describe the role of SCT in the diagnostic algorithm of the suspected pulmonary embolism of the high and not high risk, discuss the interpretation of result of SCT due to the sort of SCT (SDCT or MDCT) and to clinical probability of PE and they discuss the problem of subsegmental PE.
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Affiliation(s)
- Renata Romaszkiewicz
- Wrovasc--Zintegrowane Centrum Medycyny, Sercowo Naczyniowej, Wojewódzki Szpital Specjalistyczny we Wrocławiu, Ośrodek Badawczo-Rozwojowy.
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Kaczmarzyk-Radka A, Lenartowska L, Lewczuk J. [Dysfunction of coagulation processes in patients after acute coronary syndrome--therapeutic implications]. Pol Merkur Lekarski 2010; 28:293-296. [PMID: 20491340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
In the guidelines for patients with acute coronary syndrome (ACS), reperfusion, antiplatelet treatment, completed with parenteral anticoagulant are the standard therapy. It is because ACS is the result of occlusion of related artery by thrombus compound mostly of platelets, with processes of aggregation and adhesion in its pathogenesis. However, many patients after ACS experience major adverse cardiovascular events (MACE) despite optimal long term antiplatelet therapy. The possible reasons seem to be not only the resistance to this drugs but also underestimated coagulation processes. This review describes the dysfunction of particular coagulation parameters in patients with coronary artery disease and their relationship with MACE after ACS.
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Affiliation(s)
- Agata Kaczmarzyk-Radka
- Oddzial Kardiologii z Pododzialem Intensywnego Nadzoru Kardiologicznego, Wojewódzki Szpital Specjalistyczny, Ośrodek Badawczo Rozwojowy we Wrocławiu.
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