dc.contributor.author | Herweg B | |
dc.contributor.author | Nellaiyappan M | |
dc.contributor.author | Welter-Frost A.M | |
dc.contributor.author | Tran T | |
dc.contributor.author | Mabry G | |
dc.contributor.author | Weston K | |
dc.contributor.author | Tobón C | |
dc.contributor.author | Saiz J | |
dc.contributor.author | Noujaim S | |
dc.contributor.author | Weston M.W. | |
dc.date.accessioned | 2022-09-14T14:33:49Z | |
dc.date.available | 2022-09-14T14:33:49Z | |
dc.date.created | 2021 | |
dc.identifier.issn | 19413149 | |
dc.identifier.uri | http://hdl.handle.net/11407/7486 | |
dc.description | Background: The formation of recipient-to donor atrio-atrial connections (AAC) in patients after orthotopic heart transplantation (OHT) is poorly understood. We sought to investigate the mechanisms of atrial tachyarrhythmias after OHT, the role of AACs, and their relationship to the immunologic match. Methods: In a large series of OHT patients, we performed a retrospective review of 42 patients who underwent catheter ablation for atrial arrhythmias. A realistic 3-dimensional computer model of human atria was used to study AAC conductivity. Results: Patient age was 55±15 years (71% male). Biatrial anastomosis was present in 24/42 patients (57%). An AAC was found in 9/42 patients (21%, right-sided in 5 patients with biatrial anastomosis, left-sided in 4 patients). The AAC became apparent at the time of the electrophysiology study 10.1±7.6 years after OHT (range, 0.3-22.2 years). Donor-specific antibodies were present in no patient with AAC but were present in 69% of patients without AAC, P=0.002. In all patients with AAC, a recipient atrial tachycardia propagated via AAC to the donor atrium (4 patients presented with atrial fibrillation). Simulations showed AAC conduction requires an isthmus of ≥2 mm and is cycle length and location dependent. Patients without AAC (n=13) frequently presented with donor atrial arrhythmias, in 77% cavo-tricuspid isthmus flutter was ablated. The procedural success was high, although, 12 patients (29%) required reablation. Conclusions: AACs are found in 21% of OHT patients with atrial tachyarrhythmias and can manifest very early after OHT. Immune privilege characterized by the absence of donor-specific antibodies may facilitate AAC formation. Propagation across an AAC is width, cycle length, and location dependent. Patients with AAC present with focal atrial tachycardias or atrial fibrillation originating from the recipient atria; patients without most frequently present with cavo-tricuspid isthmus dependent atrial flutter. While multiple arrhythmias frequently require reablation, ablative therapy is highly effective. Graphic Abstract: A graphic abstract is available for this article. © 2021 American Heart Association, Inc. | eng |
dc.language.iso | eng | |
dc.publisher | Lippincott Williams and Wilkins | |
dc.relation.isversionof | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85104626921&doi=10.1161%2fCIRCEP.120.008751&partnerID=40&md5=42dee4cbc3bd427accda6f41fa650d2c | |
dc.source | Circulation: Arrhythmia and Electrophysiology | |
dc.title | Immuno-Electrophysiological Mechanisms of Functional Electrical Connections between Recipient and Donor Heart in Patients with Orthotopic Heart Transplantation Presenting with Atrial Arrhythmias | |
dc.type | Article | |
dc.rights.accessrights | info:eu-repo/semantics/restrictedAccess | |
dc.publisher.program | Ciencias Básicas | |
dc.type.spa | Artículo | |
dc.identifier.doi | 10.1161/CIRCEP.120.008751 | |
dc.subject.keyword | Atrial fibrillation | eng |
dc.subject.keyword | Catheter ablation | eng |
dc.subject.keyword | Electrophysiology | eng |
dc.subject.keyword | Heart transplantation | eng |
dc.subject.keyword | Tachycardia | eng |
dc.relation.citationstartpage | 412 | |
dc.relation.citationendpage | 423 | |
dc.publisher.faculty | Facultad de Ciencias Básicas | |
dc.affiliation | Herweg, B., Department of Cardiovascular Sciences, University of South Florida, Morsani College of Medicine, United States, Tampa General HospitalFL, United States | |
dc.affiliation | Nellaiyappan, M., Department of Cardiovascular Sciences, University of South Florida, Morsani College of Medicine, United States | |
dc.affiliation | Welter-Frost, A.M., Department of Cardiovascular Sciences, University of South Florida, Morsani College of Medicine, United States | |
dc.affiliation | Tran, T., Department of Cardiovascular Sciences, University of South Florida, Morsani College of Medicine, United States, Tampa General HospitalFL, United States | |
dc.affiliation | Mabry, G., Department of Cardiovascular Sciences, University of South Florida, Morsani College of Medicine, United States | |
dc.affiliation | Weston, K., Department of Cardiovascular Sciences, University of South Florida, Morsani College of Medicine, United States | |
dc.affiliation | Tobón, C., Nanostructured Materials and Bio-modeling (MATBIOM), Universidad de Medellín, Colombia | |
dc.affiliation | Saiz, J., Centro de Investigación e Innovación en Bioingeniería (Ci2B), Universitat Politècnica de València, Spain | |
dc.affiliation | Noujaim, S., Department of Cardiovascular Sciences, University of South Florida, Morsani College of Medicine, United States, Molecular Pharmacology and Physiology, University of South Florida, Morsani College of Medicine, United States | |
dc.affiliation | Weston, M.W., Department of Cardiovascular Sciences, University of South Florida, Morsani College of Medicine, United States, Tampa General HospitalFL, United States | |
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dc.type.coar | http://purl.org/coar/resource_type/c_6501 | |
dc.type.version | info:eu-repo/semantics/publishedVersion | |
dc.type.driver | info:eu-repo/semantics/article | |
dc.identifier.reponame | reponame:Repositorio Institucional Universidad de Medellín | |
dc.identifier.repourl | repourl:https://repository.udem.edu.co/ | |
dc.identifier.instname | instname:Universidad de Medellín | |