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Anderson RH, Kerwin J, Lamers WH, Hikspoors JPJM, Mohun TJ, Chaudhry B, Lisgo S, Henderson DJ. Cardiac development demystified by use of the HDBR atlas. J Anat 2024. [PMID: 38783643 DOI: 10.1111/joa.14066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 05/08/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024] Open
Abstract
Much has been learned over the last half century regarding the molecular and genetic changes that take place during cardiac development. As yet, however, these advances have not been translated into knowledge regarding the marked changes that take place in the anatomical arrangements of the different cardiac components. As such, therefore, many aspects of cardiac development are still described on the basis of speculation rather than evidence. In this review, we show how controversial aspects of development can readily be arbitrated by the interested spectator by taking advantage of the material now gathered together in the Human Developmental Biology Resource; HDBR. We use the material to demonstrate the changes taking place during the formation of the ventricular loop, the expansion of the atrioventricular canal, the incorporation of the systemic venous sinus, the formation of the pulmonary vein, the process of atrial septation, the remodelling of the pharyngeal arches, the major changes occurring during formation of the outflow tract, the closure of the embryonic interventricular communication, and the formation of the ventricular walls. We suggest that access to the resource makes it possible for the interested observer to arbitrate, for themselves, the ongoing controversies that continue to plague the understanding of cardiac development.
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Affiliation(s)
- Robert H Anderson
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Janet Kerwin
- Human Developmental Biology Resource, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Wouter H Lamers
- Department of Anatomy and Embryology, Maastricht University, Maastricht, The Netherlands
| | - Jill P J M Hikspoors
- Department of Anatomy and Embryology, Maastricht University, Maastricht, The Netherlands
| | | | - Bill Chaudhry
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Steven Lisgo
- Human Developmental Biology Resource, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Deborah J Henderson
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
- Human Developmental Biology Resource, Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
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2
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Katritsis DG, Fragakis N, Katritsis G, Doukas V, Marine JE, Desmukh A, Latchamsetty R, Anderson RH, Calkins H. High-resolution mapping of the circuit of typical atrioventricular nodal reentrant tachycardia. J Interv Card Electrophysiol 2024; 67:599-607. [PMID: 37691082 DOI: 10.1007/s10840-023-01632-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 08/30/2023] [Indexed: 09/12/2023]
Abstract
BACKGROUND Recent anatomic and electrophysiologic evidence has provided new insight into the anatomic substrate. Previous reports on electroanatomic mapping (EAM) of the circuit of atrioventricular nodal reentrant tachycardia (AVNRT) have been limited by mapping only the triangle of Koch on the right side of the septum and by the use of conventional mapping tools. The objectives are to obtain comprehensive high-resolution mapping of typical AVNRT and to investigate the role of the atrioventricular ring tissues in the circuit. METHODS We employed EAM with the use of novel modules and algorithms for studying typical AVNRT from the right and the left sides of the septum. RESULTS We performed extensive mapping of both the atrial septum and the septal vestibule of the tricuspid valve during typical AVNRT in 9 (6 females) patients, aged 49.6 ± 12.1 years. In two of these, left septal mapping was also obtained through the aorta. The earliest initial activation was variable, emanating from the superior or medial septum. The impulse consistently appeared below the orifice of the coronary sinus, at the site where its inferoanterior margin merged with the septal vestibule of the tricuspid valve at its entrance to the right atrium. It then returned to the initial activation site, presumably through the septal vestibular myocardium. The left septal activation area corresponded to that recorded on the right side. CONCLUSIONS Typical AVNRT uses a circuit confined within the pyramid of Koch from the AV node to the septal isthmus, involving the myocardial walls of the pyramidal space.
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Affiliation(s)
- Demosthenes G Katritsis
- Hygeia Hospital, 4 Erythrou Stavrou Str, 15123, Athens, Greece.
- Johns Hopkins Hospital, Baltimore, MD, USA.
| | | | | | | | | | - Amrish Desmukh
- University of Michigan Medical School, Ann Arbor, MI, USA
| | | | - Robert H Anderson
- Biosciences Institute, Newcastle University, Newcastle Upon Tyne, UK
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3
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Crucean A, Spicer DE, Tretter JT, Mohun TJ, Anderson RH. Revisiting the anatomy of the right ventricle in the light of knowledge of its development. J Anat 2024; 244:297-311. [PMID: 37814425 PMCID: PMC10780169 DOI: 10.1111/joa.13960] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 10/11/2023] Open
Abstract
Controversies continue regarding several aspects of the anatomy of the morphologically right ventricle. There is disagreement as to whether the ventricle should be assessed in bipartite or tripartite fashion, and the number of leaflets to be found in the tricuspid valve. In particular, there is no agreement as to whether a muscular outlet septum is present in the normally constructed heart, nor how many septal components are to be found during normal development. Resolving these issues is of potential significance to those investigating and treating children with congenitally malformed hearts. With all these issues in mind, we have revisited our own experience in investigating the development and morphology of the normal right ventricle. To assess development, we have examined a large number of datasets, prepared by both standard and episcopic microscopy, from human and murine embryos. In terms of gross anatomy, we have compared dissections of normal autopsied hearts with virtual dissections of datasets prepared using computed tomography. Our developmental and postnatal studies, taken together, confirm that the ventricle is best assessed in tripartite fashion, with the three parts representing its inlet, apical trabecular, and outlet components. The ventricular septum, however, has only muscular and membranous components. The muscular part incorporates a small component derived from the muscularised fused proximal outflow cushions, but this part cannot be distinguished from the much larger part that is incorporated within the free-standing muscular infundibular sleeve. We confirm that the tricuspid valve itself has three components, which are located inferiorly, septally, and antero-superiorly.
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Affiliation(s)
- Adrian Crucean
- Department of Paediatric Cardiac SurgeryBirmingham Women's and Children's HospitalBirminghamUK
| | - Diane E. Spicer
- Congenital Heart CenterAll Children's HospitalSt PetersbergFloridaUSA
| | - Justin T. Tretter
- Department of Pediatric Cardiology, Cleveland Clinic Children's, and the Heart, Vascular, and Thoracic InstituteCleveland ClinicClevelandOhioUSA
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4
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Haq IU, Shabtaie SA, Tan NY, Lachman N, Asirvatham SJ. Anatomy of the Ventricular Outflow Tracts: An Electrophysiology Perspective. Clin Anat 2024; 37:43-53. [PMID: 37337379 DOI: 10.1002/ca.24083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 06/06/2023] [Accepted: 06/08/2023] [Indexed: 06/21/2023]
Abstract
Outflow tract ventricular arrhythmias are the most common type of idiopathic ventricular arrhythmia. A systematic understanding of the outflow tract anatomy improves procedural efficacy and enables electrophysiologists to anticipate and prevent complications. This review emphasizes the three-dimensional spatial relationships between the ventricular outflow tracts using seven anatomical principles. In turn, each principle is elaborated on from a clinical perspective relevant for the practicing electrophysiologist. The developmental anatomy of the outflow tracts is also discussed and reinforced with a clinical case.
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Affiliation(s)
- Ikram U Haq
- Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Samuel A Shabtaie
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Nicholas Y Tan
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Nirusha Lachman
- Department of Anatomy, Mayo Clinic, Rochester, Minnesota, USA
| | - Samuel J Asirvatham
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
- Department of Pediatrics and Adolescent Medicine, Mayo Clinic, Rochester, Minnesota, USA
- Department of Biomedical Engineering, Mayo Clinic, Rochester, Minnesota, USA
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5
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Tucker DL, Lee LJ, Ahmad M, Shaheen N, Gupta S, Najm HK, Hammoud MS, Tretter JT, Karamlou T. Surgical strategies to address re-operative complex left ventricular outflow tract and thoracic aortic pathology: Cleveland Clinic children's experience. Cardiol Young 2023; 33:2559-2566. [PMID: 37013896 DOI: 10.1017/s1047951122003936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
BACKGROUND Complex patients requiring operations on the left ventricular outflow tract, aortic valve, or thoracic aorta after previous repair of aortopathy constitute a challenging group, with limited information guiding decision-making. We aimed to use our institutional experience to highlight management challenges and describe surgical pearls to address them. METHODS Forty-one complex patients with surgery on the left ventricular outflow tract, aortic valve, or aorta at Cleveland Clinic Children's between 2016 and 2021 following previous repair of aortic pathology were retrospectively reviewed. Patients with known connective tissue disease or single ventricle circulation were excluded. RESULTS Median age at index procedure was 23 years (range 0.25-48) with median of 2 prior sternotomies. Previous aortic operations included subvalvular (n = 9), valvular (n = 6), supravalvular (n = 13), and multi-level surgeries (n = 13). Four deaths occurred in median follow-up of 2.5 years. Mean left ventricular outflow tract gradients improved significantly for patients with obstruction (34.9 ± 17.5 mmHg versus 12.6 ± 6.0 mmHg; p < 0.001). Technical pearls include the following: 1) liberal use of anterior aortoventriculoplasty with valve replacement; 2) primarily anterior aortoventriculoplasty following the subpulmonary conus in contrast to more vertical incision for post-arterial switch operation patients; 3) pre-operative imaging of mediastinum and peripheral vasculature for cannulation and sternal re-entry; and 4) proactive use of multi-site peripheral cannulation. CONCLUSIONS Operation to address the left ventricular outflow tract, aortic valve, or aorta following prior congenital aortic repair can be accomplished with excellent outcomes despite high complexity. These procedures commonly include multiple components, including concomitant valve interventions. Cannulation strategies and anterior aortoventriculoplasty in specific patients require modifications.
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Affiliation(s)
- Dominique L Tucker
- Department of Thoracic and Cardiothoracic Surgery, Cleveland Clinic, Cleveland, OH, USA
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Leah J Lee
- Department of Thoracic and Cardiothoracic Surgery, Cleveland Clinic, Cleveland, OH, USA
| | - Munir Ahmad
- Division of Pediatric Cardiac Surgery and the Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Naseeb Shaheen
- Department of Thoracic and Cardiothoracic Surgery, Cleveland Clinic, Cleveland, OH, USA
| | - Sohini Gupta
- Department of Thoracic and Cardiothoracic Surgery, Cleveland Clinic, Cleveland, OH, USA
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Hani K Najm
- Division of Pediatric Cardiac Surgery and the Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Miza Salim Hammoud
- Division of Pediatric Cardiac Surgery and the Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Justin T Tretter
- Department of Pediatric Cardiology, Cleveland Clinic Children's, and the Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Tara Karamlou
- Division of Pediatric Cardiac Surgery and the Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, OH, USA
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Anderson RH, Spicer DE, Sánchez-Quintana D, Macias Y, Kapadia S, Tretter JT. Relationship between the aortic root and the atrioventricular conduction axis. Heart 2023; 109:1811-1818. [PMID: 37400231 DOI: 10.1136/heartjnl-2023-322716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/10/2023] [Indexed: 07/05/2023] Open
Abstract
Damage to the atrioventricular conduction axis continues to be a problem subsequent to transcatheter implantation of aortic valvar prostheses. Accurate knowledge of the precise relationships of the conduction axis relative to the aortic root could greatly reduce the risk of such problems. Current diagrams highlighting these relationships rightly focus on the membranous septum. The current depictions, however, overlook a potentially important relationship between the superior fascicle of the left bundle branch and the nadir of the semilunar hinge of the right coronary leaflet of the aortic valve. Recent histological investigations demonstrate, in many instances, a very close relationship between the left bundle branch and the right coronary aortic leaflet. The findings also highlight two additional variable features, which can be revealed by clinical imaging. The first of these is the extent of an inferoseptal recess of the left ventricular outflow tract. The second is the extent of rotation of the aortic root within the base of the left ventricle. Much more of the conduction axis is within the confines of the circumference of the outflow tract when the root is rotated in counterclockwise fashion as assessed from the perspective of the imager, with this finding itself associated with a much narrower inferoseptal recess. A clear understanding of the marked variability within the aortic root is key to avoiding future problems with atrioventricular conduction.
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Affiliation(s)
- Robert H Anderson
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Diane E Spicer
- Heart Institute, Johns Hopkins All Children's Hospital, St Petersburg, Florida, USA
| | | | - Yolanda Macias
- Department of Medical and Surgical Therapeutics, University of Extremadura, Badajoz, Spain
| | - Samir Kapadia
- Cardiovascular Medicine Department, Heart, Vascular & Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Justin T Tretter
- Cardiovascular Medicine Department, Heart, Vascular & Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
- Department of Pediatric Cardiology, Cleveland Clinic Children's, Cleveland, Ohio, USA
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7
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Tretter JT, Spicer DE, Macías Y, Talbott C, Kasten JL, Sánchez-Quintana D, Kapadia SR, Anderson RH. Vulnerability of the ventricular conduction axis during transcatheter aortic valvar implantation: A translational pathologic study. Clin Anat 2023. [PMID: 36864653 DOI: 10.1002/ca.24032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 03/01/2023] [Indexed: 03/04/2023]
Abstract
The ventricular components of the conduction axis remain vulnerable following transcatheter aortic valvar replacement. We aimed to describe features which may be used accurately by interventionalists to predict the precise location of the conduction axis, hoping better to avoid conduction disturbances. We scanned eight normal adult heart specimens by 3T magnetic resonance, using the images to simulate histological sections in order accurately to place the conduction axis back within the heart. We then used histology, tested in two pediatric hearts, to prepare sections, validated by the magnetic resonance images, to reveal the key relationships between the conduction axis and the aortic root. The axis was shown to have a close relationship to the nadir of the right coronary leaflet, in particular when the aortic root was rotated in counterclockwise fashion. The axis was more vulnerable in the setting of a narrow inferoseptal recess, when the inferior margin of the membranous septum was above the plane of the virtual basal ring, and when minimal myocardium was supporting the right coronary sinus. The features identified in our study are in keeping with the original description provided by Tawara, but at variance with more recent accounts. They suggest that the vulnerability of the axis during transcatheter valvar replacement can potentially be inferred on the basis of knowledge of the position of the aortic root within the ventricular base. If validated by clinical studies, our findings may better permit avoidance of new-onset left bundle branch block following transcatheter aortic valvar replacement.
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Affiliation(s)
- Justin T Tretter
- Department of Pediatric Cardiology, Cleveland Clinic Children's, and Cardiovascular Medicine Department, The Heart, Vascular, & Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA.,Heart Institute, Cincinnati Children's Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Diane E Spicer
- Heart Institute, Johns Hopkins All Children's Hospital, St. Petersburg, Florida, USA.,Congenital Heart Center, UF Health Shands Hospital, Division of Cardiovascular Surgery, Departments of Surgery and Pediatrics, University of Florida, Gainesville, Florida, USA
| | - Yolanda Macías
- Department of Medical and Surgical Therapeutics, Faculty of Veterinary, University of Extremadura, Cáceres, Spain
| | - Cheryl Talbott
- Department of Pathology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Jennifer L Kasten
- Department of Pathology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Damián Sánchez-Quintana
- Department of Human Anatomy and Cell Biology, Faculty of Medicine, University of Extremadura, Badajoz, Spain
| | - Samir R Kapadia
- Cardiovascular Medicine Department, Heart, Vascular & Thoracic Institute, Cleveland Clinic Foundation, Cleveland, Ohio, USA
| | - Robert H Anderson
- Biosciences Institute, Newcastle University, Newcastle-upon-Tyne, UK
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8
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Sun ZY, Li Q, Li J, Zhang MW, Zhu L, Geng J. Echocardiographic evaluation of the right atrial size and function: Relevance for clinical practice. AMERICAN HEART JOURNAL PLUS : CARDIOLOGY RESEARCH AND PRACTICE 2023; 27:100274. [PMID: 38511096 PMCID: PMC10945901 DOI: 10.1016/j.ahjo.2023.100274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Revised: 01/12/2023] [Accepted: 02/13/2023] [Indexed: 03/22/2024]
Abstract
Right atrial (RA) structural and functional evaluations have recently emerged as powerful biomarkers for adverse events in various cardiovascular conditions. Quantitative analysis of the right atrium, usually performed with volume changes or speckle-tracking echocardiography (STE), has markedly changed our understanding of RA function and remodeling. Knowledge of reference echocardiographic values and measurement methods of RA volumes and myocardial function is a prerequisite to introduce RA quantitation in the clinical routine. This review describes the methodology, benefits and pitfalls of measuring RA size and function by echocardiography based on the current understanding of right atrial anatomy and physiological function and provides the current knowledge of right atrial function in related cardiac diseases.
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Affiliation(s)
- Zhen-Yun Sun
- Department of Diagnostic Ultrasound, Shandong First Medical University & Shandong Academy of Medical Sciences, China
| | - Qiao Li
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Jun Li
- Department of Diagnostic Ultrasound, Shandong First Medical University & Shandong Academy of Medical Sciences, China
| | - Ming-Wei Zhang
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Ling Zhu
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - Jing Geng
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
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9
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Pandozi C, Matteucci A, Galeazzi M, Russo M, Lavalle C, Ficili S, Malacrida M, Colivicchi F. New insights into atrioventricular nodal anatomy, physiology, and immunochemistry: A comprehensive review and a proposed model of the slow-fast atrioventricular nodal reentrant tachycardia circuit in agreement with direct potential recordings in the Koch's triangle area. Heart Rhythm 2023; 20:614-626. [PMID: 36634901 DOI: 10.1016/j.hrthm.2023.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 01/04/2023] [Accepted: 01/04/2023] [Indexed: 01/11/2023]
Abstract
Atrioventricular nodal reentrant tachycardia (AVNRT) is the most frequent regular tachycardia in humans. In this review, we describe the most recent discoveries regarding the anatomical, physiological, and molecular biological features of the atrioventricular junction that could underlie the typical slow-fast AVNRT mechanisms, as these insights could lead to the proposal of a new theory concerning the circuit of this arrhythmia. Despite several models have been proposed over the years, the precise anatomical site of the reentrant circuit and the pathway involved in the slow-fast AVNRT have not been conclusively defined. One possible way to evaluate all the hypotheses regarding the nodal tachycardia circuit in humans is to map this circuit. Thus, we tried to identify the slow potential of nodal and inferior extension structures by using automated mapping of atrial activation during both sinus rhythm and typical slow-fast AVNRT. This constitutes a first step toward the definition of nodal area activation in sinus rhythm and during slow-fast AVNRT. Further studies and technical improvements in recording the potentials of the atrioventricular node structures are necessary to confirm our initial results.
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Affiliation(s)
- Claudio Pandozi
- Division of Cardiology, San Filippo Neri Hospital, Rome, Italy.
| | | | - Marco Galeazzi
- Division of Cardiology, San Filippo Neri Hospital, Rome, Italy
| | - Maurizio Russo
- Division of Cardiology, San Filippo Neri Hospital, Rome, Italy
| | - Carlo Lavalle
- Department of Cardiovascular, Respiratory, Nephrological, Anesthesiological and Geriatric Sciences, "Sapienza" University of Rome, Rome, Italy
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10
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Anderson RH, Sánchez-Quintana D, Spicer DE, Farré J, Sternick EB. How does the cardiac impulse pass from the sinus to the atrioventricular node? Heart Rhythm 2022; 19:1738-1746. [PMID: 35660474 DOI: 10.1016/j.hrthm.2022.05.032] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 04/25/2022] [Accepted: 05/17/2022] [Indexed: 11/16/2022]
Abstract
Over a century has passed since Tawara demonstrated the presence of the insulated pathways that extend from the "knoten" at the base of the atrial septum to their ramifications at the ventricular apexes. Having initially doubted the existence of the atrioventricular bundle until reading the monograph produced by Tawara, Keith, together with Flack, soon revealed the presence of the sinus node. Shortly thereafter, Thorel suggested that a special system might be found within the atrial walls, connecting the newly discovered atrial nodes. This prompted the convening of a special session of the German Pathological Society in 1910. The consensus was that no tracts existed within the atrial walls, with Aschoff and Mönckeberg establishing criterions to be met by those proposing recognition of "specialised" atrial conducting pathways. None of those subsequently proposing the presence of such pathways have discussed their findings on the basis of the criterions established at the meeting of 1910. It remains the case, nonetheless, that drawings continue to be offered by cardiological experts showing narrow pathways within the atrial walls that parallel the arrangement used to show the ventricular conduction pathways. A similar drawing adorns the front cover of "Heart Rhythm". We are unaware of any evidence supporting the presence of pathways as illustrated existing within the overall walls of the atrial chambers. In this review, we summarise the evidence that shows, instead, that it is the aggregation of the working atrial cardiomyocytes within the atrial walls that underscores preferential anisotropic interatrial conduction.
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Affiliation(s)
- Robert H Anderson
- Institute of Biosciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | | | - Diane E Spicer
- Johns Hopkins All Children's Hospital, Johns Hopkins University, Saint Petersburg, Florida, USA; Department of Pediatric Cardiology, University of Florida, Gainesville, Florida, USA
| | - Jeronimo Farré
- Fundación Jiménez Díaz University Hospital and Institute of Biomedical Research, Madrid, Spain
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11
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Jansen H, Nürnberg JH, Veltmann C, Hebe J. Anatomy for ablation of atrioventricular nodal reentry tachycardia and accessory pathways. Herzschrittmacherther Elektrophysiol 2022; 33:133-147. [PMID: 35608665 DOI: 10.1007/s00399-022-00860-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 04/17/2022] [Indexed: 11/26/2022]
Abstract
The atrioventricular (AV) valve plane and the central septum are of particular importance for electrophysiological diagnosis and interventional therapy of supraventricular tachycardias because accessory electrical connections of various types may be present in addition to the specific conduction system. Although modern 3D electroanatomic reconstruction systems including high-density mapping can be of great assistance, detailed knowledge of the anatomic structures involved, their complex three-dimensional arrangement, and their electrical properties in conjunction with electrophysiological features of supraventricular arrhythmias is essential for safe and efficient electrophysiological treatment. The aim of this article is to present current anatomical, topographical, and electrophysiological findings against the background of historical, seminal, and still indispensable literature.
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12
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Anderson RH, Sanchez-Quintana D, Farre J, Cabrera JA, Tretter JT, Sternick EB. To the Editor- The anatomical correlations to the atrioventricular node. Heart Rhythm 2022; 19:1397. [PMID: 35595018 DOI: 10.1016/j.hrthm.2022.05.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 05/04/2022] [Indexed: 11/04/2022]
Affiliation(s)
- Robert H Anderson
- Institute of Biosciences, Newcastle University, Newcastle upon Tyne, United Kingdom
| | | | - Jeronimo Farre
- Fundación Jiménez Díaz University Hospital and Institute of Biomedical Research, Madrid, Spain
| | - Jose-Angel Cabrera
- Unidad de Arritmias, Departamento de Cardiologıa, Hospital Universitario Quiron-Salud, Universidad Europea, Madrid, Spain
| | - Justin T Tretter
- The Heart Institute, Cincinnati Children's Hospital Medical Center, Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Eduardo Back Sternick
- Arrhythmia and Electrophysiology Department, Biocor Instituto, Nova Lima, Minas Gerais, Brazil.
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13
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Koneru JN, Ellenbogen KA. Reply to the Editor- The Anatomical Correlations to the Atrioventricular Node. Heart Rhythm 2022; 19:1397-1398. [PMID: 35580825 DOI: 10.1016/j.hrthm.2022.05.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 11/24/2022]
Affiliation(s)
- Jayanthi N Koneru
- Division of Cardiology, Department of Medicine, Virginia Commonwealth University, Richmond, Virginia
| | - Kenneth A Ellenbogen
- Division of Cardiology, Department of Medicine, Virginia Commonwealth University, Richmond, Virginia.
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14
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OUP accepted manuscript. Eur J Cardiothorac Surg 2022; 62:6556265. [DOI: 10.1093/ejcts/ezac205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 03/15/2022] [Indexed: 11/14/2022] Open
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