scholarly journals Vascularization fo the cardiac conduction system in humans by the right coronary artery

2008 ◽  
Vol 22 (S1) ◽  
Author(s):  
Patricia M Herrera ◽  
Adelina Rojas ◽  
Carlos F. Cichero ◽  
Adrián J. Barceló ◽  
Manuel Arteaga ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Right Coronary Artery ◽  
Conduction System ◽  
Cardiac Conduction ◽  
Cardiac Conduction System ◽  
The Right

scholarly journals Sudden Unexpected Death Associated with Arrhythmogenic Cardiomyopathy: Study of the Cardiac Conduction System

Diagnostics ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1323
Author(s):  
Giulia Ottaviani ◽  
Graziella Alfonsi ◽  
Simone G. Ramos ◽  
L. Maximilian Buja
Keyword(s):  
Fibromuscular Dysplasia ◽  
Ventricular Myocardium ◽  
Conduction System ◽  
Cardiac Conduction ◽  
Future Research ◽  
Cardiac Conduction System ◽  
Arrhythmogenic Cardiomyopathy ◽  
Unexpected Death ◽  
The Past ◽  
The Right

A retrospective study was conducted on pathologically diagnosed arrhythmogenic cardiomyopathy (ACM) from consecutive cases over the past 34 years (n = 1109). The anatomo-pathological analyses were performed on 23 hearts diagnosed as ACM (2.07%) from a series of 1109 suspected cases, while histopathological data of cardiac conduction system (CCS) were available for 15 out of 23 cases. The CCS was removed in two blocks, containing the following structures: Sino-atrial node (SAN), atrio-ventricular junction (AVJ) including the atrio-ventricular node (AVN), the His bundle (HB), the bifurcation (BIF), the left bundle branch (LBB) and the right bundle branch (RBB). The ACM cases consisted of 20 (86.96%) sudden unexpected cardiac death (SUCD) and 3 (13.04%) native explanted hearts; 16 (69.56%) were males and 7 (30.44%) were females, ranging in age from 5 to 65 (mean age ± SD, 36.13 ± 16.06) years. The following anomalies of the CCS, displayed as percentages of the 15 ACM SUCD cases in which the CCS has been fully analyzed, have been detected: Hypoplasia of SAN (80%) and/or AVJ (86.67%) due to fatty-fibrous involvement, AVJ dispersion and/or septation (46.67%), central fibrous body (CFB) hypoplasia (33.33%), fibromuscular dysplasia of SAN (20%) and/or AVN (26.67%) arteries, hemorrhage and infarct-like lesions of CCS (13.33%), islands of conduction tissue in CFB (13.33%), Mahaim fibers (13.33%), LBB block by fibrosis (13.33%), AVN tongue (13.33%), HB duplicity (6.67%%), CFB cartilaginous meta-hyperplasia (6.67%), and right sided HB (6.67%). Arrhythmias are the hallmark of ACM, not only from the fatty-fibrous disruption of the ventricular myocardium that accounts for reentrant ventricular tachycardia, but also from the fatty-fibrous involvement of CCS itself. Future research should focus on application of these knowledge on CCS anomalies to be added to diagnostic criteria or at least to be useful to detect the patients with higher sudden death risks.

Coronary Morphology and Conduction System Disturbance Induced by Therapeutic Embolization of the Coronary Septal Artery

2010 ◽  
Vol 13 (1) ◽  
pp. 45 ◽  
Author(s):  
Otoni M. Gomes ◽  
Ant�nio Alves Coelho ◽  
Evandro C�sar Vidal Osterne ◽  
Rafael Diniz Abrantes
Keyword(s):  
Coronary Artery ◽  
Right Coronary Artery ◽  
First Grade ◽  
Therapeutic Embolization ◽  
Conduction System ◽  
Alcohol Ablation ◽  
Before And After ◽  
Obstructive Hypertrophic Cardiomyopathy ◽  
Bundle Branch Blocks ◽  
The Right

Background: Percutaneous transluminal septal myocardial alcohol ablation (PTSMAA) is not a procedure without complications. It may produce heart arrhythmias, especially those due to disturbances of atrioventricular (AV) and interventricular (IV) electrical conduction.Objective: The goal of this study was to evaluate the relationship between the anatomical patterns of the right coronary artery and the left anterior descending artery (LAD) and to relate them to the AV and IV bundle branch blocks provoked by PTSMAA.Method: Twenty patients with obstructive hypertrophic cardiomyopathy resistant to treatment with drugs successfully underwent PTSMAA. Electrocardiographic analyses were done before and after PTSMAA, and the results were compared with the abnormal septal anatomy.Results: The effectiveness of PTSMAA was obtained in 18 (90%) of the 20 patients by ethanolization of the first great septal branch. In the other 2 patients (10%), 2 septal branches underwent alcoholization. First-grade temporary AV block (AVB) was observed in 6 patients (30%). Ten patients experienced severe bradycardia due to total AVB that required a temporary pacemaker, but 3 of the patients (15%) required a permanent pacemaker. Fourteen patients (70%) experienced permanent complete right branch block, and 2 developed incomplete left anterior block and incomplete left posterior block. Six patients presented with no electrical conduction disturbance at all.Conclusion: According to the results of the present investigation with the AV node artery derived from the right coronary artery in all cases, complete and permanent AV conduction system blockade occurred after PTSMAA in all types of anatomy regarding the observed LAD.

Histopathological Re-Study of the Human Cardiac Conduction System in Coroners' Autopsies

1985 ◽  
Vol 25 (1) ◽  
pp. 29-43 ◽  
Author(s):  
Niriellage Chandrasiri
Keyword(s):  
Coronary Artery Disease ◽  
Coronary Artery ◽  
Conduction System ◽  
Cardiac Conduction ◽  
Cardiac Conduction System ◽  
Successful Result ◽  
Age Related ◽  
Autopsy Diagnosis ◽  
Artery Disease ◽  
Age Related Changes

The histopathology of the cardiac conduction system was studied in 75 coroners' autopsies. Existing methods have been simplified and are described in detail. A minimum of three ***5 u sections need to be cut from each vena cavo atrial strip and each atrio ventricular block, for a successful result. Reasons for failure, difficulties in interpretation, and age-related changes in histopathological features are discussed. Fatty infilteration commences at 33 years old and fibrosis at 43 years old. Conduction system studies do not seem to increase the accuracy of routine autopsy diagnosis in deaths due to coronary artery disease. However, its study in unexpected sudden death in the young should be made compulsory. The difficulties in performing choline esterase tests on conduction systems are also highlighted.

scholarly journals Sudden Unexpected Death Associated with Arrhythmogenic Cardiomyopathy: Study of the Cardiac Conduction System

2021 ◽  
Author(s):  
Giulia Ottaviani ◽  
Graziella Alfonsi ◽  
Simone G. Ramos ◽  
Anna M. Lavezzi ◽  
L. Maximilian Buja
Keyword(s):  
Fibromuscular Dysplasia ◽  
Ventricular Myocardium ◽  
Conduction System ◽  
Cardiac Conduction ◽  
Careful Examination ◽  
Cardiac Conduction System ◽  
Arrhythmogenic Cardiomyopathy ◽  
Unexpected Death ◽  
The Past ◽  
The Right

A retrospective study was conducted on pathologically diagnosed arrhythmogenic cardiomyopathy (ACM) from consecutive cases over the past 34 years (n = 1,109). The cardiac conduction system (CCS) was removed in two blocks, containing the following structures: Sino-atrial node (SAN), atrio-ventricular junction (AVJ) including the atrio-ventricular node (AVN), the His bundle (HB), the bifurcation (BIF), the left bundle branch (LBB) and the right bundle branch (RBB). The ACM cases (2.07% of the total cases) consisted of 20 (86.96%) sudden unexpected cardiac death (SUCD) and 3 (13.04%) native explanted hearts; 16 (69.56%) were males and 7 (30.44%) were females, ranging in age from 5 to 65 (mean age ± SD, 36.13 ± 16.06) years. The following anomalies of the CCS, displayed as percentages of ACM SUCD cases, have been detected: Hypoplasia of SAN (80%) and/or AVJ (86.67%) due to fatty-fibrous involvement, AVJ dispersion and/or septation (46.67%), central fibrous body (CFB) hypoplasia (33.33%), fibromuscular dysplasia of SAN (20%) and/or AVN (26.67%) arteries, hemorrhage and infarct-like lesions of CCS (13.33%), islands of conduction tissue in CFB (13.33%), Mahaim fibers (13.33%), LBB block by fibrosis (13.33%), AVN tongue (13.33%), HB duplicity (6.67%%), CFB cartilaginous meta-hyperplasia (6.67%), and right sided HB (6.67%). Arrhythmias are the hallmark of ACM, not only from the fatty-fibrous disruption of the ventricular myocardium that accounts for reentrant ventricular tachycardia, but also from the fatty-fibrous involvement of CCS itself. The careful examination of the cardiac conduction system on serial sections was crucial in documenting the fatty-fibrous infiltration of CCS in ACM.

Immediate results of bypass grafting of the territory of the right coronary artery using the 'Penza Coronary Technology'

2019 ◽  
Vol 25 (2) ◽  
pp. 137
Author(s):  
E. V. Rosseĭkin ◽  
V. V. Bazylev ◽  
E. E. Kobzev ◽  
A. B. Voevodin ◽  
P. A. Batrakov ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Right Coronary Artery ◽  
Bypass Grafting ◽  
The Right

Right Coronary Artery Fistula Draining into the Right Atrium and Associated with Mitral Valve Stenosis: A Case Report

2007 ◽  
Vol 10 (4) ◽  
pp. E325-E328 ◽  
Author(s):  
Ali Gürbüz ◽  
Ufuk Yetkin ◽  
Ömer Tetik ◽  
Mert Kestelli ◽  
Murat Yesil
Keyword(s):  
Case Report ◽  
Coronary Artery ◽  
Mitral Valve ◽  
Right Coronary Artery ◽  
Right Atrium ◽  
Coronary Artery Fistula ◽  
Mitral Valve Stenosis ◽  
The Right

A Giant Right Coronary Artery of Diffuse Ectasia Induced by a Right Ventricular Fistula

2015 ◽  
Vol 18 (6) ◽  
pp. 253
Author(s):  
Renyuan Li ◽  
Yiming Ni ◽  
Peng Teng ◽  
Weidong Li
Keyword(s):  
Coronary Artery ◽  
Right Coronary Artery ◽  
Artery Bypass ◽  
Coronary Artery Fistula ◽  
Rare Entity ◽  
Fistula Closure ◽  
Unique Case ◽  
Coronary Ectasia ◽  
The Right ◽  
Giant Size

<p>Coronary artery fistula (CAF) is a rare entity. Sometimes it may associate with mild diffuse or segmental coronary ectasia. CAF with giant coronary artery is exceptionally rare. We present a unique case of a 49-year-old female patient with a giant right coronary artery of diffuse ectasia coexisting with a fistula draining into the right ventricle. To our best knowledge, CAF with diffuse coronary ectasia of such giant size has never been reported. The patient was treated successfully by resection of the dilated right coronary artery, fistula closure, and coronary artery bypass grafting.</p>

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