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Petersen A, Nagel SN, Hamm B, Elgeti T, Schaafs LA. The influence of left bundle branch block on myocardial T1 mapping. Sci Rep 2024; 14:5379. [PMID: 38438510 PMCID: PMC10912434 DOI: 10.1038/s41598-024-55821-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 02/28/2024] [Indexed: 03/06/2024] Open
Abstract
Tissue characterisation using T1 mapping has become an established magnetic resonance imaging (MRI) technique to detect myocardial diseases. This retrospective study aimed to determine the influence of left bundle branch block (LBBB) on T1 mapping at 1.5 T. Datasets of 36 patients with LBBB and 27 healthy controls with T1 mapping (Modified Look-Locker inversion-recovery (MOLLI), 5(3)3 sampling) were included. T1 relaxation times were determined on mid-cavity short-axis images. R2 maps were generated as a pixel-wise indicator for the goodness of the fit of T1 maps. R2 values were significantly lower in patients with LBBB than in healthy controls (whole myocardium/septum, 0.997, IQR, 0.00 vs. 0.998, IQR, 0.00; p = 0.008/0.998, IQR, 0.00 vs. 0.999, IQR, 0.00; p = 0.027). Manual correction of semi-automated evaluation tended to improve R2 values but not significantly. Strain analysis was performed and the systolic dyssynchrony index (SDIglobal) was calculated as a measure for left ventricular dyssynchrony. While MRI is generally prone to artefacts, lower goodness of the fit in LBBB may be mainly attributable to asynchronous contraction. Therefore, careful checking of the source data and, if necessary, manual post-processing is important. New techniques might improve the goodness of the fit of T1 mapping by reducing sampling in the motion prone diastole of LBBB patients.
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Affiliation(s)
- Antonia Petersen
- Department of Radiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12203, Berlin, Germany.
| | - Sebastian Niko Nagel
- Academic Department of Diagnostic and Interventional Radiology and Paediatric Radiology, Protestant Hospital of the Bethel Foundation, Bielefeld University, Medical School and University Medical Center East Westphalia-Lippe, Burgsteig 13, 33617, Bielefeld, Germany
| | - Bernd Hamm
- Department of Radiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Thomas Elgeti
- Department of Radiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12203, Berlin, Germany
| | - Lars-Arne Schaafs
- Department of Radiology, Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Hindenburgdamm 30, 12203, Berlin, Germany
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Huang Z, Herbozo Contreras LF, Yu L, Truong ND, Nikpour A, Kavehei O. S4D-ECG: A Shallow State-of-the-Art Model for Cardiac Abnormality Classification. Cardiovasc Eng Technol 2024:10.1007/s13239-024-00716-3. [PMID: 38332408 DOI: 10.1007/s13239-024-00716-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 01/02/2024] [Indexed: 02/10/2024]
Abstract
PURPOSE This study introduces an algorithm specifically designed for processing unprocessed 12-lead electrocardiogram (ECG) data, with the primary aim of detecting cardiac abnormalities. METHODS The proposed model integrates Diagonal State Space Sequence (S4D) model into its architecture, leveraging its effectiveness in capturing dynamics within time-series data. The S4D model is designed with stacked S4D layers for processing raw input data and a simplified decoder using a dense layer for predicting abnormality types. Experimental optimization determines the optimal number of S4D layers, striking a balance between computational efficiency and predictive performance. This comprehensive approach ensures the model's suitability for real-time processing on hardware devices with limited capabilities, offering a streamlined yet effective solution for heart monitoring. RESULTS Among the notable features of this algorithm is its strong resilience to noise, enabling the algorithm to achieve an average F1-score of 81.2% and an AUROC of 95.5% in generalization. The model underwent testing specifically on the lead II ECG signal, exhibiting consistent performance with an F1-score of 79.5% and an AUROC of 95.7%. CONCLUSION It is characterized by the elimination of pre-processing features and the availability of a low-complexity architecture that makes it suitable for implementation on numerous computing devices because it is easily implementable. Consequently, this algorithm exhibits considerable potential for practical applications in analyzing real-world ECG data. This model can be placed on the cloud for diagnosis. The model was also tested on lead II of the ECG alone and has demonstrated promising results, supporting its potential for on-device application.
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Affiliation(s)
- Zhaojing Huang
- School of Biomedical Engineering, The University of Sydney, Darlington, NSW, Australia.
| | | | - Leping Yu
- School of Biomedical Engineering, The University of Sydney, Darlington, NSW, Australia
| | - Nhan Duy Truong
- School of Biomedical Engineering, The University of Sydney, Darlington, NSW, Australia
| | - Armin Nikpour
- Central Clinical School of the University of Sydney, Camperdown, NSW, Australia
- Royal Prince Alfred Hospital, Camperdown, NSW, Australia
| | - Omid Kavehei
- School of Biomedical Engineering, The University of Sydney, Darlington, NSW, Australia
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Lin KS, Kurnick A, Goel R, Gorbut I, Friedman A, Schrem E, McFarlane SI, Bukharovich I. Myocardial Bridging of Mid-left Anterior Descending Artery (LAD) Presenting As Transient Left Bundle Branch Block During Nuclear Stress Test. Cureus 2024; 16:e54654. [PMID: 38523980 PMCID: PMC10959828 DOI: 10.7759/cureus.54654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/21/2024] [Indexed: 03/26/2024] Open
Abstract
Transient left bundle branch block occurring during a nuclear stress test in the setting of myocardial bridging is a relatively rare finding. We report a case of a 75-year-old male who presented with typical stable angina. Serial troponins were negative, and the electrocardiogram revealed normal sinus rhythm with left ventricular hypertrophy and T-wave inversions in the lateral leads. The nuclear stress test was non-ischemic but showed a transient left bundle branch block associated with chest pain and shortness of breath that occurred right after the administration of regadenoson. Coronary angiography revealed non-obstructive coronary artery disease and a mid-LAD myocardial bridge.
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Affiliation(s)
- Kai Shiang Lin
- Internal Medicine, State University of New York Downstate Medical Center, Brooklyn, USA
| | - Adam Kurnick
- Medicine, State University of New York Downstate Health Sciences University, Brooklyn, USA
| | - Ridhima Goel
- Internal Medicine, State University of New York Downstate Medical Center, Brooklyn, USA
| | - Igal Gorbut
- Internal Medicine, Saba University School of Medicine, Saba, NLD
| | - Adam Friedman
- Cardiology, State University of New York Downstate Medical Center, Brooklyn, USA
| | - Ezra Schrem
- Cardiology, State University of New York Downstate Medical Center, Brooklyn, USA
| | - Samy I McFarlane
- Internal Medicine, State University of New York Downstate Medical Center, Brooklyn, USA
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Huang S, Wang J, Zhang W, Gao F, Chen Y, Shui W, Xing X, Chen S, Mu Y. Clinical study of left ventricular structure and function in patients with Anderson-Fabry disease before and after enzyme replacement therapy. JOURNAL OF CLINICAL ULTRASOUND : JCU 2024; 52:20-29. [PMID: 37883130 DOI: 10.1002/jcu.23592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/23/2023] [Accepted: 10/10/2023] [Indexed: 10/27/2023]
Abstract
AIMS Cardiac left ventricular hypertrophy (LVH) is the most common manifestation of heart involvement in Anderson-Fabry disease (AFD). Conventional cardiac imaging is not sensitive enough to detect early signs of LVH in AFD. It remains uncertain whether enzyme replacement therapy (ERT) can prevent LVH progression and improve myocardial function. This study aimed to assess the effectiveness of two-dimensional speckle tracking echocardiography (2D-STE) in early detection of cardiac involvement in AFD and monitoring the efficacy of agalsidase alfa and agalsidase beta therapy. METHODS AND RESULTS Thirteen consecutive AFD patients and 12 healthy controls underwent standard transthoracic 2D, color Doppler, tissue Doppler echocardiography, and 2D strain analysis. Global longitudinal strain (GLS) and global circumferential strain (GCS) were measured. Diastolic strain rate (SR) was extracted. Compared to healthy subjects, AFD patients without LVH showed lower levels of GLS (p < 0.001) and SR (p = 0.01), while there was no difference in GCS (p = 0.82). Following treatment, apical circumferential strain (ACS) showed improvement (p = 0.01). CONCLUSION In AFD patients without LVH, there was a decrease in global and segmental LS. Higher plasma Lyso-GL-3 concentrations were associated with elevated ACS values after ERT, indicating that ACS in AFD patients without LVH, albeit normal, is involved in early LV dysfunction.
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Affiliation(s)
- Shuyue Huang
- Department of Ultrasound, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jian Wang
- Department of Ultrasound, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Wei Zhang
- Department of Neurology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Feng Gao
- Department of Ultrasound, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yaodong Chen
- Department of Ultrasound, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Wen Shui
- Department of Ultrasound, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Xueqing Xing
- Department of Ultrasound, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Shuqiong Chen
- Department of Ultrasound, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yixuan Mu
- Department of Ultrasound, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
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5
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Pujol-López M, Tolosana JM, Upadhyay GA, Mont L, Tung R. Left Bundle Branch Block: Characterization, Definitions, and Recent Insights into Conduction System Physiology. Cardiol Clin 2023; 41:379-391. [PMID: 37321688 DOI: 10.1016/j.ccl.2023.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Left bundle branch block (LBBB) is not just a simple electrocardiogram alteration. The intricacies of this general terminology go beyond simple conduction block. This review puts together current knowledge on the historical concept of LBBB, clinical significance, and recent insights into the pathophysiology of human LBBB. LBBB is an entity that affects patient diagnosis (primary conduction disease, secondary to underlying pathology or iatrogenic), treatment (cardiac resynchronization therapy or conduction system pacing for heart failure), and prognosis. Recruiting the left bundle branch with conduction system pacing depends on the complex interaction between anatomy, site of pathophysiology, and delivery tools.
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Affiliation(s)
- Margarida Pujol-López
- Arrhythmia Section, Cardiology Department, Institut Clínic Cardiovascular, Hospital Clínic de Barcelona, Universitat de Barcelona, C/ Villarroel 170, Barcelona, Catalonia 08036, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Catalonia, Spain
| | - José M Tolosana
- Arrhythmia Section, Cardiology Department, Institut Clínic Cardiovascular, Hospital Clínic de Barcelona, Universitat de Barcelona, C/ Villarroel 170, Barcelona, Catalonia 08036, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Catalonia, Spain; Centro de Investigación Biomédica en Red Enfermedades Cardiovasculares, Madrid, Spain
| | - Gaurav A Upadhyay
- Center for Arrhythmia Care, Pritzker School of Medicine, University of Chicago, The University of Chicago Medicine, Heart and Vascular Center, 5841 South Maryland Avenue, Chicago, IL 60637, USA
| | - Lluís Mont
- Arrhythmia Section, Cardiology Department, Institut Clínic Cardiovascular, Hospital Clínic de Barcelona, Universitat de Barcelona, C/ Villarroel 170, Barcelona, Catalonia 08036, Spain; Institut d'Investigacions Biomèdiques August Pi i Sunyer, Barcelona, Catalonia, Spain; Centro de Investigación Biomédica en Red Enfermedades Cardiovasculares, Madrid, Spain
| | - Roderick Tung
- Center for Arrhythmia Care, Pritzker School of Medicine, University of Chicago, The University of Chicago Medicine, Heart and Vascular Center, 5841 South Maryland Avenue, Chicago, IL 60637, USA.
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Ciucă Anghel DM, Nițescu GV, Tiron AT, Guțu CM, Baconi DL. Understanding the Mechanisms of Action and Effects of Drugs of Abuse. Molecules 2023; 28:4969. [PMID: 37446631 DOI: 10.3390/molecules28134969] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 06/18/2023] [Accepted: 06/22/2023] [Indexed: 07/15/2023] Open
Abstract
AIM Drug abuse and addiction are major public health concerns, with millions of people worldwide affected by the negative consequences of drug use. To better understand this complex issue, a review was conducted to examine the mechanisms of action and effects of drugs of abuse, including their acute and chronic effects, the symptoms of abstinence syndrome, as well as their cardiovascular impacts. METHODS The analyzed data were obtained after surveying an electronic database, namely PubMed, with no time limit, grey literature sources, and reference lists of relevant articles. RESULTS The review highlights the different categories of drugs of abuse, such as opioids, stimulants, depressants, hallucinogens, and cannabis, and discusses the specific ways that each drug affects the brain and body. Additionally, the review explores the short-term and long-term effects of drug abuse on the body and mind, including changes in brain structure and function, physical health problems, and mental health issues, such as depression and anxiety. In addition, the review explores the effects of drug abuse on cardiovascular health, focusing on electrocardiogram changes. Moreover, the analysis of relevant literature also highlighted possible genetic susceptibility in various addictions. Furthermore, the review delves into the withdrawal symptoms that occur when someone stops using drugs of abuse after a period of chronic use. CONCLUSION Overall, this review provides a comprehensive overview of the current state of knowledge on drug abuse and addiction. The findings of this review can inform the development of evidence-based prevention and intervention strategies to address this critical public health issue.
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Affiliation(s)
| | - Gabriela Viorela Nițescu
- Ward ATI-Toxicology, Paediatric Clinic 2, "Grigore Alexandrescu" Emergency Clinical Hospital for Children, 011732 Bucharest, Romania
| | - Andreea-Taisia Tiron
- Department of Medical Semiology, Sf. Ioan Emergency Clinical Hospital, Carol Davila University of Medicine and Pharmacy, 20021 Bucharest, Romania
| | - Claudia Maria Guțu
- Department of Toxicology, Carol Davila University of Medicine and Pharmacy, 20021 Bucharest, Romania
| | - Daniela Luiza Baconi
- Department of Toxicology, Carol Davila University of Medicine and Pharmacy, 20021 Bucharest, Romania
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Parisi V, Baldassarre R, Ferrara V, Ditaranto R, Barlocco F, Lillo R, Re F, Marchi G, Chiti C, Di Nicola F, Catalano C, Barile L, Schiavo MA, Ponziani A, Saturi G, Caponetti AG, Berardini A, Graziosi M, Pasquale F, Salamon I, Ferracin M, Nardi E, Capelli I, Girelli D, Gimeno Blanes JR, Biffi M, Galiè N, Olivotto I, Graziani F, Biagini E. Electrocardiogram analysis in Anderson-Fabry disease: a valuable tool for progressive phenotypic expression tracking. Front Cardiovasc Med 2023; 10:1184361. [PMID: 37416917 PMCID: PMC10320218 DOI: 10.3389/fcvm.2023.1184361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Accepted: 06/09/2023] [Indexed: 07/08/2023] Open
Abstract
Background Electrocardiogram (ECG) has proven to be useful for early detection of cardiac involvement in Anderson-Fabry disease (AFD); however, little evidence is available on the association between ECG alterations and the progression of the disease. Aim and Methods To perform a cross sectional comparison of ECG abnormalities throughout different left ventricular hypertrophy (LVH) severity subgroups, providing ECG patterns specific of the progressive AFD stages. 189 AFD patients from a multicenter cohort underwent comprehensive ECG analysis, echocardiography, and clinical evaluation. Results The study cohort (39% males, median age 47 years, 68% classical AFD) was divided into 4 groups according to different degree of left ventricular (LV) thickness: group A ≤ 9 mm (n = 52, 28%); group B 10-14 mm (n = 76, 40%); group C 15-19 mm (n = 46, 24%); group D ≥ 20 mm (n = 15, 8%). The most frequent conduction delay was right bundle branch block (RBBB), incomplete in groups B and C (20%,22%) and complete RBBB in group D (54%, p < 0.001); none of the patients had left bundle branch block (LBBB). Left anterior fascicular block, LVH criteria, negative T waves, ST depression were more common in the advanced stages of the disease (p < 0.001). Summarizing our results, we suggested ECG patterns representative of the different AFD stages as assessed by the increases in LV thickness over time (Central Figure). Patients from group A showed mostly a normal ECG (77%) or minor anomalies like LVH criteria (8%) and delta wave/slurred QR onset + borderline PR (8%). Differently, patients from groups B and C exhibited more heterogeneous ECG patterns: LVH (17%; 7% respectively); LVH + LV strain (9%; 17%); incomplete RBBB + repolarization abnormalities (8%; 9%), more frequently associated with LVH criteria in group C than B (8%; 15%). Finally, patients from group D showed very peculiar ECG patterns, represented by complete RBBB + LVH and repolarization abnormalities (40%), sometimes associated with QRS fragmentation (13%). Conclusions ECG is a sensitive tool for early identification and long-term monitoring of cardiac involvement in patients with AFD, providing "instantaneous pictures" along the natural history of AFD. Whether ECG changes may be associated with clinical events remains to be determined.
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Affiliation(s)
- V. Parisi
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - R. Baldassarre
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - V. Ferrara
- Unità Ospedaliera Cardiologia, Azienda Sanitaria Territoriale Pesaro Urbino, Fano, Italy
| | - R. Ditaranto
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - F. Barlocco
- Department of Experimental and Clinical Medicine, Careggi University Hospital, University of Florence, Florence, Italy
| | - R. Lillo
- Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - F. Re
- Cardiology Department, San Camillo-Forlanini Hospital, Rome, Italy
| | - G. Marchi
- Internal Medicine Unit and MetabERN Health Care Provider, Azienda Ospedaliera Universitaria Integrata di Verona, Verona, Italy
| | - C. Chiti
- Department of Experimental and Clinical Medicine, Careggi University Hospital, University of Florence, Florence, Italy
| | - F. Di Nicola
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - C. Catalano
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - L. Barile
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - M. A. Schiavo
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - A. Ponziani
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - G. Saturi
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - A. G. Caponetti
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - A. Berardini
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Bologn, Italy
| | - M. Graziosi
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Bologn, Italy
| | - F. Pasquale
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Bologn, Italy
| | - I. Salamon
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - M. Ferracin
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - E. Nardi
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
| | - I. Capelli
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
- Nephrology, Dialysis and Renal Transplant Unit, IRCCS, Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- European Rare Kidney Disease Reference Network-ERKNet, Bologna, Italy
| | - D. Girelli
- Internal Medicine Unit and MetabERN Health Care Provider, Azienda Ospedaliera Universitaria Integrata di Verona, Verona, Italy
| | - J. R. Gimeno Blanes
- Inherited Cardiac Disease Unit, University Hospital Virgen de la Arrixaca, Murcia, Spain
| | - M. Biffi
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Bologn, Italy
| | - N. Galiè
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy
- European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Bologn, Italy
| | - I. Olivotto
- Department of Experimental and Clinical Medicine, University of Florence, Meyer University Children Hospital and Careggi University Hospital, Florence, Italy
| | - F. Graziani
- Department of Cardiovascular Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - E. Biagini
- Cardiology Unit, Cardiac Thoracic and Vascular Department, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
- European Reference Network for Rare, Low Prevalence and Complex Diseases of the Heart-ERN GUARD-Heart, Bologn, Italy
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The Primary Alteration of Ventricular Myocardium Conduction: The Significant Determinant of Left Bundle Branch Block Pattern. Cardiol Res Pract 2022; 2022:3438603. [PMID: 36589707 PMCID: PMC9800102 DOI: 10.1155/2022/3438603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/24/2022] Open
Abstract
Intraventricular conduction disturbances (IVCD) are currently generally accepted as ECG diagnostic categories. They are characterized by defined QRS complex patterns that reflect the abnormalities in the intraventricular sequence of activation that can be caused by pathology in the His-Purkinje conduction system (HP) or ventricular myocardium. However, the current understanding of the IVCD's underlying mechanism is mostly attributed to HP structural or functional alterations. The involvement of the working ventricular myocardium is only marginally mentioned or not considered. This opinion paper is focused on the alterations of the ventricular working myocardium leading to the most frequent IVCD pattern-the left bundle branch block pattern (LBBB). Recognizing the underlying mechanisms of the LBBB patterns and the involvement of the ventricular working myocardium is of utmost clinical importance, considering a patient's prognosis and indication for cardiac resynchronization therapy.
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Petersen A, Nagel SN, Hamm B, Elgeti T, Schaafs LA. Cardiac magnetic resonance imaging in patients with left bundle branch block: Patterns of dyssynchrony and implications for late gadolinium enhancement imaging. Front Cardiovasc Med 2022; 9:977414. [PMID: 36337885 PMCID: PMC9631472 DOI: 10.3389/fcvm.2022.977414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 09/30/2022] [Indexed: 11/16/2022] Open
Abstract
Background Left bundle branch block (LBBB) is a ventricular conduction delay with high prevalence. Aim of our study is to identify possible recurring patterns of artefacts in late gadolinium enhancement (LGE) imaging in patients with LBBB who undergo cardiac magnetic resonance imaging (MRI) and to define parameters of mechanical dyssynchrony associated with artefacts in LGE images. Materials and methods Fifty-five patients with LBBB and 62 controls were retrospectively included. Inversion time (TI) scout and LGE images were reviewed for artefacts. Dyssynchrony was identified using cardiac MRI by determining left ventricular systolic dyssynchrony indices (global, septal segments, and free wall segments) derived from strain analysis and features of mechanical dyssynchrony (apical rocking and septal flash). Results Thirty-seven patients (67%) with LBBB exhibited inhomogeneous myocardial nulling in TI scout images. Among them 25 (68%) patients also showed recurring artefact patterns in the septum or free wall on LGE images and artefacts also persisted in 18 (72%) of those cases when utilising phase sensitive inversion recovery. Only the systolic dyssynchrony index of septal segments allowed differentiation of patient subgroups (artefact/no artefact) and healthy controls (given as median, median ± interquartile range); LBBB with artefact: 10.44% (0.44–20.44%); LBBB without artefact: 6.82% (-2.18–15.83%); controls: 4.38% (1.38–7.38%); p < 0.05 with an area under the curve of 0.863 (81% sensitivity, 89% specificity). Septal flash and apical rocking were more frequent in the LBBB with artefact group than in the LBBB without artefact group (70 and 62% versus 33 and 17%; p < 0.05). Conclusion Patients with LBBB show recurring artefact patterns in LGE imaging. Use of strain analysis and evaluation of mechanical dyssynchrony may predict the occurrence of such artefacts already during the examination and counteract misinterpretation.
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Peng ML, Fu Y, Zhang Y, Wu CW, Ren H, Zhou SS. Recovery of complete left bundle branch block in a dilated cardiomyopathy patient after treatment with sacubitril/valsartan: A case report. Medicine (Baltimore) 2022; 101:e29330. [PMID: 35801756 PMCID: PMC9259124 DOI: 10.1097/md.0000000000029330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
RATIONALE The treatment of dilated cardiomyopathy (DCM) has recently been greatly improved, especially with the widespread use of sacubitril/valsartan (ARNI) combination therapy. We know that ARNI-like drugs can significantly improve the symptoms of heart failure with reducing ejection fraction. However, clinical studies evaluating the safety and efficacy of ARNI in DCM-associated arrhythmia are limited, and whether individuals with arrhythmia would benefit from ARNI remains controversial. In this case, we report a patient with complete left bundle branch block (CLBBB) associated with DCM whose CLBBB returned to normal after treatment with ARNI. PATIENT CONCERNS A 38-year-old man was admitted to the hospital for 20 days for idiopathic paroxysmal dyspnea. He presented with exacerbated dyspnea symptoms at night, accompanied by cough and sputum. DIAGNOSIS Physical examination revealed a grade 4/6 systolic murmur could be heard in the apical area of the heart and mild edema was present in both lower limbs. Laboratory examination found that the B-type natriuretic peptide was significantly increased. Echocardiography indicated left atrial internal diameter, right ventricular internal diameter, and left ventricular diastolic diameter were enlarged and ejection fraction was significantly decreased. Besides, the pulsation of the wall was diffusely attenuated. Electrocardiogram was suggestive of tachycardia and CLBBB. A diagnosis of DCM with CLBBB was considered based on a comprehensive evaluation of the physical examination, laboratory examination, echocardiography and electrocardiogram. INTERVENTIONS The patient was treated with ARNI at a dose of 50 mg (twice a day) at first, gradually increasing to the target dose (200 mg, twice a day) in the following 9 months as shown in Table 1, along with metoprolol 25 mg (once a day [qd]), diuretics 20 mg (qd), and aldosterone 20 mg (qd). OUTCOMES After treatment with ARNI during the 9-month follow-up, the patient's symptoms improved, and CLBBB returned to normal. LESSONS Clinical studies evaluating the safety and efficacy of ARNI in DCM-associated arrhythmia are limited, and whether individuals with arrhythmia would benefit from ARNI remains controversial. This report will help to instruct the clinical treatment of DCM patients with CLBBB and the potential application of ARNI.
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Affiliation(s)
- Meng-Ling Peng
- Department of Cardiology, The First Hospital of Jilin University, Chaoyang District, Changchun, People’s Republic of China
| | - Yu Fu
- Department of Cardiology, The First Hospital of Jilin University, Chaoyang District, Changchun, People’s Republic of China
| | - Ying Zhang
- Department of Cardiology, The First Hospital of Jilin University, Chaoyang District, Changchun, People’s Republic of China
| | - Chu-Wen Wu
- Department of Cardiology, The First Hospital of Jilin University, Chaoyang District, Changchun, People’s Republic of China
| | - Hang Ren
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, People’s Republic of China
| | - Shan-Shan Zhou
- Department of Cardiology, The First Hospital of Jilin University, Chaoyang District, Changchun, People’s Republic of China
- *Correspondence: Shan-Shan Zhou, The First Hospital of Jilin University, No. 1 Xinmin Street, Chaoyang District, Changchun 130021, People’s Republic of China (e-mail: )
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11
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Zhang FT, Liu XJ, Zhao DQ, Wu JT, Zhang LM, Hu J, Fan XW, Yang HT, Yan LJ, Liu JJ, Wang SL. Association between complete right bundle branch block and atrial fibrillation development. Ann Noninvasive Electrocardiol 2022; 27:e12966. [PMID: 35567783 PMCID: PMC9296786 DOI: 10.1111/anec.12966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/15/2022] [Accepted: 04/21/2022] [Indexed: 12/04/2022] Open
Abstract
Background Complete right bundle branch block (CRBBB) is an important predictor of atrial fibrillation (AF) recurrence after pulmonary vein isolation. However, the association between CRBBB and AF development remains unclear. Methods We performed a retrospective study of 2639 patients (male, n = 1549; female, n = 1090; mean age, 58 ± 13 years). CRBBB was defined as a late R (R′) wave in lead V1 or V2 with a slurred S wave in lead I and/or lead V6 with a prolonged QRS duration (≥120 ms). Results Among the 2639 patients, CRBBB was detected in 40 patients (1.5%), and the prevalence of AF was 7.4% (196/2639). The proportion of patients with AF and CRBBB was higher than the proportion of patients with AF without CRBBB (22.5% vs. 7.2%; p = 0.001). In the forward multivariate logistic analysis, CRBBB (odds ratio [OR], 3.329; 95% confidence interval [CI], 1.350–8.211; p = 0.009), complete left bundle branch block (OR, 2.209; 95% CI, 1.238–3.940; p = 0.007), age (OR, 1.020; 95% CI, 1.005–1.035; p = 0.009), valvular heart disease (OR, 2.332; 95% CI, 1.531–3.552; p < 0.001), left atrial diameter (OR, 1.133; 95% CI, 1.104–1.163; p < 0.001), left ventricular ejection fraction (OR, 1.023; 95% CI, 1.006–1.041; p = 0.007), and class I or III anti‐arrhythmic drug use (OR, 10.534; 95% CI, 7.090–15.651; p < 0.001) were associated with AF. Conclusion Complete right bundle branch block was significantly associated with AF development in hospitalized patients with cardiovascular diseases.
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Affiliation(s)
- Fu-Tao Zhang
- Department of Cardiology, Henan University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, China
| | - Xiao-Jie Liu
- Department of Cardiology, Henan University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, China
| | - Dan-Qing Zhao
- Department of Cardiology, Henan University People's Hospital, Henan Provincial People's Hospital, Zhengzhou, China
| | - Jin-Tao Wu
- Heart Centre of Henan Provincial People's Hospital, Central China Fuwai Hospital, Central China Fuwai Hospital of Zhengzhou University, Zhengzhou, China
| | - Lei-Ming Zhang
- Heart Centre of Henan Provincial People's Hospital, Central China Fuwai Hospital, Central China Fuwai Hospital of Zhengzhou University, Zhengzhou, China
| | - Juan Hu
- Heart Centre of Henan Provincial People's Hospital, Central China Fuwai Hospital, Central China Fuwai Hospital of Zhengzhou University, Zhengzhou, China
| | - Xian-Wei Fan
- Heart Centre of Henan Provincial People's Hospital, Central China Fuwai Hospital, Central China Fuwai Hospital of Zhengzhou University, Zhengzhou, China
| | - Hai-Tao Yang
- Heart Centre of Henan Provincial People's Hospital, Central China Fuwai Hospital, Central China Fuwai Hospital of Zhengzhou University, Zhengzhou, China
| | - Li-Jie Yan
- Heart Centre of Henan Provincial People's Hospital, Central China Fuwai Hospital, Central China Fuwai Hospital of Zhengzhou University, Zhengzhou, China
| | - Jing-Jing Liu
- Heart Centre of Henan Provincial People's Hospital, Central China Fuwai Hospital, Central China Fuwai Hospital of Zhengzhou University, Zhengzhou, China
| | - Shan-Ling Wang
- Heart Centre of Henan Provincial People's Hospital, Central China Fuwai Hospital, Central China Fuwai Hospital of Zhengzhou University, Zhengzhou, China
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12
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Antoni L, Bruoth E, Bugata P, Bugata P, Gajdos D, Horvat S, Hudak D, Kmecova V, Stana R, Stankova M, Szabari A, Vozarikova G. Automatic ECG classification and label quality in training data. Physiol Meas 2022; 43. [PMID: 35453131 DOI: 10.1088/1361-6579/ac69a8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 04/22/2022] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Within the PhysioNet/Computing in Cardiology Challenge 2021, we focused on the design of a machine learning algorithm to identify cardiac abnormalities from electrocardiogram recordings (ECGs) with a various number of leads and to assess the diagnostic potential of reduced-lead ECGs compared to standard 12-lead ECGs. APPROACH In our solution, we developed a model based on a deep convolutional neural network, which is a 1D variant of the popular ResNet50 network. This base model was pre-trained on a large training set with our proposed mapping of original labels to SNOMED codes, using three-valued labels. In the next phase, the model was fine-tuned for the Challenge metric and conditions. MAIN RESULTS In the Challenge, our proposed approach (team CeZIS) achieved a Challenge test score of 0.52 for all lead configurations, placing us 5th out of 39 in the official ranking. Our improved post-Challenge solution was evaluated as the best for all ranked configurations, i.e., for 12-lead, 3-lead, and 2-lead versions of the full test set with the Challenge test score of 0.62, 0.61, and 0.59, respectively. SIGNIFICANCE In addition to building the model for identifying cardiac anomalies, we provide a more detailed description of the issues associated with label mapping and propose its modification in order to obtain a better starting point for training more powerful classification models. We compare the performance of models for different numbers of leads and identify labels for which two leads are sufficient. Moreover, we evaluate the label quality in individual parts of the Challenge training set.
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Affiliation(s)
- Lubomir Antoni
- Institute of Computer Science, Pavol Jozef Šafárik University in Košice Faculty of Science, Jesenna 5, Kosice, 04001, SLOVAKIA
| | - Erik Bruoth
- Institute of Computer Science, Pavol Jozef Šafárik University in Košice Faculty of Science, Jesenna 5, Kosice, 04001, SLOVAKIA
| | - Peter Bugata
- Data Science Laboratory, VSL Software, a.s., Lomena 8, Kosice, 04001, SLOVAKIA
| | - Peter Bugata
- Data Science Laboratory, VSL Software, a.s., Lomena 8, Kosice, 04001, SLOVAKIA
| | - David Gajdos
- Data Science Laboratory, VSL Software, a.s., Lomena 8, Kosice, 04001, SLOVAKIA
| | - Simon Horvat
- Institute of Computer Science, Pavol Jozef Šafárik University in Košice Faculty of Science, Jesenna 5, Kosice, 04001, SLOVAKIA
| | - David Hudak
- Data Science Laboratory, VSL Software, a.s., Lomena 8, Kosice, 04001, SLOVAKIA
| | - Vladimira Kmecova
- Data Science Laboratory, VSL Software, a.s., Lomena 8, Kosice, 04001, SLOVAKIA
| | - Richard Stana
- Institute of Computer Science, Pavol Jozef Šafárik University in Košice Faculty of Science, Jesenna 5, Kosice, 04001, SLOVAKIA
| | - Monika Stankova
- Data Science Laboratory, VSL Software, a.s., Lomena 8, Kosice, 04001, SLOVAKIA
| | - Alexander Szabari
- Institute of Computer Science, Pavol Jozef Šafárik University in Košice Faculty of Science, Jesenna 5, Kosice, 04001, SLOVAKIA
| | - Gabriela Vozarikova
- Institute of Computer Science, Pavol Jozef Šafárik University in Košice Faculty of Science, Jesenna 5, Kosice, 04001, SLOVAKIA
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13
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Left Bundle Branch Block: Characterization, Definitions, and Recent Insights into Conduction System Physiology. Card Electrophysiol Clin 2021; 13:671-684. [PMID: 34689894 DOI: 10.1016/j.ccep.2021.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Left bundle branch block (LBBB) is not just a simple electrocardiogram alteration. The intricacies of this general terminology go beyond simple conduction block. This review puts together current knowledge on the historical concept of LBBB, clinical significance, and recent insights into the pathophysiology of human LBBB. LBBB is an entity that affects patient diagnosis (primary conduction disease, secondary to underlying pathology or iatrogenic), treatment (cardiac resynchronization therapy or conduction system pacing for heart failure), and prognosis. Recruiting the left bundle branch with conduction system pacing depends on the complex interaction between anatomy, site of pathophysiology, and delivery tools.
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14
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Saad SM, Polani FS, LeLorier P. A Case of Intermittent Left Bundle Branch Block. Cureus 2021; 13:e15851. [PMID: 34189004 PMCID: PMC8232976 DOI: 10.7759/cureus.15851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
An 82-year-old woman with uncontrolled hypertension and occasional exertional dyspnea was found to be in intermittent left bundle branch block (LBBB). Her laboratory results, echocardiogram, and ischemic workup were unremarkable. This case highlights that intermittent LBBB is not always associated with coronary ischemia, vasospasm, blunt cardiac injury, drugs, and high catecholaminergic or inflammatory states.
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Affiliation(s)
- Syed M Saad
- Cardiology, Louisiana State University Health Sciences Center, New Orleans, USA
| | - Faran S Polani
- Hematology and Oncology, Washington University School of Medicine, Saint Louis, USA
| | - Paul LeLorier
- Cardiology, Louisiana State University Health Sciences Center, New Orleans, USA
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15
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Kohli U, Sriram CS, Nayak HM. Isolated left bundle branch block in the young: case reports and review of literature. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2021; 44:1466-1473. [PMID: 33835496 DOI: 10.1111/pace.14243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/14/2021] [Accepted: 04/04/2021] [Indexed: 12/01/2022]
Abstract
Isolated left bundle branch block (LBBB) aberrancy is exceedingly rare in the young and its clinical and genetic determinants remain poorly characterized. Furthermore, there is conflicting data on its natural history in the pediatric age group patients. We report the rare phenotype of isolated typical LBBB aberrancy in two healthy children, one of whom carried a likely pathogenic mutation in the coding exon 1 of NKX2-5 (p.Q22R, c.65A > G, rs201442000). Our findings suggest that isolated LBBB aberrancy could be non-progressive in some children, at least in the short term. However, given the paucity of data on this entity, we recommend continued long-term surveillance.
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Affiliation(s)
- Utkarsh Kohli
- Section of Pediatric Cardiology, Department of Pediatrics, Comer Children's Hospital and the Pritzker School of Medicine of the University of Chicago, Chicago, Illinois, USA.,Section of Pediatric Cardiology, Department of Pediatrics, West Virginia University School of Medicine, Morgantown, West Virginia, USA
| | - Chenni S Sriram
- Division of Pediatric Cardiology, Department of Pediatrics, Children's Hospital of Michigan, Central Michigan University, Detroit, Michigan, USA
| | - Hemal M Nayak
- Center for Arrhythmia Care, Heart and Vascular Center, Pritzker School of Medicine of the University of Chicago, Chicago, Illinois, USA
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16
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Kalil MAB, Donis KC, Poswar FDO, Dos Santos BB, Santos ÂBS, Schwartz IVD. Cardiovascular findings in classic homocystinuria. Mol Genet Metab Rep 2020; 25:100693. [PMID: 33335839 PMCID: PMC7734301 DOI: 10.1016/j.ymgmr.2020.100693] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 11/26/2020] [Accepted: 11/27/2020] [Indexed: 01/21/2023] Open
Abstract
Objective describe cardiovascular findings from echocardiograms and electrocardiograms in patients with Classic Homocystinuria. Methods this retrospective exploratory study evaluated fourteen subjects with Classic Homocystinuria (median age = 27.3 years; male n = 8, B6-non-responsive n = 9 patients), recruited by convenience sampling from patients seen Hospital de Clínicas de Porto Alegre (Brazil), between January 1997 and July 2020. Data on clinical findings, echocardiogram and electrocardiogram were retrieved from medical records. Results Eight patients presented some abnormalities on echocardiogram (n = 6) or electrocardiogram (n = 5). The most frequent finding was mild tricuspid regurgitation (n = 3), followed by mitral valve prolapse, mild mitral regurgitation, enlarged left atrium and aortic valve sclerosis (n = 2 patients each). Aortic root ectasia was found in one patient. Venous thrombosis was reported in six patients: deep vein thrombosis of lower limbs (n = 3), ischaemic stroke (n = 1), cerebral venous sinus thrombosis (n = 1) and pulmonary vein thrombosis (n = 1). Conclusion mild valvulopathies seen to be common in patients with Classic Homocystinuria, but more studies regarding echocardiogram and electrocardiogram in this population are needed to draw absolute conclusions.
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Affiliation(s)
| | - Karina Carvalho Donis
- Medical Genetics Service, Hospital de Clínicas de Porto Alegre, RS, Brazil.,Post graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul, RS, Brazil
| | | | - Bruna Bento Dos Santos
- Post graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul, RS, Brazil
| | - Ângela Barreto Santiago Santos
- Post graduate Program in Cardiology, Universidade Federal do Rio Grande do Sul, RS, Brazil.,Cardiology Service, Hospital de Clínicas de Porto Alegre, RS, Brazil
| | - Ida Vanessa Doederlein Schwartz
- Medical Genetics Service, Hospital de Clínicas de Porto Alegre, RS, Brazil.,Post graduate Program in Genetics and Molecular Biology, Universidade Federal do Rio Grande do Sul, RS, Brazil
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17
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Haseeb S, Gul EE. Rate‐dependent aberrancy and cardiac resynchronization therapy. Pacing Clin Electrophysiol 2020; 43:1210-1212. [DOI: 10.1111/pace.14039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 07/20/2020] [Accepted: 08/09/2020] [Indexed: 11/30/2022]
Affiliation(s)
- Sohaib Haseeb
- College of Medicine and Dentistry James Cook University Townsville Queensland Australia
| | - Enes Elvin Gul
- Division of Cardiac Electrophysiology Madinah Cardiac Centre Madinah Saudi Arabia
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18
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Masson R, Bakhshi H, Haddad TM. Intermittent left bundle branch block and acute heart failure in trastuzumab-induced cardiotoxicity. BMJ Case Rep 2020; 13:13/7/e236009. [PMID: 32723779 DOI: 10.1136/bcr-2020-236009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
A 70-year-old woman with HER2+/ER+ breast cancer on adjuvant trastuzumab therapy without a history of cardiovascular disease presented with respiratory failure from influenza and was found to have intermittent left bundle branch block (LBBB) with new onset systolic heart failure. Her course was complicated by polymorphic ventricular tachycardia and recurrent chest pain. Significant investigations included a normal cardiac MRI and cardiac catheterisation with unobstructed coronaries. It was determined that the aetiology of her heart failure was trastuzumab-induced cardiotoxicity after comprehensive workup. This case highlights an uncommon presentation of LBBB and the steps taken to diagnose a rare cardiomyopathy.
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Affiliation(s)
- Ravi Masson
- Department of Internal Medicine, MedStar Georgetown University Hospital, Washington, District of Columbia, USA
| | - Hooman Bakhshi
- Department of Cardiology, Inova Heart and Vascular Institute, Falls Church, Virginia, USA
| | - Tariq M Haddad
- Department of Cardiology, Inova Heart and Vascular Institute, Falls Church, Virginia, USA.,Department of Cardiology, Virginia Heart, Falls Church, Virginia, USA
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19
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Chan YH, Ngai MC, Chen Y, Wu MZ, Yu YJ, Zhen Z, Lai K, Cheung T, Ho LM, Chung HY, Lau CS, Lau CP, Tse HF, Yiu KH. Osteogenic circulating endothelial progenitor cells are linked to electrocardiographic conduction abnormalities in rheumatic patients. Ann Noninvasive Electrocardiol 2019; 24:e12651. [PMID: 31017736 DOI: 10.1111/anec.12651] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 03/02/2019] [Accepted: 03/06/2019] [Indexed: 01/24/2023] Open
Abstract
BACKGROUND Osteogenic circulating endothelial progenitor cells (EPC) play a pathogenic role in cardiovascular system degeneration through promulgating vasculature calcification, but its role in conduction disorders as part of the cardiovascular degenerative continuum remained unknown. AIM To investigate the role of osteocalcin (OCN)-expressing circulating EPCs in cardiac conduction disorders in the unique clinical sample of rheumatoid arthritis (RA) susceptible to both abnormal bone metabolism and cardiac conduction disorders. METHODS We performed flow cytometry studies in 134 consecutive asymptomatic patients with rheumatoid arthritis to derive osteogenic circulating OCN-positive (OCN+) CD34+KDR+ vs. CD34+CD133+KDR+ conventional EPC. Study endpoint was the prespecified combined endpoint of electrocardiographic conduction abnormalities. RESULTS Total prevalence of cardiac conduction abnormality was 9% (n = 12). All patients except one had normal sinus rhythm. One patient had atrial fibrillation. No patient had advanced atrioventricular (AV) block. Prevalence of first-degree heart block (>200 ms), widened QRS duration (>120 ms) and right bundle branch block were 6.7%, 2.1%, and 2.2% respectively. Circulating osteogenic OCN+ CD34+ KDR+ EPCs were significantly higher among patients with cardiac conduction abnormalities (p = 0.039). Elevated OCN+ CD34+ KDR+ EPCs> 75th percentile was associated with higher prevalence of cardiac conduction abnormalities (58.3% vs. 20.02%, p = 0.003). Adjusted for potential confounders, elevated OCN+ CD34+ KDR+ EPCs> 75th percentile remained independently associated with increased risk of cardiac conduction abnormalities (OR = 4.4 [95%CI 1.2-16.4], p = 0.028). No significant relation was found between conventional EPCs CD34+CD133+KDR+ and conduction abnormalities (p = 0.36). CONCLUSIONS Elevated osteogenic OCN+ CD34+ KDR+ EPCs are independently associated with the presence of electrocardiographic conduction abnormalities in patients with rheumatoid arthritis, unveiling a potential novel pathophysiological mechanism.
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Affiliation(s)
- Yap-Hang Chan
- Cardiology Division, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Michael Cheong Ngai
- Cardiology Division, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Yan Chen
- Cardiology Division, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China.,Cardiology Division, Department of Medicine, University of Hong Kong Shenzhen Hospital, Shenzhen, China
| | - Mei-Zhen Wu
- Cardiology Division, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Yu-Juan Yu
- Cardiology Division, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Zhe Zhen
- Cardiology Division, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Kevin Lai
- Cardiology Division, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Tommy Cheung
- Division of Rheumatology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Lai-Ming Ho
- School of Public Health, The University of Hong Kong, Hong Kong, China
| | - Ho-Yin Chung
- Division of Rheumatology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Chak-Sing Lau
- Division of Rheumatology, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Chu-Pak Lau
- Cardiology Division, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China
| | - Hung-Fat Tse
- Cardiology Division, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China.,Cardiology Division, Department of Medicine, University of Hong Kong Shenzhen Hospital, Shenzhen, China
| | - Kai-Hang Yiu
- Cardiology Division, Department of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong SAR, China.,Cardiology Division, Department of Medicine, University of Hong Kong Shenzhen Hospital, Shenzhen, China
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20
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Pérez-Riera AR, Barbosa-Barros R, Daminello-Raimundo R, de Abreu LC, de Almeida MC, Rankinen J, Baeub Soler F, Nikus K. Re-evaluating the electro-vectorcardiographic criteria for left bundle branch block. Ann Noninvasive Electrocardiol 2019; 24:e12644. [PMID: 30938470 DOI: 10.1111/anec.12644] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 01/03/2019] [Accepted: 01/23/2019] [Indexed: 11/26/2022] Open
Abstract
The criteria for left bundle branch block have gained growing interest in the last few years. In this overview, we discuss diagnostic and prognostic aspects of different criteria. It was already shown that stricter criteria, including longer QRS duration and slurring/notching of the QRS, better identify responders to cardiac resynchronization therapy. We also include aspects of ST/T concordance and discordance and vectorcardiography, which could further improve in the fine-tuning of the left bundle branch criteria.
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Affiliation(s)
| | - Raimundo Barbosa-Barros
- Coronary Center, de Messejana Hospital Dr. Carlos Alberto Studart Gomes, Fortaleza, Ceará, Brazil
| | | | - Luiz Carlos de Abreu
- Study Design and Scientific Writing Laboratory, ABC Faculty of Medicine, Santo André, São Paulo, Brazil
| | - Marcos Célio de Almeida
- IInstitute of Biology-Genetics and Morphology, University of Brasília, Brasília, Federal District, Brazil
| | - Jani Rankinen
- Heart Center, Tampere University Hospital and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | | | - Kjell Nikus
- Heart Center, Tampere University Hospital and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
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21
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Pérez-Riera AR, Barbosa-Barros R, de Rezende Barbosa MPC, Daminello-Raimundo R, de Abreu LC, Nikus K. Left bundle branch block: Epidemiology, etiology, anatomic features, electrovectorcardiography, and classification proposal. Ann Noninvasive Electrocardiol 2018; 24:e12572. [PMID: 29932265 DOI: 10.1111/anec.12572] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 04/28/2018] [Accepted: 05/14/2018] [Indexed: 01/25/2023] Open
Abstract
In left bundle branch block (LBBB), the ventricles are activated in a sequential manner with alterations in left ventricular mechanics, perfusion, and workload resulting in cardiac remodeling. Underlying molecular, cellular, and interstitial changes manifest clinically as changes in size, mass, geometry, and function of the heart. Cardiac remodeling is associated with progressive ventricular dysfunction, arrhythmias, and impaired prognosis. Clinical and diagnostic notions about LBBB have evolved from a simple electrocardiographic alteration to a critically important finding affecting diagnostic and clinical management of many patients. Advances in cardiac magnetic resonance imaging have significantly improved the assessment of patients with LBBB and provided additional insights into pathophysiological mechanisms of left ventricular remodeling. In this review, we will discuss the epidemiology, etiologies, and electrovectorcardiographic features of LBBB and propose a classification of the conduction disturbance.
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Affiliation(s)
- Andrés R Pérez-Riera
- Design of Studies and Scientific Writing Laboratory, ABC School of Medicine, São Paulo, Brazil
| | - Raimundo Barbosa-Barros
- Coronary Center, Messejana Hospital Dr. Carlos Alberto Studart Gomes, Fortaleza, Ceará, Brazil
| | | | | | - Luiz C de Abreu
- Design of Studies and Scientific Writing Laboratory, ABC School of Medicine, São Paulo, Brazil
| | - Kjell Nikus
- Heart Center, Tampere University Hospital and Faculty of Medicine and Life Sciences, University of Tampere, Finland
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