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Ghannam M, Kovacs B, Liang J, Attili A, Cochet H, Latchamsetty R, Jongnarangsin K, Morady F, Bogun F. Ventricular arrhythmias in patients with bicuspid aortic valves. J Cardiovasc Electrophysiol 2024; 35:1069-1077. [PMID: 38509335 DOI: 10.1111/jce.16235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 02/08/2024] [Accepted: 02/22/2024] [Indexed: 03/22/2024]
Abstract
INTRODUCTION Bicuspid aortic valves (BAV) are the most common congenital heart defects and the extent of ventricular arrhythmias (VA) in patients with BAV is unclear. The objective of this study is to describe VAs and late gadolinium enhancement cardiac magnetic resonance imaging (LGE-CMR) in patients with BAV. METHODS A total of 19 patients with BAV (18 males, age: 58 ± 13 years) were referred for VA ablation procedures. Ten patients had BAVs at the time of ablation, nine patients had prior aortic valve replacement for a BAV. All but one patient had LGE-CMR and all patients underwent programmed ventricular stimulation at the time of the ablation. RESULTS Frequent PVCs were the targeted VAs in 17/19 patients and VT in 2/19 patients. Monomorphic ventricular tachycardia (VT) was inducible in 6 patients. A total of 15 VTs were inducible (2.5 ± 1.0 VTs per patient with a mean cycle length of 322 ± 83 msec). LGE was present in 13 patients. Patients with inducible VT had larger borderzone and core scar compared to non-inducible patients (7.8 ± 2.1 cm3 vs. 2.5 ± 3.1 cm3 and 5.1 ± 2.6 cm3 vs. 1.9 ± 3.0 cm3, p-value < .05 for both). PVCs and VTs were mapped to the periaortic valve area in 12 patients and 4 patients, respectively. The PVC burden was reduced from 27 ± 13 to 3 ± 6 (p < .001) and the ejection fraction improved from 49 ± 13% to 55 ± 9% (p = .005). CONCLUSIONS VAs in patients with BAV often originate from the perivalvular area and patients often have LGE and inducible VT. LGE may be due to ventricular remodeling secondary to the presence of BAV and harbors the arrhythmogenic substrate for VT.
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Affiliation(s)
- Michael Ghannam
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Boldizsar Kovacs
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Jackson Liang
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Anil Attili
- Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Rakesh Latchamsetty
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Krit Jongnarangsin
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Fred Morady
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Frank Bogun
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
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Attachaipanich T, Thiravetyan B, Tribuddharat N, Jaroonpipatkul S, Navaravong L. Premature Ventricular Contraction-Induced Cardiomyopathy: Contemporary Evidence from Risk Stratification, Pathophysiology, and Management. J Clin Med 2024; 13:2635. [PMID: 38731164 PMCID: PMC11084868 DOI: 10.3390/jcm13092635] [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: 03/18/2024] [Revised: 04/16/2024] [Accepted: 04/27/2024] [Indexed: 05/13/2024] Open
Abstract
Premature ventricular complexes (PVCs) are commonly encountered problems in clinical settings. The range of symptoms can be from asymptomatic to palpitations, fatigue, or heart failure symptoms. A higher burden of PVCs is a risk factor for development of PVC-induced cardiomyopathy (PIC). Rhythm evaluation by 12-lead ECG and an ambulatory monitoring device are essential. Currently, several imaging modalities, such as echocardiography and cardiac magnetic resonance imaging, are utilized to evaluate the underlying structure that may be related to PIC. Beta blockers and antiarrhythmic drugs are typically part of the initial management strategy. If these fail, catheter ablation of PVCs is typically the next step. The purpose of this article is to summarize the current evidence/knowledge about PIC.
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Affiliation(s)
- Tanawat Attachaipanich
- Cardiac Electrophysiology Research and Training Center, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Ben Thiravetyan
- Department of Immunology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand;
| | | | - Surachat Jaroonpipatkul
- Division of Cardiology, Rajavithi Hospital, College of Medicine, Rangsit University, Bangkok 10400, Thailand;
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Jamé S, Liu Z, Kolias T, Liang J, Labounty T, Ghannam M, Latchamsetty R, Jongnarangsin K, Morady F, Bogun F. Strain Analysis in Patients with Frequent Premature Ventricular Complexes and Preserved Left Ventricular Function Undergoing Ablation. J Clin Med 2023; 12:jcm12083017. [PMID: 37109352 PMCID: PMC10140973 DOI: 10.3390/jcm12083017] [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: 03/09/2023] [Revised: 03/29/2023] [Accepted: 04/01/2023] [Indexed: 04/29/2023] Open
Abstract
BACKGROUND Frequent premature ventricular complexes (PVCs) can cause PVC-induced cardiomyopathy. The value of PVC ablation in patients with preserved left ventricular function in the low-normal range (ejection fraction: 50-55%) is not established. Strain analysis has been used to estimate changes in left ventricular function beyond assessment of the ejection fraction (EF). Longitudinal strain has been proposed as a method to detect changes over time in the setting of frequent asymptomatic premature ventricular complexes and preserved left ventricular (LV) function. A decrease in strain may be evidence of PVC-induced cardiomyopathy. OBJECTIVE In this study, we assessed the role of PVC ablation in patients with low-normal EF and the effect on EF and myocardial strain before and after PVC ablation. METHODS A total of 70 consecutive patients with either low-normal EF (0.5-<0.55, n = 35) or high-normal EF (≥0.55; n = 35), using available imaging and Holter data, were referred for ablation due to frequent PVCs. EF and longitudinal strain were assessed pre- and post-ablation. RESULTS There was a significant increase in EF (53.2 ± 0.4% to 58.3 ± 0.5%, p < 0.001) and improvement in longitudinal strain (-15.2 ± 3.3 to -16.6 ± 3, p = 0.007) post-ablation in patients with low-normal EF and successful ablation. There was no change in EF or longitudinal strain in patients with high-normal EF and a successful ablation pre- vs. post-ablation. CONCLUSIONS Patients with frequent PVCs and low-normal LV EF compared to patients with frequent PVCs and high-normal LV EF have evidence of PVC-induced cardiomyopathy and may benefit from ablation despite a preserved left ventricular EF.
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Affiliation(s)
- Sina Jamé
- Division of Cardiovascular Medicine, Cardiovascular Center, University of Michigan, SPC 5853, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Zhigang Liu
- Division of Cardiovascular Medicine, Cardiovascular Center, University of Michigan, SPC 5853, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Theodore Kolias
- Division of Cardiovascular Medicine, Cardiovascular Center, University of Michigan, SPC 5853, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Jackson Liang
- Division of Cardiovascular Medicine, Cardiovascular Center, University of Michigan, SPC 5853, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Troy Labounty
- Division of Cardiovascular Medicine, Cardiovascular Center, University of Michigan, SPC 5853, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Michael Ghannam
- Division of Cardiovascular Medicine, Cardiovascular Center, University of Michigan, SPC 5853, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Rakesh Latchamsetty
- Division of Cardiovascular Medicine, Cardiovascular Center, University of Michigan, SPC 5853, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Krit Jongnarangsin
- Division of Cardiovascular Medicine, Cardiovascular Center, University of Michigan, SPC 5853, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Fred Morady
- Division of Cardiovascular Medicine, Cardiovascular Center, University of Michigan, SPC 5853, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
| | - Frank Bogun
- Division of Cardiovascular Medicine, Cardiovascular Center, University of Michigan, SPC 5853, 1500 East Medical Center Drive, Ann Arbor, MI 48109, USA
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Latchamsetty R, Bogun F. Frequent premature ventricular complexes are benign!? Europace 2023; 25:251-252. [PMID: 36734238 PMCID: PMC9935012 DOI: 10.1093/europace/euac263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Affiliation(s)
- Rakesh Latchamsetty
- Section of Electrophysiology, Division of Cardiovascular Medicine,
Department of Internal Medicine, University of Michigan, 1500
E Medical Center Dr, Ann Arbor, MI 48104, USA
| | - Frank Bogun
- Corresponding author. Tel: +734 936 4000; fax: +734 615 0074.
E-mail address:
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Epicardial mapping and ablation of ventricular tachycardia in patients after coronary artery bypass surgery: don't forget the coronary venous system! J Interv Card Electrophysiol 2023; 66:153-155. [PMID: 35657536 DOI: 10.1007/s10840-022-01260-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 05/25/2022] [Indexed: 10/18/2022]
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Tam TK, Ghannam M, Liang JJ, Attili A, Cochet H, Jais P, Juhoor M, Latchamsetty R, Jongnarangsin K, Morady F, Bogun F. Intramural Mapping of Intramural Septal Ventricular Arrhythmias. J Cardiovasc Electrophysiol 2022; 33:975-981. [PMID: 35170146 PMCID: PMC9415098 DOI: 10.1111/jce.15410] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/26/2022] [Accepted: 02/02/2022] [Indexed: 11/29/2022]
Abstract
Background Intramural ventricular arrhythmias (VAs) can originate in patients with or without structural heart disease. Electrogram (EGM) recordings from intramural sources of VA have not been described thoroughly. Objective We hypothesized that the presence of scar may be linked to the site of origin (SOO) of focal, intramural VAs. Methods In a series of 21 patients (age: 55 ± 11 years, 12 women, mean ejection fraction 43 ± 14%) in whom the SOO of intramural VAs was identified, we analyzed bipolar EGM characteristics at the SOO and compared the findings with the endocardial breakout site. The patients were from a pool of 86 patients with intramural VAs referred for ablation. Results In 16/21 patients intramural scarring was detected by cardiac magnetic resonance (CMR) imaging In patients in whom the intramural SOO was reached, intramural bipolar EGMs showed a lower voltage and had broader EGMs compared to the endocardial breakout sites (0.97 ± 0.56 vs. 2.28 ± 0.15 mV, p = .001; and 122.3 ± 31.6 vs. 96.5 ± 26.3 ms, p < .01). All intramural sampled sites at the SOO had either low voltage or broad abnormal EGMs. The activation time was significantly earlier at the intramural SOO than at breakout sites (−36.2 ± 11.8 vs. −23.2 ± 9.1 ms, p < .0001). Conclusions Sites of origin of intramural VAs with scar by CMR display EGM characteristics of scarring, supporting that scar tissue localizes to the SOO of intramural outflow tract arrhythmias in some patients. Scarring identified by CMR may be helpful in planning ablation procedures in patients with suspected intramural VAs.
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Affiliation(s)
- Tsz-Kin Tam
- University of Michigan, Division of Cardiovascular Medicine
| | | | | | - Anil Attili
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA
| | - Hubert Cochet
- Bordeaux University Hospital and University of Bordeaux, Bordeaux, France.,INRIA, Sophia Antipolis, France
| | - Pierre Jais
- Bordeaux University Hospital and University of Bordeaux, Bordeaux, France.,INRIA, Sophia Antipolis, France
| | - Mehdi Juhoor
- Bordeaux University Hospital and University of Bordeaux, Bordeaux, France.,INRIA, Sophia Antipolis, France
| | | | | | - Fred Morady
- University of Michigan, Division of Cardiovascular Medicine
| | - Frank Bogun
- University of Michigan, Division of Cardiovascular Medicine
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Ghannam M, Siontis KC, Kim HM, Cochet H, Jais P, Eng MJ, Attili A, Sharaf-Dabbagh G, Latchamsetty R, Jongnarangsin K, Morady F, Bogun F. Factors predictive for delayed enhancement in cardiac resonance imaging in patients undergoing catheter ablation of premature ventricular complexes. Heart Rhythm O2 2020; 2:64-72. [PMID: 34113906 PMCID: PMC8183950 DOI: 10.1016/j.hroo.2020.11.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Background Patients undergoing ablation of premature ventricular complexes (PVCs) can have cardiac scar. Risk factors for the presence of scar are not well defined. Objectives To determine the prevalence of scarring detected by delayed enhancement cardiac magnetic resonance imaging (DE-CMR) in patients undergoing ablation of PVCs, to create a risk score predictive of scar, and to explore correlations between the scoring system and long-term outcomes. Methods DE-CMR imaging was performed in consecutive patients with frequent PVCs referred for ablation. The full sample was used to develop a prediction model for cardiac scar based on demographic and clinical characteristics, and internal validation of the prediction model was done using bootstrap samples. Results The study consisted of 333 patients (52% male, aged 53.2 ± 14.5 years, preablation ejection fraction 50.9% ± 12.2%, PVC burden 20.7 ± 13.14), of whom 112 (34%) had DE-CMR scarring. Multiple logistic regression analysis showed age (odds ratio [OR] 1.02 [1.01–1.04]/year, P = .019) and preablation ejection fraction (OR 0.92 [0.89–0.94]/%, P < .001) to be predictive of scar. A weighted risk score incorporating age and ejection fraction was used to stratify patients into low-, medium-, and high-risk groups. Scar prevalence was around 86% in the high-risk group and 12% in the low-risk group; high-risk patients had worse survival free of arrhythmia. Conclusions Cardiac scar was present in one-third of patients referred for PVC ablation. A weighted risk score based simply on patient age and preprocedural ejection fraction can help discriminate between patients at high and low risk for the presence of cardiac scar and worse arrhythmia outcomes.
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Affiliation(s)
- Michael Ghannam
- Division of Cardiovascular Medicine and Radiology, University of Michigan, Ann Arbor, Michigan
| | | | - Hyungjin Myra Kim
- Division of Cardiovascular Medicine and Radiology, University of Michigan, Ann Arbor, Michigan
| | - Hubert Cochet
- Department of Radiology and Division of Cardiology, University of Bordeaux, Bordeaux, France
| | - Pierre Jais
- Department of Radiology and Division of Cardiology, University of Bordeaux, Bordeaux, France
| | - Mehdi Juhoor Eng
- Department of Radiology and Division of Cardiology, University of Bordeaux, Bordeaux, France
| | - Anil Attili
- Division of Cardiovascular Medicine and Radiology, University of Michigan, Ann Arbor, Michigan
| | - Ghaith Sharaf-Dabbagh
- Division of Cardiovascular Medicine and Radiology, University of Michigan, Ann Arbor, Michigan
| | - Rakesh Latchamsetty
- Division of Cardiovascular Medicine and Radiology, University of Michigan, Ann Arbor, Michigan
| | - Krit Jongnarangsin
- Division of Cardiovascular Medicine and Radiology, University of Michigan, Ann Arbor, Michigan
| | - Fred Morady
- Division of Cardiovascular Medicine and Radiology, University of Michigan, Ann Arbor, Michigan
| | - Frank Bogun
- Division of Cardiovascular Medicine and Radiology, University of Michigan, Ann Arbor, Michigan
- Address reprint requests and correspondence: Dr Frank Bogun, Cardiovascular Center, SPC 5853, 1500 E. Medical Center Dr, Ann Arbor, MI 48109-5853.
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