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Yokoyama Y, Shimoda T, Shimada YJ, Shimamura J, Akita K, Yasuda R, Takayama H, Kuno T. Alcohol septal ablation versus surgical septal myectomy of obstructive hypertrophic cardiomyopathy: systematic review and meta-analysis. Eur J Cardiothorac Surg 2023; 63:7035942. [PMID: 36782361 DOI: 10.1093/ejcts/ezad043] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/26/2023] [Indexed: 02/15/2023] Open
Abstract
OBJECTIVES To elucidate the optimal septal reduction therapy for obstructive hypertrophic cardiomyopathy, we conducted a meta-analysis comparing alcohol septal ablation (ASA) and septal myectomy. METHODS MEDLINE, EMBASE and Cochrane CENTRAL were searched to identify studies investigating the outcomes of ASA and septal myectomy in patients with obstructive hypertrophic cardiomyopathy in January 2023. The primary outcome of interest was all-cause mortality in studies with ≥1 year of follow-up. The secondary outcomes of interest comprised left ventricular outflow tract (LVOT) pressure gradient reduction and reoperations of LVOT. A subgroup analysis of all-cause mortality including studies with follow-up ≥5 years was performed. RESULTS 27 observational studies were included (15 968 patients). Analysis demonstrated similar all-cause mortality [hazard ratio (HR) (95% confidence interval) (CI) 1.24 (0.88-1.76); P = 0.21; I2 = 56%]. In contrast, ASA was associated with less reduction of LVOT pressure gradient and a reoperation rate [weighted mean difference (95% CI) 11.04 mmHg (5.60-16.48); P < 0.01; I2 = 64%, HR (95% CI) 9.14 (6.55-12.75); P < 0.001; I2 = 0%, respectively]. The subgroup analysis with follow-up ≥5 years revealed higher long-term mortality with ASA [HR (95% CI) 1.50 (1.04-2.15); P = 0.03; I2 = 52%]. CONCLUSIONS Although both septal reduction therapies were associated with similar all-cause mortality, ASA was associated with a higher rate of reoperation and less reduction of LVOT pressure gradient. Furthermore, all-cause mortality with follow-up ≥5 years showed favourable outcomes with septal myectomy, although the result is only hypothesis-generating given a subgroup analysis.
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Affiliation(s)
- Yujiro Yokoyama
- Department of Surgery, St. Luke's University Health Network, Bethlehem, PA, USA
| | | | - Yuichi J Shimada
- Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Junichi Shimamura
- Department of Surgery, Division of Cardiothoracic Surgery, Emory University, Atlanta, GA, USA
| | - Keitaro Akita
- Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Risako Yasuda
- Division of Cardiology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Hiroo Takayama
- Department of Surgery, Columbia University Irving Medical Center, New York, NY, USA
| | - Toshiki Kuno
- Department of Cardiology, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, USA
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Khan AA, Fassa A, Dangas DG, Sigwart U. Alcohol Septal Ablation for Hypertrophic Obstructive Cardiomyopathy. Interv Cardiol 2022. [DOI: 10.1002/9781119697367.ch51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Hassanin A, Rzechorzek W, Naidu SS, Lanier GM. A haemodynamic conundrum: a case report of a patient with concurrent pulmonary arterial hypertension and hypertrophic obstructive cardiomyopathy. Eur Heart J Case Rep 2021; 5:ytab354. [PMID: 34557642 PMCID: PMC8453412 DOI: 10.1093/ehjcr/ytab354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/19/2021] [Accepted: 08/23/2021] [Indexed: 12/04/2022]
Abstract
Background The co-existence of hypertrophic obstructive cardiomyopathy (HOCM) and pulmonary arterial hypertension (PAH) is extremely rare and poses a management conundrum. This is the first case report in the published literature to describe the diagnosis and management of a patient with both conditions. Case summary A 49-year-old female with a history of HOCM and recently diagnosed scleroderma presented to the clinic with progressive dyspnoea. Transthoracic echocardiogram demonstrated left ventricular outflow tract (LVOT) obstruction at rest, and elevated pulmonary artery (PA) pressure. Cardiac catheterization (CC) demonstrated an LVOT gradient of 150 mmHg, PA pressure of 88/32 mmHg, pulmonary capillary wedge pressure (PCWP) 12 mmHg, pulmonary vascular resistance 14.8 Wu, and a cardiac index of 1.6 L/min/m2. The differential diagnosis for the dyspnoea included combined pre- and post-capillary pulmonary hypertension from longstanding HOCM vs. scleroderma associated PAH. Tadalafil was added to the patient’s medical regimen of metoprolol but it was stopped because the patient developed pulmonary oedema. Alcohol septal ablation was undertaken with improvement in the LVOT gradient, but only a modest improvement in her dyspnoea. Repeat CC demonstrated worsening PAH. Vasodilatory testing with nitric oxide led to an improvement in the PA pressure with minimal increase of the PCWP. Hence, she was started on treprostinil and macitentan, with significant improvement in her dyspnoea on follow-up. Conclusion In patients with concurrent HOCM and advanced PAH, a multidisciplinary treatment approach is needed to rapidly and safely optimize the background of HOCM in order to permit the use of PAH-specific medications.
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Affiliation(s)
- Ahmed Hassanin
- Westchester Medical Center, New York Medical College, 100 Woods Road, Valhalla, NY 10595, USA
| | - Wojciech Rzechorzek
- Westchester Medical Center, New York Medical College, 100 Woods Road, Valhalla, NY 10595, USA
| | - Srihari S Naidu
- Westchester Medical Center, New York Medical College, 100 Woods Road, Valhalla, NY 10595, USA
| | - Gregg M Lanier
- Westchester Medical Center, New York Medical College, 100 Woods Road, Valhalla, NY 10595, USA
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Douglas JS. Current state of the roles of alcohol septal ablation and surgical myectomy in the treatment of hypertrophic obstructive cardiomyopathy. Cardiovasc Diagn Ther 2020; 10:36-44. [PMID: 32175226 DOI: 10.21037/cdt.2019.07.02] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Hypertrophic cardiomyopathy is a genetically determined disorder resulting in left ventricular hypertrophy. In a majority of the estimated 20 million people affected worldwide, left ventricular outflow obstruction is present at rest or with provocation. The presence and degree of obstruction influence the symptomatic presentation, treatment strategies and prognosis of affected individuals. Pharmacologic therapy with beta-adrenergic blocking drugs and calcium channel blockers is the principal treatment strategy in symptomatic patients with left ventricular outflow obstruction but is ineffective in many patients. When symptoms of exertional shortness of breath, chest pain and/or syncope prove refractory to medical therapy and there is persisting left ventricular outflow obstruction, or when there is drug intolerance, septal reduction strategies (surgical myectomy and alcohol septal ablation) are quite effective. Selection of the optimal septal reduction strategy for a given patient has become controversial and is determined largely by the medical system providing treatment strategies for the patient. Regretably, there are no randomized trials comparing myectomy and ablation and none are anticipated. The comprehensive Hypertrophic Cardiomyopathy Guideline Statements published in 2011 and 2014 differ significantly with the earlier statement favoring surgical myectomy and the more recent statement giving equal class I status to the two septal reduction strategies in adult patients with drug-refractory symptoms. Recently published studies of long-term follow-up of patients after alcohol septal ablation in Europe, where surgical myectomy is rarely performed, confirm long-term safety and effectiveness with survival free of cardiac events exceeding 96% at 15 years. The lesser degree of discomfort and more rapid recovery associated with the minimally invasive catheter-based alcohol ablation procedure coupled with the recently published long-term safety data favor an increased use of this strategy in symptomatic adult patients with hypertrophic obstructive cardiomyopathy (HOCM).
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Affiliation(s)
- John S Douglas
- Division of Cardiology, Emory University School of Medicine, Emory University Hospital, Atlanta, Georgia, USA
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Aguiar Rosa S, Fiarresga A, Galrinho A, Cacela D, Ramos R, de Sousa L, Gonçalves A, Bernardes L, Patrício L, Branco LM, Ferreira RC. Short- and long-term outcome after alcohol septal ablation in obstructive hypertrophic cardiomyopathy: Experience of a reference center. Rev Port Cardiol 2019; 38:473-480. [PMID: 31495717 DOI: 10.1016/j.repc.2019.08.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2018] [Accepted: 12/09/2018] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION In obstructive hypertrophic cardiomyopathy (HCM), alcohol septal ablation (ASA) can lead to gradient reduction and symptom improvement. We aimed to assess the efficacy and safety of ASA in a long-term outcome study. METHODS We analyzed patients who underwent ASA over a seven-year period in a tertiary center. The primary echocardiographic endpoint was >50% reduction in left ventricular outflow tract (LVOT) gradient within a year of the procedure. The primary clinical endpoints were improvement in functional capacity and a combined endpoint of cardiac death and rehospitalization for cardiac cause. The follow-up period was 4.17±2.13 years. RESULTS A total of 80 patients, mean age 63.9±12.3 years, 30.0% male, were analyzed. Baseline LVOT gradient was 96.3±34.6 mmHg and interventricular septal thickness was 21.6±3.1 mm. Minor complications were observed in 6.3% and major complications in 2.5%, and 8.8% received a permanent pacemaker. The primary echocardiographic endpoint was achieved by 85.7%. At three-month follow-up, LVOT gradient was 25.8±26.0 mmHg in the successful procedure group, compared to 69.2±35.6 mmHg in the other patients (p=0.001). At six months, LVOT gradient was 27.1±27.4 vs. 58.2±16.6 mmHg (p=0.024). Among 74 patients in NYHA class III/IV before the procedure, 57 (77%) improved to NHYA class I/II. The combined primary clinical endpoint (cardiac death and rehospitalization for cardiac cause) was observed in 27.5% (n=22). In the unsuccessful group, the combined endpoint was observed in 54.5%, compared to only 22.7% in the successful group. Only two patients died of cardiac causes. CONCLUSION ASA is a safe procedure with a high success rate. Patients who achieved significant reductions in LVOT gradient suffered less cardiac death and rehospitalization for cardiac cause.
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Affiliation(s)
- Sílvia Aguiar Rosa
- Department of Cardiology, Santa Marta Hospital, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal.
| | - António Fiarresga
- Department of Cardiology, Santa Marta Hospital, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal
| | - Ana Galrinho
- Department of Cardiology, Santa Marta Hospital, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal
| | - Duarte Cacela
- Department of Cardiology, Santa Marta Hospital, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal
| | - Ruben Ramos
- Department of Cardiology, Santa Marta Hospital, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal
| | - Lídia de Sousa
- Department of Cardiology, Santa Marta Hospital, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal
| | - António Gonçalves
- Department of Cardiology, Santa Marta Hospital, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal
| | - Luís Bernardes
- Department of Cardiology, Santa Marta Hospital, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal
| | - Lino Patrício
- Department of Cardiology, Santa Marta Hospital, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal
| | - Luísa Moura Branco
- Department of Cardiology, Santa Marta Hospital, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal
| | - Rui Cruz Ferreira
- Department of Cardiology, Santa Marta Hospital, Centro Hospitalar de Lisboa Central, EPE, Lisbon, Portugal
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Aguiar Rosa S, Fiarresga A, Galrinho A, Cacela D, Ramos R, de Sousa L, Gonçalves A, Bernardes L, Patrício L, Branco LM, Ferreira RC. Short- and long-term outcome after alcohol septal ablation in obstructive hypertrophic cardiomyopathy: Experience of a reference center. REVISTA PORTUGUESA DE CARDIOLOGIA (ENGLISH EDITION) 2019. [DOI: 10.1016/j.repce.2018.12.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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7
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Popa-Fotea NM, Micheu MM, Bataila V, Scafa-Udriste A, Dorobantu L, Scarlatescu AI, Zamfir D, Stoian M, Onciul S, Dorobantu M. Exploring the Continuum of Hypertrophic Cardiomyopathy-From DNA to Clinical Expression. ACTA ACUST UNITED AC 2019; 55:medicina55060299. [PMID: 31234582 PMCID: PMC6630598 DOI: 10.3390/medicina55060299] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 06/20/2019] [Accepted: 06/20/2019] [Indexed: 12/29/2022]
Abstract
The concepts underlying hypertrophic cardiomyopathy (HCM) pathogenesis have evolved greatly over the last 60 years since the pioneering work of the British pathologist Donald Teare, presenting the autopsy findings of “asymmetric hypertrophy of the heart in young adults”. Advances in human genome analysis and cardiac imaging techniques have enriched our understanding of the complex architecture of the malady and shaped the way we perceive the illness continuum. Presently, HCM is acknowledged as “a disease of the sarcomere”, where the relationship between genotype and phenotype is not straightforward but subject to various genetic and nongenetic influences. The focus of this review is to discuss key aspects related to molecular mechanisms and imaging aspects that have prompted genotype–phenotype correlations, which will hopefully empower patient-tailored health interventions.
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Affiliation(s)
- Nicoleta Monica Popa-Fotea
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, Floreasca Street 8, 014461 Bucharest, Romania.
| | - Miruna Mihaela Micheu
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, Floreasca Street 8, 014461 Bucharest, Romania.
| | - Vlad Bataila
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, Floreasca Street 8, 014461 Bucharest, Romania.
| | - Alexandru Scafa-Udriste
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, Floreasca Street 8, 014461 Bucharest, Romania.
- Department 4-Cardiothoracic Pathology, University of Medicine and Pharmacy Carol Davila, Eroii Sanitari Bvd. 8, 050474 Bucharest, Romania.
| | - Lucian Dorobantu
- Cardiomyopathy Center, Monza Hospital, Tony Bulandra Street 27, 021968 Bucharest, Romania.
| | - Alina Ioana Scarlatescu
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, Floreasca Street 8, 014461 Bucharest, Romania.
| | - Diana Zamfir
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, Floreasca Street 8, 014461 Bucharest, Romania.
| | - Monica Stoian
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, Floreasca Street 8, 014461 Bucharest, Romania.
| | - Sebastian Onciul
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, Floreasca Street 8, 014461 Bucharest, Romania.
- Department 4-Cardiothoracic Pathology, University of Medicine and Pharmacy Carol Davila, Eroii Sanitari Bvd. 8, 050474 Bucharest, Romania.
| | - Maria Dorobantu
- Department of Cardiology, Clinical Emergency Hospital of Bucharest, Floreasca Street 8, 014461 Bucharest, Romania.
- Department 4-Cardiothoracic Pathology, University of Medicine and Pharmacy Carol Davila, Eroii Sanitari Bvd. 8, 050474 Bucharest, Romania.
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8
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Alcohol Septal Ablation for Hypertrophic Obstructive Cardiomyopathy. Interv Cardiol 2016. [DOI: 10.1002/9781118983652.ch54] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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9
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Noble S, Sigwart U. Therapeutic management of hypertrophic obstructive cardiomyopathy: alcohol septal ablation or surgical myomectomy? Expert Rev Cardiovasc Ther 2014; 12:1041-4. [DOI: 10.1586/14779072.2014.942287] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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10
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Geske JB, Klarich KW, Ommen SR, Schaff HV, Nishimura RA. Septal reduction therapies in hypertrophic cardiomyopathy: comparison of surgical septal myectomy and alcohol septal ablation. Interv Cardiol 2014. [DOI: 10.2217/ica.14.8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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11
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Fiarresga A, Cacela D, Galrinho A, Ramos R, de Sousa L, Bernardes L, Patrício L, Cruz Ferreira R. Ablação septal alcoólica no tratamento da cardiomiopatia hipertrófica obstrutiva - experiência de quatro anos de um centro. Rev Port Cardiol 2014; 33:1-10. [DOI: 10.1016/j.repc.2013.04.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Accepted: 04/25/2013] [Indexed: 10/25/2022] Open
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12
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Alcohol septal ablation in obstructive hypertrophic cardiomyopathy: Four years of experience at a reference center. REVISTA PORTUGUESA DE CARDIOLOGIA (ENGLISH EDITION) 2014. [DOI: 10.1016/j.repce.2013.04.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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13
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Fassa AA, Sigwart U. Alcohol Septal Ablation for Hypertrophic Obstructive Cardiomyopathy. Interv Cardiol 2011. [DOI: 10.1002/9781444319446.ch26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Fifer MA, Sigwart U. Controversies in cardiovascular medicine. Hypertrophic obstructive cardiomyopathy: alcohol septal ablation. Eur Heart J 2011; 32:1059-64. [PMID: 21447511 DOI: 10.1093/eurheartj/ehr013] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Alcohol septal ablation (ASA) was introduced in 1994 as an alternative to septal myectomy for patients with hypertrophic obstructive cardiomyopathy and symptoms refractory to medical therapy. This procedure alleviates symptoms by producing a targeted, limited infarction of the upper interventricular septum, resulting in an increase in left ventricular outflow tract (LVOT) diameter, a decrease in LVOT gradient, and regression of the component of LV hypertrophy that is due to pressure overload. Clinical success, with improvement in symptoms and reduction in gradient, is achieved in the great majority of patients with either resting or provocable LVOT obstruction. The principal morbidity of the procedure is complete heart block, resulting in some patients in the requirement for a permanent pacemaker. The introduction of myocardial contrast echocardiography as a component of the ASA procedure has contributed to the induction of smaller myocardial infarctions with lower dosages of alcohol and, in turn, fewer complications. Non-randomized comparisons of septal ablation and septal myectomy have shown similar mortality rates and post-procedure New York Heart Association class for the two procedures.
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Affiliation(s)
- Michael A Fifer
- Cardiology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, 55 Fruit Street, Boston, MA 02114, USA
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Desai MY, Ommen SR, McKenna WJ, Lever HM, Elliott PM. Imaging Phenotype Versus Genotype in Hypertrophic Cardiomyopathy. Circ Cardiovasc Imaging 2011; 4:156-68. [DOI: 10.1161/circimaging.110.957936] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Milind Y. Desai
- From the Heart and Vascular Institute (M.Y.D.), Cleveland Clinic, and Cleveland Clinic Foundation (H.M.L.), Cleveland, OH; Department of Cardiovascular Medicine (S.R.O.), Mayo Clinic, Rochester, MN; and Department of Cardiovascular Medicine (W.J.M., P.M.E.), The Heart Hospital, University College, London, England
| | - Steve R. Ommen
- From the Heart and Vascular Institute (M.Y.D.), Cleveland Clinic, and Cleveland Clinic Foundation (H.M.L.), Cleveland, OH; Department of Cardiovascular Medicine (S.R.O.), Mayo Clinic, Rochester, MN; and Department of Cardiovascular Medicine (W.J.M., P.M.E.), The Heart Hospital, University College, London, England
| | - William J. McKenna
- From the Heart and Vascular Institute (M.Y.D.), Cleveland Clinic, and Cleveland Clinic Foundation (H.M.L.), Cleveland, OH; Department of Cardiovascular Medicine (S.R.O.), Mayo Clinic, Rochester, MN; and Department of Cardiovascular Medicine (W.J.M., P.M.E.), The Heart Hospital, University College, London, England
| | - Harry M. Lever
- From the Heart and Vascular Institute (M.Y.D.), Cleveland Clinic, and Cleveland Clinic Foundation (H.M.L.), Cleveland, OH; Department of Cardiovascular Medicine (S.R.O.), Mayo Clinic, Rochester, MN; and Department of Cardiovascular Medicine (W.J.M., P.M.E.), The Heart Hospital, University College, London, England
| | - Perry M. Elliott
- From the Heart and Vascular Institute (M.Y.D.), Cleveland Clinic, and Cleveland Clinic Foundation (H.M.L.), Cleveland, OH; Department of Cardiovascular Medicine (S.R.O.), Mayo Clinic, Rochester, MN; and Department of Cardiovascular Medicine (W.J.M., P.M.E.), The Heart Hospital, University College, London, England
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Unverdorben M, von Holt K, Winkelmann BR. Smoking and atherosclerotic cardiovascular disease: part III: functional biomarkers influenced by smoking. Biomark Med 2010; 3:807-23. [PMID: 20477716 DOI: 10.2217/bmm.09.69] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Smoking cigarettes induces rapidly occurring and reversible functional changes in the cardiovascular system, which precede morphologic changes. These functional changes are also related to atherosclerotic disease development and thus may qualify as prognostic parameters in chronic smokers. As opposed to smoking-induced morphologic changes functional alterations occur and revert within minutes, thus, allowing for the detection of smoking-induced effects on the cardiovascular system within minutes following exposure to mainstream smoke. Some alterations represent 'direct' changes (e.g., endothelial function), others reflect changes in a different organ system (e.g., the autonomous nervous system influencing heart rate variability), while some represent the sum of alterations in many organs and systems (e.g., exercise performance influenced by the autonomous nervous and by endothelial and cardiac function). Since a specific functional parameter usually changes with at least one or several others, caution should be exercised when trying to establish a direct cause relationship between the alteration of a single parameter and a clinical outcome.
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Affiliation(s)
- Martin Unverdorben
- Clinical Research Institute, Center for Cardiovascular Diseases, Heinz-Meise-Strasse 100, 36199 Rotenburg an der Fulda, Germany.
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Wang J, Buergler JM, Veerasamy K, Ashton YP, Nagueh SF. Delayed Untwisting. J Am Coll Cardiol 2009; 54:1326-34. [DOI: 10.1016/j.jacc.2009.05.064] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Revised: 05/14/2009] [Accepted: 05/25/2009] [Indexed: 10/20/2022]
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Golden jubilee of hypertrophic cardiomyopathy: is alcohol septal ablation the gold standard? CARDIOVASCULAR REVASCULARIZATION MEDICINE 2009; 10:172-8. [DOI: 10.1016/j.carrev.2009.02.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2009] [Revised: 02/17/2009] [Accepted: 02/17/2009] [Indexed: 11/23/2022]
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19
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Soon CY, Buergler JM. Alcohol septal ablation and the Brockenbrough-Braunwald phenomenon. Catheter Cardiovasc Interv 2009; 72:1016-24. [PMID: 19021274 DOI: 10.1002/ccd.21766] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chao Y Soon
- Methodist DeBakey Cardiology Associates, 6550 Fannin Street, Suite 1901, Houston, Texas 77030, USA
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Alam M, Dokainish H, Lakkis NM. Hypertrophic obstructive cardiomyopathy-alcohol septal ablation vs. myectomy: a meta-analysis. Eur Heart J 2009; 30:1080-7. [DOI: 10.1093/eurheartj/ehp016] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Rhee EK, Nigro JJ, Pophal SG. Therapeutic options in hypertrophic cardiomyopathy: A pediatric perspective. CURRENT TREATMENT OPTIONS IN CARDIOVASCULAR MEDICINE 2008; 10:433-41. [DOI: 10.1007/s11936-008-0035-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Echocardiography in hypertrophic cardiomyopathy: the role of conventional and emerging technologies. JACC Cardiovasc Imaging 2008; 1:787-800. [PMID: 19356516 DOI: 10.1016/j.jcmg.2008.09.002] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2008] [Revised: 08/27/2008] [Accepted: 09/05/2008] [Indexed: 02/07/2023]
Abstract
Hypertrophic cardiomyopathy is a relatively common inherited cardiomyopathy that is occasionally challenging to differentiate from hypertensive heart disease and athlete hearts on the basis of morphologic or functional abnormalities alone. Echocardiography has traditionally played a preeminent role in the diagnosis, formulation of management strategies, and the prognostication of this complex disease. In this review, we briefly profile the utility and pitfalls of established echocardiographic modalities and discuss the evolving role of novel echocardiographic imaging modalities such as tissue Doppler, Doppler-based strain, 2-dimensional strain (speckle tracking imaging), and 3-dimensional imaging in the assessment of hypertrophic cardiomyopathy.
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Ramcharitar S, Meliga E, Kirschbaum SW, ten Cate FJ, van Geuns RJ, Serruys PW. Acute hemodynamic changes in percutaneous transluminal septal coil embolization for hypertrophic obstructive cardiomyopathy. ACTA ACUST UNITED AC 2008; 5:806-10. [PMID: 18838967 DOI: 10.1038/ncpcardio1355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2008] [Accepted: 06/27/2008] [Indexed: 11/09/2022]
Abstract
BACKGROUND A 48-year-old man with hypertrophic obstructive cardiomyopathy (HOCM) presented with palpitations, symptoms of medically refractory class II angina, and NYHA class II-III heart failure. INVESTIGATIONS Physical examination revealed a grade 3 systolic murmur that increased to grade 4 with exercise. Echocardiography showed marked septal thickening (17 mm), a left ventricular outflow tract gradient (LVOTG) of 95 mmHg, and a 3+ systolic anterior motion of the mitral valve apparatus. No other pathology was noted with cardiac MRI or with coronary angiography. DIAGNOSIS Severe symptomatic HOCM. MANAGEMENT Coil embolization of the first two septal vessels resulted in a limited septal infarct (creatine kinase-MB 36.6 microg/l; troponin T 0.43 microg/l) that corresponded to a mass of 8.1 g on gadolinium contrast cardiac MRI. The LVOTG decreased immediately from 78 mmHg to 35 mmHg. On pressure-volume loops, contractile isovolemic and systolic ejectional parameters decreased, while an improvement in diastolic left ventricular function was observed. CONCLUSION Septal coil embolization acutely and effectively reduced the LVOTG in a patient with drug-refractory HOCM.
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Sorajja P, Nishimura RA, Ommen SR, Rihal CS, Gersh BJ, Holmes DR. Effect of Septal Ablation on Myocardial Relaxation and Left Atrial Pressure in Hypertrophic Cardiomyopathy. JACC Cardiovasc Interv 2008; 1:552-60. [DOI: 10.1016/j.jcin.2008.07.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2008] [Revised: 07/08/2008] [Accepted: 07/11/2008] [Indexed: 11/30/2022]
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Meliga E, Steendijk P, Valgimigli M, Ten Cate FJ, Serruys PW. Effects of percutaneous transluminal septal myocardial ablation for obstructive hypertrophic cardiomyopathy on systolic and diastolic left ventricular function assessed by pressure-volume loops. Am J Cardiol 2008; 101:1179-84. [PMID: 18394455 DOI: 10.1016/j.amjcard.2007.12.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2007] [Revised: 12/09/2007] [Accepted: 12/09/2007] [Indexed: 10/22/2022]
Abstract
The aim of the present study was to determine the long-term effects of percutaneous transluminal septal myocardial ablation (PTSMA) on systolic and diastolic left ventricular (LV) functions in patients with obstructive hypertrophic cardiomyopathy (HC). Ten consecutive patients with symptomatic HC despite optimal medical treatment were referred for PTSMA at our center. LV systolic and diastolic functions were assessed by online LV pressure-volume loops obtained by conductance catheter at baseline and at 6 months after the procedure. At follow-up, the mean gradients at rest and after extrasystole were significantly decreased compared with baseline (88 +/- 29 to 21 +/- 11 mm Hg and 130 +/- 50 to 35 +/- 22 mm Hg, respectively, p <0.01 for the 2 comparisons). End-systolic and end-diastolic pressures significantly decreased (p <0.01), whereas end-systolic and end-diastolic LV volumes significantly increased (p <0.01 for the 2 comparisons). Cardiac output and stroke volume were unchanged, as were ejection fraction (p = 0.25) and maximum dP/dt (p = 0.13). The slope of the end-systolic pressure-volume relation was not decreased, indicating a preserved contractility. The relaxation constant time, end-diastolic stiffness, projected volume of the end-diastolic pressure-volume relation at 30 mm Hg, and diastolic stiffness constant showed a significant improvement of active and passive myocardial diastolic properties. In conclusion, PTSMA is an effective method in the treatment of symptomatic patients with HC. At 6-month follow-up, the LV-aortic gradient was decreased and active and passive LV diastolic properties were increased. Myocardial contractility was not decreased and general hemodynamics was maintained.
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Vural AH, Tiryakioğlu O, Türk T, Ata Y, Ari H, Yalçinkaya S, Erkut B, Bozat T, Ozyazicioğlu A. Treatment modalities in hypertrophic obstructive cardiomyopathy: surgical myectomy versus percutaneous septal ablation. Heart Surg Forum 2008; 10:493-7. [PMID: 18187386 DOI: 10.1532/hsf98.20071136] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND The aim of this study was to compare the results of percutaneous septal myocardial ablation (PSMA) and surgical myectomy (SM) for decreasing the left ventricular outflow tract (LVOT) gradient, septal thickness, ventricular dimensions, and mitral regurgitation (MR) in patients with symptomatic hypertrophic obstructive cardiomyopathy. METHODS We treated 40 patients (mean age, 24.4 +/- 6.8 years; 34 male and 6 female patients) between June 2002 and April 2006. Twenty-four patients underwent SM, and 16 patients underwent PSMA. All patients were symptomatic despite maximal medical treatment and had an LVOT gradient higher than 65 mm Hg. Their echocardiographic data were recorded before and after the procedure and then compared. The patients were followed up postoperatively for a mean of 13 months. RESULTS There was no mortality in either group. One year after the procedure, the LVOT gradients for the 2 groups were not statistically different. During the follow-up, moderate MR was found in 4 patients (25%) in the ablation group and in 2 patients (8.3%) in the myectomy group. Exercise capacity and New York Heart Association class improved after PSMA, whereas postoperative MR severity and effort capacity were better in the surgical group. CONCLUSION The 2 approaches yielded similar results with regard to reducing the LVOT gradient. We conclude that SM is preferable to PSMA in cases with MR.
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Affiliation(s)
- A Hakan Vural
- Department of Cardiovascular Surgery, Bursa Yüksek Ihtisas Education and Research Hospital, Bursa, Turkey.
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BUERGLER JOHNM, ALAM SHAHED, SPENCER WILLIAM, KLEIMAN NEALS, MELENDEZ YELENA, FRANKLIN JENNIFER, NAGUEH SHERIFF. Initial Experience with Alcohol Septal Ablation Using a Novel Magnetic Navigation System. J Interv Cardiol 2007; 20:559-63. [DOI: 10.1111/j.1540-8183.2007.00285.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Affiliation(s)
- Michael A Fifer
- Cardiology Division, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114-2696, USA.
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Nagueh SF, Mahmarian JJ. Noninvasive cardiac imaging in patients with hypertrophic cardiomyopathy. J Am Coll Cardiol 2006; 48:2410-22. [PMID: 17174177 DOI: 10.1016/j.jacc.2006.07.065] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2006] [Revised: 06/28/2006] [Accepted: 07/30/2006] [Indexed: 01/24/2023]
Abstract
Hypertrophic cardiomyopathy (HCM) is the most common inherited cardiomyopathy and the most common cause of cardiac death in young athletes in the U.S. Noninvasive imaging plays an important role in detecting the disease, understanding its pathophysiology, and selecting as well as guiding appropriate therapy. In this review, we discuss the existing methodology with emphasis on current and emerging clinical applications in patients with HCM.
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Affiliation(s)
- Sherif F Nagueh
- Department of Cardiology, The Methodist DeBakey Heart Center, The Methodist Hospital, Houston, Texas 77030, USA.
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Alam M, Dokainish H, Lakkis N. Alcohol septal ablation for hypertrophic obstructive cardiomyopathy: a systematic review of published studies. J Interv Cardiol 2006; 19:319-27. [PMID: 16881978 DOI: 10.1111/j.1540-8183.2006.00153.x] [Citation(s) in RCA: 128] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE Alcohol septal ablation (ASA) for hypertrophic obstructive cardiomyopathy (HOCM) has emerged as a lesser invasive alternative to surgical myectomy over the past decade. The purpose of this study is to analyze all the published literature on outcomes and complications after ASA. METHODS MEDLINE and PubMed were searched for all available published literature on ASA (June 1996-June 2005) using the terms hypertrophic obstructive cardiomyopathy (HOCM), alcohol septal ablation for hypertrophic obstructive cardiomyopathy, alcohol septal ablation for HOCM, alcohol septal ablation (ASA), transcoronary alcohol septal ablation for hypertrophic obstructive cardiomyopathy (TASH), transcoronary alcohol septal ablation for HOCM, nonsurgical septal reduction therapy (NSRT), and percutaneous transcoronary septal myocardial ablation (PTSMA). RESULTS A total of 42 published studies (2,959 patients) were analyzed. Mean age was 53.5 (35.4-72) years with a mean male to female ratio of 1.17. Mean follow-up was 12.7 +/- 0.3 months (1.5-43.2). Absolute ethanol (3 mL) was injected in 1.2 septal perforator arteries. On average, serum CK peaked at 964 units. At 12 months, there was a sustained decrease in resting and provoked LVOT gradient (65.3-15.8 and 125.4-31.5 mmHg, respectively) accompanied by reduction in basal septal diameter (20.9-13.9 mm), improvement in NYHA Class (2.9-1.2), and increase in exercise capacity (325.3-437.5 seconds). Early mortality (within 30 days) was 1.5% (0.0-5.0%) and late mortality (beyond 30 days) was 0.5% (0.0-9.3%). Other complications include ventricular fibrillation (2.2%), LAD dissection (1.8%), complete heart block requiring permanent pacemaker (10.5%), and pericardial effusion (0.6%). A repeat ASA was performed on 6.6% of patients and 1.9% of patients underwent surgical myomectomy with resolution of symptoms. CONCLUSIONS Literature to date suggests that ASA results in acute and intermediate-term favorable clinical and echocardiographic outcomes. A randomized controlled trial is needed to compare ASA and myomectomy in order to determine which technique provides maximal benefit.
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Affiliation(s)
- Mahboob Alam
- Baylor College of Medicine-Cardiology, Houston, Texas 77030, USA
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Zeng Z, Wang F, Dou X, Zhang S, Pu J. Comparison of percutaneous transluminal septal myocardial ablation versus septal myectomy for the treatment of patients with hypertrophic obstructive cardiomyopathy—A meta analysis. Int J Cardiol 2006; 112:80-4. [PMID: 16507323 DOI: 10.1016/j.ijcard.2005.10.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2005] [Revised: 09/24/2005] [Accepted: 10/02/2005] [Indexed: 01/28/2023]
Abstract
BACKGROUND The effects of percutaneous transluminal septal myocardial ablation (PTSMA) with septal myectomy in patients with hypertrophic obstructive cardiomyopathy (HOCM) are not thoroughly compared. METHODS Three articles comparing the effects of PTSMA and septal myectomy treatment for HOCM were identified from a search in Pubmed, and a meta analysis was conducted. RESULTS 177 patients (86 underwent PTSMA and 91 underwent septal myectomy) were included. Interventricular septum thickness was decreased from 22.1 to 15.1 mm (p<0.05) in PTSMA group and from 22.0 to 13.9 mm (p<0.05) in septal myectomy group; left ventricular end-diastolic dimension was increased from 41.8 to 45.2 mm (p<0.05) in PTSMA group and from 41.8 to 43.9 mm (p<0.05) in septal myectomy group; NYHA class was improved from 3.17 to 1.47 (p<0.05) in PTSMA group and from 2.97 to 1.36 (p<0.05) in septal myectomy group; there were no differences in the two groups. However, left ventricular outflow tract gradient was decreased from 76.0 to 15.7 mm Hg (p<0.05) in PTSMA group and from 74.7 to 9.4 mm Hg (p<0.05) in septal myectomy group and the effect of septal myectomy was better than PTSMA (p<0.05). CONCLUSIONS The effects of septal myectomy treatment for HOCM are better with regard to relief of LVOT gradient, and lower risk of pacemaker requirement, compared to PTSMA. Large randomized clinical trials further comparing the two treatments are suggested.
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Affiliation(s)
- Zhiyu Zeng
- Center for Arrhythmia Diagnosis and Treatment, Cardiovascular Institute and Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Miller DL, Li P, Gordon D, Armstrong WF. Histological characterization of microlesions induced by myocardial contrast echocardiography. Echocardiography 2005; 22:25-34. [PMID: 15660683 DOI: 10.1111/j.0742-2822.2005.03184.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
BACKGROUND Myocardial contrast echocardiography (MCE) has been shown to have a potential for apparently reversible side effects related to the interaction of ultrasound with the contrast microbubbles, including premature ventricular contractions and microvascular leakage. We investigated the potential for high-dose MCE to induce histologically definable microlesions. METHODS Myocardial contrast echocardiography with 1:4 end-systolic triggering was performed at 1.5 MHz and 1.7 mechanical index in a short axis view of the left ventricle in rats. Two high doses (500 microl/kg) of Optison agent were given 5 minutes apart during 10 minutes of echocardiography. For histology, the hearts were perfused and fixed in 10% neutral-buffered formalin. Slides from rats sacrificed 1 day after MCE were scored blind by a pathologist, and, in addition, photomicrographs in the anterior half were evaluated by digital image analysis. RESULTS In rats sacrificed 10 minutes after MCE, microvascular leakage and petechiae were highly significant. However, lesions displaying necrotic debris associated with inflammatory infiltrates were not histologically evident at this time. Heart samples 24 hours after MCE showed microlesions with inflammatory infiltrates scattered primarily over the anterior half of the sections. Pathologically, there was inflammatory cell infiltration in areas of 0.6 +/- 0.5% for shams and 3.6 +/- 3.6% for MCE (P < 0.01). Analysis of photographs from the anterior wall found microlesion areas of 0.5 +/- 0.8% for shams and 7.4 +/- 5.0% for MCE (P < 0.02). For rats sacrificed 1 week and 6 weeks after MCE, the microlesions healed to form small fibrous regions interspersed with normal myocytes. CONCLUSION High-dose MCE has a potential for causing microscale lesions in the myocardium and the possibility of therapeutic applications.
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Affiliation(s)
- Douglas L Miller
- Department of Internal Medicine (Cardiology), University of Michigan, Ann Arbor, Michigan 48109-0553, USA.
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Sengupta PP, Mehta V, Arora R, Mohan JC, Khandheria BK. Quantification of Regional Nonuniformity and Paradoxical Intramural Mechanics in Hypertrophic Cardiomyopathy by High Frame Rate Ultrasound Myocardial Strain Mapping. J Am Soc Echocardiogr 2005; 18:737-42. [PMID: 16003271 DOI: 10.1016/j.echo.2005.03.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study tested the hypothesis that linear mapping of regional myocardial strain comprehensively assesses variations in regional myocardial function in hypertrophic cardiomyopathy. Hypertrophic cardiomyopathy is characterized by disorganized myocardial architecture that results in spatial and temporal nonuniformity of regional function. Left ventricular deformation was quantified in 20 patients with hypertrophic cardiomyopathy and compared with 25 age- and sex-matched control subjects. Abnormalities in subendocardial strain ranged from reduced longitudinal shortening to paradoxical systolic lengthening and delayed regional longitudinal contractions that were often located in small subsegmental areas. These variations were underestimated significantly by arbitrary measurements compared with linear mapping, in which a region of interest was moved across the longitudinal length of left ventricle (difference of peak and least strain, 10.7% +/- 5.1% vs 17% +/- 5.5%; P < .001). Echocardiographic assessment of variations in regional strain requires careful mapping and may be inappropriately assessed if left ventricular segments are sampled at arbitrary focal locations.
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Abbas AE, Brewington SD, Dixon SR, Grines CL, O'Neill WW. Alcohol Septal Ablation for Hypertrophic Obstructive Cardiomyopathy. J Interv Cardiol 2005; 18:155-62. [PMID: 15966918 DOI: 10.1111/j.1540-8183.2005.04107.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
HOCM is a rare disorder of myocardium that may result in asymmetrical left ventricular septal hypertrophy and dynamic outflow obstruction. This may result in hemodynamic sequel that leads to deterioration of functional class in the majority of patients. Alcohol septal ablation may provide symptomatic relief in the majority of patients who fail medical therapy or who experience significantly high outflow gradients.
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Affiliation(s)
- Amr E Abbas
- Division of Cardiovascular Disease, William Beaumont Hospital, Royal Oak, Michigan, USA
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van Dockum WG, Beek AM, ten Cate FJ, ten Berg JM, Bondarenko O, Götte MJW, Twisk JWR, Hofman MBM, Visser CA, van Rossum AC. Early Onset and Progression of Left Ventricular Remodeling After Alcohol Septal Ablation in Hypertrophic Obstructive Cardiomyopathy. Circulation 2005; 111:2503-8. [PMID: 15867172 DOI: 10.1161/01.cir.0000165084.28065.01] [Citation(s) in RCA: 95] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background—
Alcohol septal ablation (ASA) reduces left ventricular outflow tract (LVOT) pressure gradient in patients with hypertrophic obstructive cardiomyopathy (HOCM), which leads to left ventricular remodeling. We sought to describe the early to midterm changes and modulating factors of the remodeling process using cardiac MRI (CMR).
Methods and Results—
CMR was performed at baseline and 1 and 6 months after ASA in 29 patients with HOCM (age 52±16 years). Contrast-enhanced CMR showed no infarct-related hyperenhancement outside the target septal area. Septal mass decreased from 75±23 g at baseline to 68±22 and 58±19 g (
P
<0.001) at 1- and 6-month follow-up, respectively. Remote, nonseptal mass decreased from 141±41 to 132±40 and 111±27 g (
P
<0.001), respectively. Analysis of temporal trends revealed that septal mass reduction was positively associated with contrast-enhanced infarct size and transmural or left-sided septal infarct location at both 1 and 6 months. Remote mass reduction was associated with infarct location at 6 months but not with contrast-enhanced infarct size. By linear regression analysis, percentage remote mass reduction correlated significantly with LVOT gradient reduction at 6-month follow-up (
P
=0.03).
Conclusions—
Left ventricular remodeling after ASA occurs early and progresses on midterm follow-up, modulated by CMR infarct size and location. Remote mass reduction is associated with infarct location and correlates with reduction of the LVOT pressure gradient. Thus, myocardial hypertrophy in HOCM is, at least in part, afterload dependent and reversible and is not exclusively caused by the genetic disorder.
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Affiliation(s)
- Willem G van Dockum
- Department of Cardiology, VU University Medical Center, Amsterdam, The Netherlands.
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Burri H, Sigwart U. Technology Insight: transcoronary ablation of septal hypertrophy. ACTA ACUST UNITED AC 2005; 2:101-7. [PMID: 16265381 DOI: 10.1038/ncpcardio0095] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2004] [Accepted: 12/15/2004] [Indexed: 11/08/2022]
Abstract
Among patients with hypertrophic cardiomyopathy, 5-10% have outflow tract obstruction that results in symptoms refractory to medical therapy. Surgical myectomy has been the gold standard for treating these patients since the 1960s. In the past 10 years, however, alcohol septal ablation has emerged as an alternative procedure. There is growing evidence to indicate that this technique is comparable to surgical myectomy with respect to hemodynamic and functional improvement, although no randomized comparative studies exist to date. The procedure consists of injecting as mall volume of alcohol into a septal perforator under balloon occlusion,preferably after localization of the target septal branch by myocardial contrast echocardiography. Relief of the gradient is instantaneous in about 90% of patients, and further decreases might occur over time. Functional class, exercise capacity and quality of life have been shown to be improved during follow-up. The main risk of the technique is atrioventricular block, which occurs in about 10% of patients. Because of this side-effect and a steep learning curve, the technique should be performed only by experienced operators and on carefully selected patients.
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Abstract
Left ventricular outflow tract obstruction can occur at the supravalvar, valvar, or subvalvar level. Each level of obstruction is associated with distinct symptomatology, natural history, and operative approach. Reconstructive techniques can usually be used with low operative risk and excellent immediate and longer-term outcomes. Valve replacement for valvar obstruction is advised when reconstruction is not possible. The Ross procedure has greatly improved the results of valve replacement in children.
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Rivera S, Sitges M, Azqueta M, Marigliano A, Velamazán M, Miranda-Guardiola F, Betriu A, Paré C. Remodelado ventricular izquierdo tras ablación septal percutánea con alcohol en pacientes con miocardiopatía hipertrófica obstructiva: estudio ecocardiográfico. Rev Esp Cardiol 2003; 56:1174-81. [PMID: 14670269 DOI: 10.1016/s0300-8932(03)77035-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
INTRODUCTION In patients with hypertrophic obstructive cardiomyopathy, obstruction in the left ventricular outflow tract may generate more hypertrophy. Our aim was to evaluate the impact of reducing ventricular outflow tract obstruction on left ventricular hypertrophy and remodeling after alcohol septal ablation. PATIENTS AND METHOD 20 patients with hypertrophic obstructive cardiomyopathy who underwent alcohol septal ablation were included. Doppler echocardiography was performed in all patients at baseline, immediately after alcohol septal ablation, and at 3 and 12 months' follow-up. Left ventricular diameters and wall thickness and pressure gradients in the ventricular outflow tract were determined. RESULTS Immediately after alcohol septal ablation, ventricular outflow tract pressure gradient decreased from 63.0 27.7 to 28.2 24.7 mmHg (p < 0.001), without significant changes in left ventricular dimensions. However, after 12 months we observed an increase in left ventricular end-diastolic (from 47.1 4.9 to 50.8 4.5 mm) and end-systolic diameter (from 27.1 3.0 to 33.7 4.6 mm), as well as a reduction in septal (from 19.5 4.0 to 15.5 2.7 mm) and posterior wall thickness (from 14.0 2.2 to 12.9 1.3 mm) (p < 0.01 in all cases). Left ventricular end-diastolic and end-systolic volumes increased (from 106.4 26.9 to 123.1 28.7 ml and from 50.2 17.3 to 56.7 18.3 ml, respectively, p < 0.01 in both cases), without changes in left ventricular ejection fraction. The reduction in ventricular outflow tract pressure gradient at 12 months' follow-up correlated significantly with the increase in left ventricular end-systolic diameter (r = 0.63; p < 0.01). CONCLUSIONS In patients with hypertrophic obstructive cardiomyopathy who underwent alcohol septal ablation, relief of ventricular outflow tract obstruction is associated with an increase in left ventricular chamber diameters and volume. These findings suggest that middle- and long-term ventricular remodeling and regression of hypertrophy occur in these patients, which may contribute to their clinical improvement.
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Affiliation(s)
- Socorro Rivera
- Institut d'Investigacions Biomèdiques August Pi i Sunyer. Institut de Malalties Cardiovasculars. Hospital Clínic. Universidad de Barcelona. Barcelona. España
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