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Papakonstantinou NA, Kanakis MA, Bobos D, Giannopoulos NM. Congenital, acquired, or both? The only two congenitally based, acquired heart diseases. J Card Surg 2021; 36:2850-2856. [PMID: 33908651 DOI: 10.1111/jocs.15588] [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] [Received: 04/08/2021] [Revised: 04/14/2021] [Accepted: 04/16/2021] [Indexed: 11/28/2022]
Abstract
Discrete subaortic stenosis (DSS) is a type of left ventricular outflow tract obstruction whereas double-chambered right ventricle is a form of right ventricular outflow tract obstruction. Both of these cardiac malformations share lots of similar characteristics which classify them as acquired developmental heart diseases despite their congenital anatomical substrate. Both of them are frequently associated to ventricular septal defects. The initial stimulus in their pathogenetic process is anatomical abnormalities or variations. Subsequently, a hemodynamic process is triggered finally leading to an abnormal subaortic fibroproliferative process with regard to DSS or to hypertrophy of ectopic muscles as far as double-chambered right ventricle is concerned. In many cases, these pathologies are developed secondarily to surgical management of other congenital or acquired heart defects. Moreover, high recurrence rates after initial successful surgical therapy, particularly regarding DSS, have been described. Finally, an interesting coexistence of DSS and double-chambered aortic ventricle has also been reported in some cases.
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Affiliation(s)
| | - Meletios A Kanakis
- Department of Pediatric and Congenital Heart Surgery, Onassis Cardiac Surgery Center, Athens, Greece
| | - Dimitrios Bobos
- Department of Pediatric and Congenital Heart Surgery, Onassis Cardiac Surgery Center, Athens, Greece
| | - Nicholas M Giannopoulos
- Department of Pediatric and Congenital Heart Surgery, Onassis Cardiac Surgery Center, Athens, Greece
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2
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Shar JA, Keswani SG, Grande-Allen KJ, Sucosky P. Computational Assessment of Valvular Dysfunction in Discrete Subaortic Stenosis: A Parametric Study. Cardiovasc Eng Technol 2021; 12:559-575. [PMID: 33432514 DOI: 10.1007/s13239-020-00513-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 12/22/2020] [Indexed: 01/16/2023]
Abstract
PURPOSE Discrete subaortic stenosis (DSS) is a left-ventricular outflow tract (LVOT) obstruction caused by a membranous lesion. DSS is associated with steep aortoseptal angles (AoSAs) and is a risk factor for aortic regurgitation (AR). However, the etiology of AR secondary to DSS remains unknown. This study aimed at quantifying computationally the impact of AoSA steepening and DSS on aortic valve (AV) hemodynamics and AR. METHODS An LV geometry reconstructed from cine-MRI data was connected to an AV geometry to generate a unified 2D LV-AV model. Six geometrical variants were considered: unobstructed (CTRL) and DSS-obstructed LVOT (DSS), each reflecting three AoSA variations (110°, 120°, 130°). Fluid-structure interaction simulations were run to compute LVOT flow, AV leaflet dynamics, and regurgitant fraction (RF). RESULTS AoSA steepening and DSS generated vortex dynamics alterations and stenotic flow conditions. While the CTRL-110° model generated the highest degree of leaflet opening asymmetry, DSS preferentially altered superior leaflet kinematics, and caused leaflet-dependent alterations in systolic fluttering. LVOT steepening and DSS subjected the leaflets to increasing WSS overloads (up to 94% increase in temporal shear magnitude), while DSS also increased WSS bidirectionality on the inferior leaflet belly (+ 0.30-point in oscillatory shear index). Although AoSA steepening and DSS increased diastolic transvalvular backflow, regurgitant fractions (RF < 7%) remained below the threshold defining clinical mild AR. CONCLUSIONS The mechanical interactions between AV leaflets and LVOT steepening/DSS hemodynamic derangements do not cause AR. However, the leaflet WSS abnormalities predicted in those anatomies provide new support to a mechanobiological etiology of AR secondary to DSS.
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Affiliation(s)
- Jason A Shar
- Department of Mechanical and Materials Engineering, Wright State University, Dayton, USA
| | - Sundeep G Keswani
- Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Baylor College of Medicine, Houston, USA
| | | | - Philippe Sucosky
- Department of Mechanical Engineering, Kennesaw State University, 840 Polytechnic Lane, Marietta, GA, 30060, USA.
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3
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Massé DD, Shar JA, Brown KN, Keswani SG, Grande-Allen KJ, Sucosky P. Discrete Subaortic Stenosis: Perspective Roadmap to a Complex Disease. Front Cardiovasc Med 2018; 5:122. [PMID: 30320123 PMCID: PMC6166095 DOI: 10.3389/fcvm.2018.00122] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Accepted: 08/17/2018] [Indexed: 12/13/2022] Open
Abstract
Discrete subaortic stenosis (DSS) is a congenital heart disease that results in the formation of a fibro-membranous tissue, causing an increased pressure gradient in the left ventricular outflow tract (LVOT). While surgical resection of the membrane has shown some success in eliminating the obstruction, it poses significant risks associated with anesthesia, sternotomy, and heart bypass, and it remains associated with a high rate of recurrence. Although a genetic etiology had been initially proposed, the association between DSS and left ventricle (LV) geometrical abnormalities has provided more support to a hemodynamic etiology by which congenital or post-surgical LVOT geometric derangements could generate abnormal shear forces on the septal wall, triggering in turn a fibrotic response. Validating this hypothetical etiology and understanding the mechanobiological processes by which altered shear forces induce fibrosis in the LVOT are major knowledge gaps. This perspective paper describes the current state of knowledge of DSS, articulates the research needs to yield mechanistic insights into a significant pathologic process that is poorly understood, and proposes several strategies aimed at elucidating the potential mechanobiological synergies responsible for DSS pathogenesis. The proposed roadmap has the potential to improve DSS management by identifying early targets for prevention of the fibrotic lesion, and may also prove beneficial in other fibrotic cardiovascular diseases associated with altered flow.
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Affiliation(s)
- Danielle D Massé
- Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH, United States
| | - Jason A Shar
- Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH, United States
| | - Kathleen N Brown
- Department of Bioengineering, Rice University, Houston, TX, United States
| | - Sundeep G Keswani
- Division of Pediatric Surgery, Texas Children's Hospital, Houston, TX, United States.,Department of Surgery, Baylor College of Medicine, Houston, TX, United States
| | | | - Philippe Sucosky
- Department of Mechanical and Materials Engineering, Wright State University, Dayton, OH, United States
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Moutakiallah Y, Maaroufi I, Aithoussa M, Bamous M, Abdou A, Atmani N, Hatim A, Amahzoune B, Bekkali YE, Boulahya A. [Subaortic diaphragm surgery]. Pan Afr Med J 2016; 23:265. [PMID: 27516830 PMCID: PMC4963174 DOI: 10.11604/pamj.2016.23.265.4212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 12/01/2014] [Indexed: 11/28/2022] Open
Abstract
Le diaphragme sous aortique se caractérise par une certaine latence clinique et une faible morbi-mortalité. La chirurgie reste le traitement de choix malgré un réel risque de récurrence à long terme. Nous rapportons 18 patients opérés entre Avril 1994 et Mars 2011 pour diaphragme sous aortique d’âge moyen de 18,1±9,7 ans avec 11 patients de sexe masculin. Le diaphragme était de nature fibreuse chez 13 patients et fibro-musculaire chez 5 patients. Tous les patients ont été opérés par résection de diaphragme associée à une myectomie, une plastie aortique, une fermeture de communication interventriculaire et une ligature de canal artériel perméable respectivement chez 3, 3, 2 et 2 patients. La Mortalité opératoire était nulle et sans aucun cas de trouble de conduction postopératoire. Le suivi a duré en moyenne 44,3±36,8 mois sans aucun décès tardif. Deux patients ont présenté une récidive de diaphragme qui a nécessité une réopération avec bonne évolution. La tendance actuelle dans la chirurgie du diaphragme se fait vers des interventions précoces et des résections plus extensives. Cependant, le risque de récidive impose une surveillance échographique systématique et rapprochée.
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Affiliation(s)
- Younes Moutakiallah
- Service de Chirurgie Cardiovasculaire, Hôpital Militaire d'Instruction Mohammed V, Rabat, Maroc
| | - Ilham Maaroufi
- Service de Chirurgie Cardiovasculaire, Hôpital Militaire d'Instruction Mohammed V, Rabat, Maroc
| | - Mahdi Aithoussa
- Service de Chirurgie Cardiovasculaire, Hôpital Militaire d'Instruction Mohammed V, Rabat, Maroc
| | - Mehdi Bamous
- Service de Chirurgie Cardiovasculaire, Hôpital Militaire d'Instruction Mohammed V, Rabat, Maroc
| | - Abdessamad Abdou
- Service de Chirurgie Cardiovasculaire, Hôpital Militaire d'Instruction Mohammed V, Rabat, Maroc
| | - Noureddine Atmani
- Service de Chirurgie Cardiovasculaire, Hôpital Militaire d'Instruction Mohammed V, Rabat, Maroc
| | - Abdedaïm Hatim
- Réanimation de Chirurgie Cardiovasculaire, Hôpital Militaire d'Instruction Mohammed V, Rabat, Maroc
| | - Brahim Amahzoune
- Service de Chirurgie Cardiovasculaire, Hôpital Militaire d'Instruction Mohammed V, Rabat, Maroc
| | - Youssef El Bekkali
- Service de Chirurgie Cardiovasculaire, Hôpital Militaire d'Instruction Mohammed V, Rabat, Maroc
| | - Abdelatif Boulahya
- Service de Chirurgie Cardiovasculaire, Hôpital Militaire d'Instruction Mohammed V, Rabat, Maroc
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Carneiro ALHDS, Braulio R, Nunes MCP. Echocardiography of a young man with dyspnoea. Subaortic membrane. Heart 2015. [PMID: 26209216 DOI: 10.1136/heartjnl-2014-307349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
| | - Renato Braulio
- Hospital das Clínicas, School of Medicine of the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maria Carmo Pereira Nunes
- Hospital das Clínicas, School of Medicine of the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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Tefera E, Gedlu E, Bezabih A, Moges T, Centella T, Marianeschi S, Nega B, van Doorn C, Sasson L, Teodori M. Outcome in Children Operated for Membranous Subaortic Stenosis. World J Pediatr Congenit Heart Surg 2015; 6:424-8. [DOI: 10.1177/2150135115589789] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background: The optimal surgical procedure for treatment of fibromembranous subaortic stenosis has been a subject of debate. We report our experience with patients treated for membranous subaortic stenosis using membrane resection alone and membrane resection plus aggressive septal myectomy. Methods: Patients followed in the pediatric cardiology clinic of a university hospital, who had undergone surgery for subaortic stenosis between 2002 and 2013 were reviewed. Recurrence of subaortic membrane, residual left ventricular outflow gradient, and aortic valve function were analyzed. Results: Forty-six patients underwent surgery for subaortic membrane. Of these, 19 had membrane resection plus aggressive septal myectomy, while 27 had membrane resection alone. Mean age at surgery for the membrane resection group was 7.7 ± 3.9 years and 10.9 ± 3.6 years for the membrane resection plus aggressive myectomy group. Preoperative subaortic gradient for the membrane resection group was 75.5 ± 26.7 mm Hg and 103.2 ± 39.7 mm Hg for the membrane resection plus aggressive myectomy group. The mean follow-up left ventricular outflow tract gradient was 42.3 ± 31.3 mm Hg in the membrane resection group, while it was 11.6 ± 6.3 mm Hg in the aggressive septal myectomy group. Nine patients from the membrane resection group had significant regrowth of the subaortic membrane during the follow-up period, while none of the aggressive septal myectomy group had detectable membrane on echocardiography. Seven of the nine patients with recurrence of the subaortic membrane underwent subsequent membrane resection plus aggressive septal myectomy. Intraoperative finding in all these redo cases was recurrence (growth) of a subaortic membrane. Conclusion: Aggressive septal myectomy offers less chance of recurrence, freedom from reoperation, and an improved aortic valve function. This is especially important in sub-Saharan settings where a chance of getting a second surgery is unpredictable.
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Affiliation(s)
- Endale Tefera
- Department of Pediatrics and Child Health, Cardiology Division, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Etsegenet Gedlu
- Department of Pediatrics and Child Health, Cardiology Division, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Abebe Bezabih
- Department of Surgery, Cardiothoracic Surgery Unit, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Tamirat Moges
- Department of Pediatrics and Child Health, Cardiology Division, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Tomasa Centella
- Department of Cardiovascular Surgery, Ramon y Cajal University Hospital, Madrid, Spain
| | - Stefano Marianeschi
- Department of Cardiothoracic Surgery, Pediatric Cardiac Surgery Unit, Niguarda Hospital, Milan, Italy
| | - Berhanu Nega
- Department of Surgery, Cardiothoracic Surgery Unit, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
| | - Carin van Doorn
- Congenital Cardiac Unit, Leeds Teaching Hospital NHS Trust, Leeds, United Kingdom
| | - Lior Sasson
- Department of Cardiothoracic Surgery, Wolfson Medical Center, Holon, Israel
| | - Michael Teodori
- Department of Surgery, Pediatric and Adult Congenital Heart Surgery Division, University of Arizona, Tucson, AZ, USA
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7
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Etnel JR, Takkenberg JJ, Spaans LG, Bogers AJ, Helbing WA. Paediatric subvalvular aortic stenosis: a systematic review and meta-analysis of natural history and surgical outcome. Eur J Cardiothorac Surg 2014; 48:212-20. [DOI: 10.1093/ejcts/ezu423] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 09/02/2014] [Indexed: 11/14/2022] Open
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8
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Ozyuksel A, Yildirim O, Onsel I, Bilal MS. Severe mitral regurgitation due to anterior mitral leaflet perforation after surgical treatment of discrete subaortic stenosis. BMJ Case Rep 2014; 2014:bcr-2014-204463. [PMID: 24859561 DOI: 10.1136/bcr-2014-204463] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Congenital subvalvular aortic stenosis may be associated with anomalies of the mitral valve. In this case, we present a patient with severe mitral valve regurgitation due to a perforation in the anterior mitral leaflet detected 4 months after an operation for relief of subaortic stenosis. A 10-year-old male patient who was operated for subvalvular aortic stenosis in another clinic was admitted to our hospital, and transthoracic echocardiography revealed severe mitral valve regurgitation due to a defect that was demonstrated at the anterior valve leaflet. The perforated area at the mitral valve zone A1 was repaired with a PTFE patch. The patient was successfully operated for the mitral valve perforation and the postoperative course was uneventful. In our case, the perforation in the anterior mitral leaflet implies a possible implementation of inappropriate surgical technique which necessitated a second surgical intervention after the initial operation.
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Affiliation(s)
- Arda Ozyuksel
- Department of Cardiovascular Surgery, Medipol University, Istanbul, Turkey
| | - Ozgur Yildirim
- Department of Cardiovascular Surgery, Medicana International Hospital, Istanbul, Turkey
| | - Ibrahim Onsel
- Department of Anesthesiology, Medicana International Hospital, Istanbul, Turkey
| | - Mehmet Salih Bilal
- Department of Cardiovascular Surgery, Medicana International Hospital, Istanbul, Turkey
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9
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Hisatomi K, Hashizume K, Tanigawa K, Miura T, Matsukuma S, Yokose S, Sumi M, Eishi K. Asymptomatic and isolated accessory mitral valve tissue in an adult. Gen Thorac Cardiovasc Surg 2014; 64:105-8. [PMID: 24740639 DOI: 10.1007/s11748-014-0399-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 03/10/2014] [Indexed: 11/28/2022]
Abstract
Accessory mitral valve (AMV) tissue is a congenital anomaly that occurs in association with other congenital anomalies, and is an uncommon cause of left ventricular outflow tract obstruction. It is usually detected in early childhood when accompanied by symptoms of obstruction of the left ventricular outflow tract, and is rarely diagnosed in adults. We present a case of a 53-year-old man who was referred to our institution for evaluation of a systolic heart murmur. Echocardiography disclosed a diagnosis of AMV tissue. This case was uncommon because of the lack of severe obstruction of left ventricular outflow, cardiac symptoms, or other cardiac anomalies. We were able to carry out surgical resection of AMV tissue to avert possible progression of aortic insufficiency and the risk of a cerebrovascular embolization. The patient's postoperative course was uneventful, and postoperative echocardiography showed no residual accessory mitral tissue.
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Affiliation(s)
- Kazuki Hisatomi
- Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
| | - Koji Hashizume
- Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Kazuyoshi Tanigawa
- Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Takashi Miura
- Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Seiji Matsukuma
- Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Shogo Yokose
- Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Mizuki Sumi
- Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
| | - Kiyoyuki Eishi
- Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan
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Azari A, Moravvej Z, Fazlinezhad A, Bigdelu L. Congenital coronary artery anomaly simulating a ventricular septal defect. Asian Cardiovasc Thorac Ann 2014; 23:1062-4. [PMID: 24719168 DOI: 10.1177/0218492314531422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Anomalous origin of the circumflex artery of the right sinus of Valsalva is a rare finding which may be present with other cardiac malformations. A 19-year-old man presented with syncope. A transthoracic echocardiogram revealed discrete subaortic stenosis with a small defect just below the aortic valve, suggesting a ventricular septal defect. Transesophageal echocardiography showed anomalous origin of the circumflex artery from the right sinus of Valsalva. This was confirmed by coronary angiography. The patient underwent successful web resection without concomitant coronary surgery. Failure to demonstrate a coronary artery anomaly can be misleading for surgeons and perilous for patients.
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Affiliation(s)
- Ali Azari
- Department of Cardiac Surgery, Ghaem Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Atherosclerosis Prevention Research Center, Imam Reza Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Moravvej
- Cardiovascular Research Center, Ghaem Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Students Research Committee, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Afsoon Fazlinezhad
- Cardiovascular Research Center, Ghaem Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Department of Cardiology, Ghaem hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Leila Bigdelu
- Cardiovascular Research Center, Ghaem Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Atherosclerosis Prevention Research Center, Imam Reza Hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran Department of Cardiology, Ghaem hospital, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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11
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Doğan A, Aksoy H, Şimşek H. Friedreich’s ataxia associated with subaortic membrane. Herz 2014; 39:282-3. [DOI: 10.1007/s00059-013-3812-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2012] [Revised: 02/28/2013] [Accepted: 03/15/2013] [Indexed: 10/26/2022]
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12
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Uysal F, Bostan OM, Signak IS, Semizel E, Cil E. Evaluation of subvalvular aortic stenosis in children: a 16-year single-center experience. Pediatr Cardiol 2013; 34:1409-14. [PMID: 23456292 DOI: 10.1007/s00246-013-0664-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2012] [Accepted: 02/09/2013] [Indexed: 11/29/2022]
Abstract
Subvalvular aortic stenosis accounts for 1-2 % of all congenital heart disease and for 8-20 % of cases of left-ventricular outflow tract (LVOT) obstruction in children. Recurrence of subaortic stenosis (SAS) is not uncommon after surgical management. This study was performed to investigate the clinical and surgical outcomes and to estimate the predictability of recurrences of SAS. Seventy-nine patients age 3-21 years with SAS between 1994 and 2010 were reviewed. Fifty-one patients had discrete SAS, whereas the remaining 15 patients had fibromuscular ridge-type SAS. Mean follow-up time without surgery was 22 months (range of 1-94). Forty-one patients with a diagnosis of SAS underwent surgery. Recurrence rates were 22.7 % (15 patients), and these patients developed SAS at a mean of 4.7 years follow-up. We performed second surgical membrane resection in only 1 patient. The risk of recurrence of SAS was only linked to higher preoperative LVOT gradient. Twenty-three patients had no aortic regurgitation (AR) at preoperative echocardiography. Of these, 39.1 % had trivial, 8.7 % had mild, and 8.7 % had moderate AR after surgery; there was no significant AR. We conclude that surgical intervention was required most of the time in patients with SAS, and surgical outcomes was excellent even if there were associated cardiac defects. The risk of recurrences was higher, especially in patients with higher initial LVOT gradients, although a second surgery was rarely necessary in these patients.
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Affiliation(s)
- Fahrettin Uysal
- Department of Pediatric Cardiology, University of Uludag, Bursa, Turkey.
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13
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Huang Z. Anomalous muscle band resulting in severe subaortic stenosis in an adult. J Card Surg 2013; 28:503-5. [PMID: 23808588 DOI: 10.1111/jocs.12161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Abnormalities of the mitral valve are uncommon causes of subaortic stenosis. This paper describes an anomalous muscle band of the mitral valve causing severe subaortic stenosis.
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Affiliation(s)
- Zhixiong Huang
- Department of Cardiovascular Surgery, Cardiovascular Institute, Fu Wai Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing, China
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14
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Chaubey S, Khan H, Zaheer A, Desai J. Accessory mitral valve associated with transient ischemic attacks. J Card Surg 2011; 26:623-4. [PMID: 22017208 DOI: 10.1111/j.1540-8191.2011.01333.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Accessory mitral valve (AMV) is an unusual congenital cardiac anomaly typically presenting with left ventricular outflow obstruction. We describe a patient with AVM presenting with transient ischemic attack.
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Affiliation(s)
- Sanjay Chaubey
- Department of Cardiothoracic Surgery, Kings College Hospital, Denmark Hill, London, United Kingdom
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15
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Lopes R, Lourenço P, Gonçalves A, Cruz C, Maciel MJ. The Natural History of Congenital Subaortic Stenosis. CONGENIT HEART DIS 2011; 6:417-23. [DOI: 10.1111/j.1747-0803.2011.00550.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Drolet C, Miro J, Côté JM, Finley J, Gardin L, Rohlicek CV. Long-Term Pediatric Outcome of Isolated Discrete Subaortic Stenosis. Can J Cardiol 2011; 27:389.e19-24. [DOI: 10.1016/j.cjca.2010.12.051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2010] [Accepted: 03/25/2010] [Indexed: 10/18/2022] Open
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17
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Beddy P, Raj V, Williams I, Gopalan D. Multidetector computed tomographic assessment of subvalvular aortic stenosis. Clin Radiol 2011; 66:187-9. [DOI: 10.1016/j.crad.2010.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2010] [Revised: 08/24/2010] [Accepted: 09/03/2010] [Indexed: 11/25/2022]
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18
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Kozak MF, Sivanandam S, De Marchi CH, Kozak ACLFB, Croti UA, Moscardini AC, Dearani JA. A Trileaflet “Mitral Valve” with Three Papillary Muscles: Brand New Echocardiographic Finding. CONGENIT HEART DIS 2011; 6:70-3. [DOI: 10.1111/j.1747-0803.2010.00427.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Yuan SM, Shinfeld A, Mishaly D, Haizler R, Ghosh P, Raanani E. Accessory mitral valve tissue: a case report and an updated review of literature. J Card Surg 2009; 23:769-72. [PMID: 19017009 DOI: 10.1111/j.1540-8191.2008.00633.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Accessory mitral valve tissue is an unusual congenital cardiac anomaly and a rare cause responsible for left ventricular outflow tract obstruction. An 18-year-old patient was referred to this hospital due to an occasionally noted heart murmur in a medical examination. Echocardiography facilitated the diagnosis of accessory mitral valve tissue. To relieve the left ventricular outflow tract obstruction, an operation including resection of the accessory mitral valve tissue, implantation of artificial chordae tendineae, and mitral valve annuloplasty was performed successfully. Postoperative echocardiography showed a complete relief of the mitral valve leaflets and a wide patent left ventricular outflow tract. However, transient ischemic attack and Horner's syndrome complicated the patient early postoperatively. He was administered with a high dose of aspirin, and he recovered shortly. Surgical removal is in so much mandatory as a definite diagnosis of accessory mitral valve tissue with left ventricular outflow tract obstruction is established. A prophylactic treatment should be applied to the patients with accessory mitral valve tissue in virtue of their susceptibility to neurological events.
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Affiliation(s)
- Shi-Min Yuan
- Department of Cardiac and Thoracic Surgery, The Chaim Sheba Medical Center, Tel Hashomer, Israel
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Butany J, Vaideeswar P, David TE. Discrete subaortic membranes in adults--a clinicopathological analysis. Cardiovasc Pathol 2008; 18:236-42. [PMID: 18823798 DOI: 10.1016/j.carpath.2008.06.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2006] [Revised: 02/20/2008] [Accepted: 06/26/2008] [Indexed: 10/21/2022] Open
Abstract
INTRODUCTION A discrete subaortic membrane (DSM) is one of the causes of subaortic stenosis in children. The incidence, characteristics, and the therapeutic options for such membranes in adults have not been well documented. This report documents the clinical and pathological features of DSM in adults. METHODS DSMs, surgically excised over a 10-year period in a large adult tertiary care center, were reviewed with regard to the age and gender of the patients, clinical findings, and the morphological features. RESULTS Among the 19 adults, there were six males and 13 females, with age ranging from 26 to 75 years. The patients most often presented with dyspnea, fatigability, and palpitation for 3 months to 2 years. Four patients (21%) had other congenital heart disease in association with the DSM; in the rest, the membranes were isolated occurrences (79%). A cardiac murmur or the presence of membranes had been noted in childhood in four patients. Tissue growths over the ventricular surface of the anterior mitral leaflet were seen in 18 cases. Irrespective of the gross appearance, the stenosing lesions exhibited five tissue layers, beginning from the luminal aspect, endothelium, acid mucopolysaccharide-rich subendothelial layer, collagen-rich fibrous layer, fibroelastotic layer, and a smooth muscle layer. Twelve patients (63%) had aortic regurgitation, which necessitated repair or replacement in seven. Septal myectomy resulted in conduction abnormalities in nine. CONCLUSIONS The study describes the occurrence of DSM in adults. It is important to remember that it can occur following a repair of underlying congenital heart disease.
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Affiliation(s)
- Jagdish Butany
- Department of Pathology, Toronto General Hospital/University Health Network, Toronto, Ontario, Canada.
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Bharucha T, Ho SY, Vettukattil JJ. Multiplanar review analysis of three-dimensional echocardiographic datasets gives new insights into the morphology of subaortic stenosis. EUROPEAN JOURNAL OF ECHOCARDIOGRAPHY 2008; 9:614-20. [DOI: 10.1093/ejechocard/jen008] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Croccia MG, Levantino M, Guarracino F, Bortolotti U. Discrete subaortic stenosis associated with calcific aortic stenosis in the elderly. J Cardiovasc Med (Hagerstown) 2007; 8:971-2. [PMID: 17906491 DOI: 10.2459/jcm.0b013e3280122c57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Maria Grazia Croccia
- Division of Cardiac Surgery, Cardiothoracic Department, University of Pisa Medical School, Via Paradisa 2, Pisa, Italy
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23
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Geva A, McMahon CJ, Gauvreau K, Mohammed L, del Nido PJ, Geva T. Risk factors for reoperation after repair of discrete subaortic stenosis in children. J Am Coll Cardiol 2007; 50:1498-504. [PMID: 17919571 DOI: 10.1016/j.jacc.2007.07.013] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2007] [Revised: 05/30/2007] [Accepted: 07/01/2007] [Indexed: 10/22/2022]
Abstract
OBJECTIVES This study aimed to identify independent predictors of reoperation after successful resection of discrete subaortic stenosis (DSS). BACKGROUND Recurrence of DSS has been reported to range from 0% to 55% of patients. Factors associated with recurrence have not been adequately defined. METHODS Patients were included if they had a diagnosis of DSS, normal segmental cardiac anatomy, previous resection of DSS, and at least 36 months' follow-up. Demographic, surgical, and echocardiographic data were analyzed. Primary outcome was repeat resection of DSS in patients after successful primary resection. RESULTS Of 111 subjects who had successful surgical resection of DSS, 16 patients (14%) required reoperation. Median follow-up time was 8.2 years. Form of DSS and gender did not differ significantly between those with reoperation and those without. In multivariate analysis, independent predictors of reoperation that would be available before first surgery were <6 mm distance between the aortic valve (AoV) and the obstruction (hazard ratio [HR] 5.1; p = 0.013) and peak gradient by Doppler > or =60 mm Hg (HR 4.2; p = 0.016). If intraoperative variables are also considered, peeling of the membrane from the AoV or mitral valve at first surgery, <6 mm distance between the DSS and AoV, and peak gradient by Doppler > or =60 mm Hg were independent predictors of reoperation. CONCLUSIONS Proximity of the obstructive lesion to the AoV and severe obstruction determined by preoperative echocardiography, as well as involvement of valve leaflets requiring surgical peeling, predict recurrent DSS requiring reoperation.
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Affiliation(s)
- Alon Geva
- Department of Cardiology, Children's Hospital Boston, and Harvard Medical School, Boston, Massachusetts 02115, USA
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Hraska V, Photiadis J, Arenz C. Surgery for subvalvar aortic stenosis - resection of discrete subvalvar aortic membrane. Multimed Man Cardiothorac Surg 2007; 2007:mmcts.2006.002303. [PMID: 24414448 DOI: 10.1510/mmcts.2006.002303] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Discrete subvalvar aortic membrane is characterized by a fibromuscular shelf located at the area of aortomitral continuity with the extension toward the interventricular septum. As compared to other congenital heart defects, discrete subvalvar aortic membrane is virtually never recognized in early infancy, but appears to be an 'acquired' lesion, typically seen in patients with a more acute angle between the long axis of the left ventricle and the aorta. This angulation leads to imbalance in shear forces, which causes the proliferation of tissue that forms the membrane. The surgical intervention is considered when the gradient across the left ventricular outflow tract is 30 mmHg or more. Surgery is also advocated in infants and children in the presence of aortic regurgitation even when there is no significant gradient. The circumferential excision of the fibrous ridge with septal myectomy is safe and provides efficient relief of obstruction. Aggressive resection of all structures causing flow turbulence and removal of pathological tissue from the valve leaflets might prevent development or progression of aortic regurgitation and might eliminate the substrate for recurrent obstruction. Nevertheless, recurrence still remains a problem, especially in the presence of a predisposing associated congenital heart defect.
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Affiliation(s)
- Viktor Hraska
- Department of Pediatric Cardiac Surgery, German Pediatric Heart Center, Asklepios Clinic Sankt Augustin, Arnold Janssen Str. 29, 53757 Sankt Augustin, Germany
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Zannini L, Borini I. State of the art of cardiac surgery in patients with congenital heart disease. J Cardiovasc Med (Hagerstown) 2007; 8:3-6. [PMID: 17255808 DOI: 10.2459/01.jcm.0000247427.44204.0d] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
During the last 20 years, pediatric cardiac surgery has been characterized by important changes, with reductions in surgical mortality and the achievement of complete repair at an earlier age, thus avoiding multiple procedures and strongly ameliorating the global outcome of these patients. In this review, we describe the actual trends in the surgical treatment of cardiac malformations. We analyze two groups of patients: in the first group (septal defects, tetralogy of Fallot, transposition of the great arteries, aortic stenosis and coarctation) the indications are well established and the goal is represented by a lessening of the surgical trauma and post-operative morbidity, with stable results in the follow-up. In the second group (univentricular heart, pulmonary atresia and intact ventricular septum, double discordance, conduit, hypoplastic left heart syndrome), the lesions are still considered complex and submitted to ongoing experimental and clinical research, in order to improve the post-surgical history of these diseases.
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Affiliation(s)
- Lucio Zannini
- Division of Pediatric Cardiac Surgery, IRCCS Giannina Gaslini, Genoa, Italy.
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Tanaka H, Okada K, Yamshita T, Nakagiri K, Matsumori M, Okita Y. Accessory mitral valve causing left ventricular outflow tract obstruction and mitral insufficiency. J Thorac Cardiovasc Surg 2006; 132:160-1. [PMID: 16798322 DOI: 10.1016/j.jtcvs.2006.01.062] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2006] [Accepted: 01/20/2006] [Indexed: 11/17/2022]
Affiliation(s)
- Hiroshi Tanaka
- Kobe University Hospital, Department of Cardiovascular, Thoracic, and Pediatric Surgery, Kobe, Japan.
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Turan AA, Guven T, Karayel F, Pakis I, Gurpinar K, Ozaslan A. Subvalvular aortic stenosis as a cause of sudden death: two case reports. Am J Forensic Med Pathol 2006; 27:90-2. [PMID: 16501359 DOI: 10.1097/01.paf.0000203301.96511.f7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Sudden death is defined as a death that occurs suddenly, develops during an unpredictable course, and is due to natural or unnatural causes. Although there is no universally standardized definition on how "sudden" a sudden death is, WHO defines sudden death as a death that occurs within 24 hours after the onset of symptoms. The aim of this study is to present 2 rarely reported autopsy cases and to emphasize the importance of systemic autopsy at sudden death. On macroscopic examination, crescent-shaped, thick, fibrous membranes, located 5 mm and 3 mm away from the aortic valves, were detected. Fibrous membranes extended from the ventricular septum to the left ventricular outflow tract, thus apparently narrowing this region. Left ventricular wall and septum were slightly thickened, and there were scattered grayish-white areas of a small diameter. These became more intense in the septum and myocardium of the left ventricle on the anterior plane of the myocardial sections. In both cases, the aortic valves of were thickened and also markedly narrowed on one of them. In this case, the fibrous membrane adhered to the aortic valve and extended to the anterior leaflet of the mitral valve at one side. Both aortic valves comprised 3 leaflets. Other valves and coronary arteries showed no macroscopic pathologic findings. Microscopic examination of both cases demonstrated that the fibrous membrane comprising abundant collagen fibers was situated on the ventricular septum. Hypertrophy, moderate to severe interstitial fibrosis, and focal areas of scarring were observed in the specimens taken from the septal and ventricular myocardium. No abnormality was found on the conduction system examinations. Toxicologic analysis results in blood were negative. Based on the findings, membranous-type (discrete type) subvalvular aortic stenosis, diagnosed during the autopsy, was considered as the cause of sudden death in both cases.
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Freedom RM, Yoo SJ, Russell J, Perrin D, Williams WG. Thoughts about fixed subaortic stenosis in man and dog. Cardiol Young 2005; 15:186-205. [PMID: 15845164 DOI: 10.1017/s1047951105000399] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Robert M Freedom
- Department of Paediatrics, Division of Cardiology, The Hospital for Sick Children, University of Toronto, Tornto M5G 1X8, Canada.
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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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