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Khajali Z, Sayyadi A, Firouzi A, Aliramezany M. Percutaneous closure of an atrial septal defect in adult patients with congenitally corrected transposition of the great arteries. Cardiol Young 2023; 33:1479-1486. [PMID: 36776113 DOI: 10.1017/s1047951123000070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
Congenitally corrected transposition of great arteries is a rare anomaly which are responsible for 0.5% of all CHDs and can be associated with other congenital cardiac abnormalities. Association of congenitally corrected transposition of great arteries and isolated atrial septal defect is a very rare condition, and management of this association is challenging. In this paper, we describe three patients with congenitally corrected transposition of great arteries and isolated atrial septal defect who were admitted to our clinic and all of them underwent percutaneous closure of defect. From 2017 to 2020, we visited three patients with congenitally corrected transposition of great arteries and isolated atrial septal defect. Our patients' ages ranged from 28 to 38 years. All of them underwent percutaneous atrial septal defect device closure without any complications. Patients were discharged from hospital in good condition with a daily dose of Aspirin 80 mg and Plavix 75 mg. For all of them, follow-up echocardiography was performed the day after the procedure at 1, 3, and 6 months later and showed the function of the right-sided left ventricle improvement and the severity of the mitral regurgitation was reduced. Furthermore, clinical evaluation also indicated functional class improvement. Although the cases of percutaneous transcatheter closure are few and cannot be regarded as strong evidence to recommend this procedure, the outcomes are promising and can demonstrate that this approach is practical.
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Affiliation(s)
- Zahra Khajali
- Cardiology, Rajaie Cardiovascular Medical and Research Center, Iran
| | - Amin Sayyadi
- Student Research Committee, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
| | - Atta Firouzi
- Cardiology, Rajaie Cardiovascular Medical and Research Center, Iran
| | - Maryam Aliramezany
- Cardiovascular Research Center, Institute of Basic and Clinical Physiology Sciences, Kerman University of Medical Sciences, Kerman, Iran
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Di Santo M, Stelmaszewski EV, Dilascio M, Barreta J, Garcia Delucis P, Cornelis J, Villa A. Congenitally corrected transposition of the great arteries outcomes of different surgical techniques in a paediatric population: A single-centre report. Cardiol Young 2022; 33:1-7. [PMID: 35864576 DOI: 10.1017/s1047951122002177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Congenitally corrected transposition of the great arteries is a complex pathology characterised by atrioventricular and ventriculo-arterial discordance. Optimal surgical approaches are still a matter of debate. OBJECTIVE To evaluate the outcomes of different surgical treatments in a single centre. METHODS Between 1998 and 2020, 89 patients were studied. The cohort was divided into three groups: physiologic, anatomic, and univentricular repair. RESULT Physiologic correction (56.18%) was associated with significant tricuspid valve regurgitation progress (42%) and complete AV block (30%) compared to anatomic repair. Right ventricular systolic dysfunction was developed in 14%. Instead, anatomic correction (30.34%) (double switch 59% and Rastelli type 40.7%) presented moderate to severe aortic regurgitation (4%) and left ventricular systolic dysfunction (11%). Complete AV block was developed in 14.8%. Rate of reintervention was 34% for physiologic and 26% for anatomic. Univentricular palliation (13.8%) presented no complications or late mortality during the follow-up. The overall survival at 5 and 10 years, respectively, was 80% (95% CI 69, 87) and 75% (95% CI 62, 84). There was no statistically significant difference in mortality between the groups (p log-rank = 0.5752). CONCLUSION Management of congenitally corrected transposition of the great arteries remains a challenge. In this cohort, outcomes after physiologic repair were satisfactory in spite of the progression of tricuspid regurgitation and the high incidence of AV block. Anatomic repair improved tricuspid regurgitation but increased the risk of aortic regurgitation and left ventricular systolic dysfunction. The Fontan group showed the lowest incidence of complications.
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Affiliation(s)
- Marisa Di Santo
- Department of Cardiology, Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina
| | - Erica V Stelmaszewski
- Department of Cardiology, Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina
| | - Mauricio Dilascio
- Department of Cardiology, Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina
| | - Jorge Barreta
- Department of Cardiovascular Surgery, Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina
| | - Pablo Garcia Delucis
- Department of Cardiovascular Surgery, Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina
| | - Javier Cornelis
- Department of Cardiovascular Surgery, Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina
| | - Alejandra Villa
- Department of Cardiology, Hospital de Pediatría J.P. Garrahan, Buenos Aires, Argentina
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Miller JR, Sebastian V, Eghtesady P. Management Options for Congenitally Corrected Transposition: Which, When, and for Whom? Semin Thorac Cardiovasc Surg Pediatr Card Surg Annu 2022; 25:38-47. [PMID: 35835515 DOI: 10.1053/j.pcsu.2022.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 02/03/2022] [Accepted: 04/04/2022] [Indexed: 11/11/2022]
Abstract
Management strategies for congenitally corrected transposition of the great arteries (ccTGA) historically consisted of a physiologic repair, resulting in the morphologic right ventricle (mRV) supporting systemic circulation. This strategy persisted despite the development of heart failure by middle age because of the reasonable short-term outcomes, and the natural history of some patients with favorable anatomy (felt to demonstrate the mRV's ability to function in the long-term), and due to the less-than-optimal outcomes associated with anatomical repair. As outcomes with anatomical repair improved, and the long-term risk of systemic mRV dysfunction became apparent, more have begun to realize its advantages. In addition to the decision on whether or not to pursue anatomical repair, and the optimal timing, studies demonstrating the nuance to morphologic left ventricle retraining have demonstrated its feasibility. Further considerations in ccTGA have begun to be better understood, including: the management of a poorly functioning mRV, systemic tricuspid valve regurgitation, the utility of morphologic left ventricle outflow tract obstruction (native or surgically created) and pacing strategies. While some considerations are apparent: biventricular pacing is superior to univentricular, tricuspid regurgitation must be managed early with either progression towards anatomical repair (pulmonary artery banding if needed for retraining) or tricuspid replacement (not repair) based on the patient's age; others remain to be completely elucidated. Overall, the heterogeneity of ccTGA, as well as the unique presentation with each patient regarding ventricular and valvular function and center-to-center variability in management strategies has made the interpretation of published data difficult. That said, more recent long-term outcomes favor anatomical repair in most situations.
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Affiliation(s)
- Jacob R Miller
- Washington University in St. Louis School of Medicine/St. Louis Children's Hospital, St. Louis, Missouri
| | - Vinod Sebastian
- Washington University in St. Louis School of Medicine/St. Louis Children's Hospital, St. Louis, Missouri
| | - Pirooz Eghtesady
- Washington University in St. Louis School of Medicine/St. Louis Children's Hospital, St. Louis, Missouri.
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Ferrero P, Chessa M, Varrica A, Giamberti A. A case report of late physiologic repair of congenitally corrected transposition of the great arteries and pulmonary stenosis in a severely cyanotic patient: better late than never. Eur Heart J Case Rep 2022; 6:ytab523. [PMID: 35047748 PMCID: PMC8759476 DOI: 10.1093/ehjcr/ytab523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/13/2021] [Accepted: 12/22/2021] [Indexed: 11/25/2022]
Abstract
Background Patients with congenitally corrected transposition of great arteries (ccTGA) not infrequently seek medical attention for the first time late in life. Optimal management of natural history ccTGA is debated and must be tailored. Case summary A 38-year-old male patient was referred to our centre because of severe cyanosis and worsening dyspnoea. Investigations disclosed situs solitus, mesocardia, double discordance, large ventricular septal defect (VSD), severe pulmonary stenosis, and no significant atrio-ventricular valves regurgitation. The patient underwent physiologic repair: VSD closure, placement of a left ventricle to pulmonary artery conduit, and epicardial atrio-biventricular pacemaker implantation. The conduit was intentionally undersized to promote tricuspid valve continence. Post-operative course was uneventful, transthoracic echocardiography showed good biventricular function without significant tricuspid regurgitation. At 1 month after discharge, the patient is in New York Heart Association Class II. Discussion Management of late presenter patients with ccTGA depends on the associated lesion and estimation of surgical risk. In selected patients markedly symptomatic physiologic repair is a rationale option, providing a normal saturation and biventricular circulation with a significantly lower surgical risk as compared with an anatomic repair.
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Affiliation(s)
- Paolo Ferrero
- ACHD Unit—Pediatric and Adult Congenital Heart Centre IRCCS-Policlinico San Donato, San Donato Milanese, Milan, Italy
| | - Massimo Chessa
- ACHD Unit—Pediatric and Adult Congenital Heart Centre IRCCS-Policlinico San Donato, San Donato Milanese, Milan, Italy
| | - Alessandro Varrica
- Pediatric and Congenital Cardiac Surgery, IRCCS-Policlinico San Donato, Milano, Italy
| | - Alessandro Giamberti
- Pediatric and Congenital Cardiac Surgery, IRCCS-Policlinico San Donato, Milano, Italy
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Ma K, Qi L, Hua Z, Yang K, Zhang H, Li S, Zhang S, He F, Wang G. Effectiveness of Bidirectional Glenn Shunt Placement for Palliation in Complex Congenitally Corrected Transposed Great Arteries. Tex Heart Inst J 2020; 47:15-22. [PMID: 32148447 DOI: 10.14503/thij-17-6555] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Surgery for complex congenitally corrected transposed great arteries is one of the greatest challenges in cardiovascular surgery. We report our experience with bidirectional Glenn shunt placement as a palliative procedure for complex congenitally corrected transposition. We retrospectively identified 50 consecutive patients who had been diagnosed with congenitally corrected transposition accompanied by left ventricular outflow tract obstruction and ventricular septal defect and who had then undergone palliative bidirectional Glenn shunt placement at our institution from January 2005 through December 2014. Patients were divided into 3 groups according to subsequent surgeries: Fontan completion (total cavopulmonary connection, 13 patients) (group 1), anatomic repair (hemi-Mustard and Rastelli procedures without Glenn takedown, 11 patients) (group 2), and prolonged palliation (no further surgery, 26 patients) (group 3). After shunt placement, no patient died or had ventricular dysfunction. Overall, mean oxygen saturation increased significantly from 79.5% ± 13.5% preoperatively to 94.1% ± 7.3% (P <0.001). The median time from shunt placement to Fontan completion and anatomic repair, respectively, was 2.1 years (range, 1.6-5.2 yr) and 1.1 years (range, 0.6-2.4 yr). Only 2 late deaths occurred, both in group 1. In group 3, time from shunt placement to latest follow-up was 4.5 years (range, 2.3-8 yr). At latest follow-up, mean oxygen saturation was 91.6% ± 10.3%, and no patients had impaired ventricular function. Bidirectional Glenn shunt placement as an optional palliative procedure for complex congenitally corrected transposition has favorable outcomes. Later, patients can feasibly be treated by Fontan completion or anatomic repair. Use of a bidirectional Glenn shunt for open-ended palliation is also acceptable.
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Kitamura H, Okawa Y, Maeda M. A porcine prosthetic valve preserved for 28 years within a severely stenotic Rastelli conduit. Chirurgia (Bucur) 2020. [DOI: 10.23736/s0394-9508.18.04897-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Sachdeva S, Jacobsen RM, Woods RK, Mitchell ME, Cava JR, Ghanayem NS, Frommelt PC, Bartz PJ, Tweddell JS. Anatomic Repair of Congenitally Corrected Transposition of the Great Arteries: Single-Center Intermediate-Term Experience. Pediatr Cardiol 2017; 38:1696-1702. [PMID: 28918529 DOI: 10.1007/s00246-017-1715-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 08/31/2017] [Indexed: 01/15/2023]
Abstract
We present our experience for patients who have undergone an anatomic repair (AR) for congenitally corrected transposition of the great arteries (CCTGA) at the Children's Hospital of Wisconsin. A retrospective chart review of patients who underwent AR for CCTGA from 2001 to 2015 was performed. The cohort consisted of 15 patients (74% male). Median age of anatomic repair was 15 months (range 4.5-45.6 months). Four patients had a bidirectional Glenn (BDG) prior to AR. At the time of AR,-9 (60%) underwent Senning/Rastelli procedure, 4 (26.6%) had double switch operation, and 2 (13.3%) underwent only Senning with VSD closure. Median duration of follow-up was 5.5 years (0.05-14 years). Reoperations prior to discharge included BDG, revision of pulmonary venous baffle, closure of residual VSD, and pacemaker placement. Late reoperations included left ventricular outflow tract obstruction repair, conduit replacement, melody valve placement, and pacemaker implantation. At their most recent follow-up, no patient had heart failure symptoms and only 1 had severely diminished function that improved with cardiac resynchronization therapy. Moderate mitral regurgitation was noted in 15% (2/13), and severe in 7% (1/13). Moderate tricuspid regurgitation was noted in 15% (2/13). One patient, 7% (1/13), developed moderate aortic insufficiency. There was a 100% survival at the time of the most recent follow-up. Patients with CCTGA who have undergone AR have excellent functional status and mid-term survival but reinterventions are common. Longer term studies are needed to determine both the extent and spectrum of reinterventions as well as long term survival.
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Affiliation(s)
| | | | | | | | - Joseph R Cava
- Children's Hospital of Wisconsin, Milwaukee, WI, USA
| | | | | | - Peter J Bartz
- Children's Hospital of Wisconsin, Milwaukee, WI, USA
| | - James S Tweddell
- Cincinnati Children's Hospital Medical Center, University of Cincinnati, 3333 Burnet Ave, Cincinnati, OH, 45229, USA.
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Moodley S, Balasubramanian S, Tacy TA, Chan F, Hanley FL, Punn R. Echocardiography-Derived Left Ventricular Outflow Tract Gradient and Left Ventricular Posterior Wall Thickening Are Associated with Outcomes for Anatomic Repair in Congenitally Corrected Transposition of the Great Arteries. J Am Soc Echocardiogr 2017; 30:807-814. [PMID: 28579248 DOI: 10.1016/j.echo.2017.03.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Indexed: 01/04/2023]
Abstract
BACKGROUND Congenitally corrected transposition of the great arteries is a rare form of congenital heart disease. Management is controversial; options include observation, physiologic repair, and anatomic repair. Assessment of morphologic left ventricle preparedness is key in timing anatomic repair. This study's purpose was to review the modalities used to assess the morphologic left ventricle preoperatively and to determine if any echocardiographic variables are associated with outcomes. METHODS A retrospective review of patients with congenitally corrected transposition of the great arteries eligible for anatomic repair at Lucile Packard Children's Hospital from 2000 to 2016 was conducted. Inclusion criteria were (1) presurgical echocardiography, magnetic resonance imaging, and cardiac catheterization and (2) clinical follow-up information. Echocardiographic measurements included left ventricular (LV) single-plane Simpson's ejection fraction, LV eccentricity index, LV posterior wall thickening, pulmonary artery band (PAB)/LV outflow tract (LVOT) pressure gradient, and LV and right ventricular strain. Magnetic resonance imaging measurements included LV mass, ejection fraction, eccentricity index, and LV thickening. LV pressure, PAB/LVOT gradient, right ventricular pressure, pulmonary vascular resistance, and Qp/Qs constituted catheterization data. Outcomes included achieving anatomic repair within 1 year of assessment in patients with LVOT obstruction or within 1 year of pulmonary artery banding and freedom from death, transplantation, or heart failure at last follow-up. RESULTS Forty-one patients met the inclusion criteria. PAB/LVOT gradients of 85.2 ± 23.4 versus 64.0 ± 32.1 mm Hg (P = .0282) by echocardiography and 60.1 ± 19.4 versus 35.9 ± 18.9 mm Hg (P = .0030) by catheterization were associated with achieving anatomic repair and freedom from death, transplantation, and heart failure. Echocardiographic LV posterior wall thickening of 35.4 ± 19.8% versus 20.6 ± 15.0% (P = .0017) and MRI LV septal wall thickening of 37.1 ± 18.8% versus 19.3 ± 18.8% (P = .0306) were associated with achieving anatomic repair. Inter- and intraobserver variability for echocardiographic measurements was very good. CONCLUSIONS PAB/LVOT gradient and LV posterior wall thickening are highly reproducible echocardiographic measurements that reflect morphologic LV performance and can be used in assessing patients with congenitally corrected transposition of the great arteries undergoing anatomic repair.
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Affiliation(s)
- Shreya Moodley
- Division of Cardiology, Lucile Packard Children's Hospital, Stanford University School of Medicine, Palo Alto, California.
| | - Sowmya Balasubramanian
- Division of Cardiology, Lucile Packard Children's Hospital, Stanford University School of Medicine, Palo Alto, California
| | - Theresa A Tacy
- Division of Cardiology, Lucile Packard Children's Hospital, Stanford University School of Medicine, Palo Alto, California
| | - Frandics Chan
- Division of Cardiology, Lucile Packard Children's Hospital, Stanford University School of Medicine, Palo Alto, California
| | - Frank L Hanley
- Division of Cardiology, Lucile Packard Children's Hospital, Stanford University School of Medicine, Palo Alto, California
| | - Rajesh Punn
- Division of Cardiology, Lucile Packard Children's Hospital, Stanford University School of Medicine, Palo Alto, California
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De León LE, Mery CM, Verm RA, Trujillo-Díaz D, Patro A, Guzmán-Pruneda FA, Adachi I, Heinle JS, Kane LC, McKenzie ED, Fraser CD. Mid-Term Outcomes in Patients with Congenitally Corrected Transposition of the Great Arteries: A Single Center Experience. J Am Coll Surg 2017; 224:707-715. [PMID: 28088601 DOI: 10.1016/j.jamcollsurg.2016.12.029] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Accepted: 12/15/2016] [Indexed: 12/18/2022]
Abstract
BACKGROUND Optimal management of patients with congenitally corrected transposition of the great arteries (ccTGA) is unclear. The goal of this study was to compare the outcomes in patients with ccTGA undergoing different management strategies. STUDY DESIGN Patients with ccTGA believed suitable for biventricular circulation, treated between 1995 and 2016, were included. The cohort was divided into 4 groups: systemic right ventricle (RV) (patients without surgical intervention or with a classic repair), anatomic repair, Fontan palliation, and patients receiving only a pulmonary artery band (PAB) or a shunt. Transplant-free survival from presentation was calculated for each group. RESULTS The cohort included 97 patients: 45 (46%) systemic RV, 26 (27%) anatomic repair, 9 (9%) Fontan, and 17 (18%) PAB/shunt. Median age at presentation was 2 months (range 0 days to 69 years) and median follow-up was 10 years (1 month to 28 years). At initial presentation, 10 (11%) patients had any RV dysfunction (8 mild, 2 severe), and 16 (18%) patients had moderate or severe tricuspid regurgitation (TR). During the study, 10 (10%) patients died, and 3 (3%) patients underwent transplantation. At last follow-up, 11 (11%) patients were in New York Heart Association class III/IV, 5 (5%) had moderate or severe systemic ventricle dysfunction, and 16 (16%) had moderate or severe systemic atrioventricular valve regurgitation. Transplant-free survivals at 10 years were 93%, 86%, 100%, and 79% for systemic RV, anatomic repair, Fontan palliation, and PAB/shunt, respectively (p = 0.33). On multivariate analysis, only systemic RV dysfunction was associated with a higher risk for death or transplant (p = 0.001). CONCLUSIONS Transplant-free survival in ccTGA appears to be similar between patients with a systemic RV, anatomic repair, and Fontan procedure. Systemic RV dysfunction is a risk factor for death and transplant.
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Affiliation(s)
- Luis E De León
- Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX.
| | - Carlos M Mery
- Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Raymond A Verm
- Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Daniel Trujillo-Díaz
- Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Ankita Patro
- Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Francisco A Guzmán-Pruneda
- Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Iki Adachi
- Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Jeffrey S Heinle
- Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Lauren C Kane
- Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - E Dean McKenzie
- Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
| | - Charles D Fraser
- Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, and Michael E DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX
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Anatomical repair of congenitally corrected transposition in the fifth decade of life. Indian Heart J 2016; 68 Suppl 2:S57-S59. [PMID: 27751329 PMCID: PMC5067768 DOI: 10.1016/j.ihj.2016.02.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 02/25/2016] [Accepted: 02/28/2016] [Indexed: 11/24/2022] Open
Abstract
Successful repair of congenitally corrected transposition with ventricular septal defect and pulmonary stenosis presenting with heart failure in the fifth decade of life is described. This is the oldest patient to undergo this surgery, as per existing literature.
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Long-term results after physiologic repair for congenitally corrected transposition of the great arteries. Gen Thorac Cardiovasc Surg 2016; 64:715-721. [DOI: 10.1007/s11748-016-0689-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 07/11/2016] [Indexed: 11/26/2022]
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Ilin AS, Teplov PV, Sakovich VA, Ohye RG. Surgical technique of double switch procedure: Senning with arterial switch operation for congenitally corrected transposition of the great arteries with ventricular septal defect. Multimed Man Cardiothorac Surg 2016; 2016:mmw007. [PMID: 27188446 DOI: 10.1093/mmcts/mmw007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2015] [Accepted: 03/03/2016] [Indexed: 11/14/2022]
Abstract
We present a case of 12-month-old boy with congenitally corrected transposition of great arteries with L-looped ventricles and L-transposition of great arteries and ventricular septal defect. When admitted to the hospital, the patient had the appearance of congestive heart failure due to moderate to severe tricuspid valve regurgitation and right ventricle dysfunction. The pulmonary artery (PA) banding was required first because of low systolic pressure in the morphological left ventricle less than 70% confirmed by catheterization. Three months later, the patient appeared to be a good candidate for anatomical repair and a double switch procedure-Senning with arterial switch-was performed. The early postoperative period was relatively smooth and uneventful. Tricuspid valve insufficiency was resolved immediately after surgery. Mild systolic dysfunction of the left ventricle with mild mitral insufficiency was confirmed by the 2D strain method of echocardiography on the second day of the postoperative period and it improved over the next 21 days. Thirty days later after the procedure, the patient underwent catheterization of his superior vena cava tunnel because of the slightly increased blood flow velocity diagnosed by echocardiography. In 3 months after the surgery, the boy was asymptomatic and was doing well. The patient's functional status was I according to the NYHA classification.
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Affiliation(s)
- Alexey S Ilin
- Department of Congenital Heart Surgery, The Federal Center of Cardiovascular Surgery, Krasnoyarsk, Russian Federation
| | - Pavel V Teplov
- Department of Congenital Heart Surgery, The Federal Center of Cardiovascular Surgery, Krasnoyarsk, Russian Federation
| | - Valeriy A Sakovich
- Department of Congenital Heart Surgery, The Federal Center of Cardiovascular Surgery, Krasnoyarsk, Russian Federation
| | - Richard G Ohye
- Section of Pediatric Cardiovascular Surgery, C.S. Mott Children's Hospital, MI, Ann Arbor, USA
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Long-term outcome and anaesthetic management for non-cardiac surgery after Fontan palliation: a single-centre retrospective analysis. Cardiol Young 2015; 25:1148-54. [PMID: 25245855 DOI: 10.1017/s1047951114001814] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
OBJECTIVES The improved management of Fontan patients has resulted in good outcome. As such, these patients may necessitate care for non-cardiac surgery. We sought to determine the long-term outcome of our Fontan series palliated with the most recent surgical techniques. Our second objective was to report the incidence and the perioperative course after non-cardiac procedures. We reviewed the records of all patients with either a lateral tunnel or an extracardiac conduit Fontan between 1996 and 2008. Follow-up was recorded until June, 2013, including records regarding non-cardiac interventions. RESULTS Overall, 58 patients were included. Of them, one patient underwent a takedown of his Fontan, and five patients died in the immediate postoperative course. The cumulative survival of the remaining 52 patients was 81%. There was no significant difference in survival between right and left ventricle morphologies (p=0.56), nor between both types of Fontan (p=0.9). Chronic arrhythmias (25%), fatigue/dyspnoea (40%), thrombotic complications (19%), and embolic events (10%) were among the most recurrent comorbidities. In total, 45 non-cardiac interventions were performed on 26 patients, with three bleeding complications and one death. CONCLUSIONS This study shows excellent long-term survival after both lateral tunnel and extracardiac conduit Fontan. The incidence of cardiovascular morbidity remains high, however. We also report a high number of non-cardiac interventions. Thorough understanding of the Fontan physiology is mandatory when non-cardiac anaesthesiologists are in charge of these patients.
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Anatomic repair for corrected transposition with left ventricular outflow tract obstruction. Ann Thorac Surg 2013; 96:611-20. [PMID: 23743063 DOI: 10.1016/j.athoracsur.2013.03.095] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Revised: 02/22/2013] [Accepted: 03/07/2013] [Indexed: 12/23/2022]
Abstract
BACKGROUND We investigated the long-term outcomes of anatomic repair for congenitally corrected transposition of great arteries (ccTGA) and its variant associated with left ventricular outflow tract obstruction (LVOTO) and ventricular septal defect (VSD). METHODS From 1987 to 2011, 47 patients (27 with pulmonary atresia and 20 with pulmonary stenosis) with ccTGA and its variant associated with LVOTO and VSD underwent anatomic repair. The mean operative age was 5.5 ± 3.7 years old (range, 1.6 to 21.3). The preoperative right ventricular end-diastolic volume was 133% ± 31% (81 to 222) of their normal size. The atrial switch procedure was Mustard in 31 patients and Senning in 16, with the latter used in all from 2002. RESULTS The mean follow-up period was 11.6 ± 7.3 years (maximum, 22.7). The VSD was concomitantly enlarged in 4 patients and Damus-Kaye-Stansel (DKS) anastomosis was added in 9 patients with pulmonary stenosis and restrictive VSD. The overall survival rate at 20 years was 70.2% and no mortality has been observed in 21 consecutive patients since 1997. No patient required reoperation for the postoperative systemic ventricular outflow tract obstruction. A surgical heart block developed in 1 patient (2.1%) who underwent concomitant VSD enlargement. None of the patients developed a moderate or greater aortic or neo-aortic regurgitation. CONCLUSIONS Recent outcomes after anatomic repair for congenitally corrected transposition of great arteries associated with LVOTO and VSD were excellent. For patients with pulmonary stenosis and restrictive VSD, additional DKS anastomosis seems to be an effective approach to avoid postoperative systemic ventricular outflow tract obstruction and surgical heart block.
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Hopkins WE. Right ventricular performance in congenital heart disease: a physiologic and pathophysiologic perspective. Cardiol Clin 2012; 30:205-18. [PMID: 22548812 DOI: 10.1016/j.ccl.2012.03.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Underappreciated is the fact that the right ventricle is often the primary determinant of long-term morbidity and mortality in patients with congenital heart disease. Right ventricular performance in these patients depends on a unique set of physiologic and pathophysiologic factors that are rarely considered in acquired heart disease. This article explores this unique physiology and pathophysiology in the hope that it will enhance understanding of a wide variety of congenital cardiac anomalies.
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Affiliation(s)
- William E Hopkins
- Department of Medicine and Cardiology Unit, Pulmonary Hypertension and Adult Congenital Heart Disease Programs, Fletcher Allen Health Care, University of Vermont College of Medicine, McClure 1, MCHV Campus, 111 Colchester Avenue, Burlington, VT 05401, USA.
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16
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Sojak V, Kuipers I, Koolbergen D, Rijlaarsdam M, Hruda J, Blom N, Hazekamp M. Mid-term results of bidirectional cavopulmonary anastomosis and hemi-Mustard procedure in anatomical correction of congenitally corrected transposition of the great arteries. Eur J Cardiothorac Surg 2012; 42:680-4. [PMID: 22402454 DOI: 10.1093/ejcts/ezs055] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES The Senning or Mustard procedure combined with the arterial switch operation (ASO) (± VSD and no left ventricular (LV) outflow tract obstruction) or the Rastelli operation (VSD and LV outflow tract obstruction) has become the preferred strategy over conventional repair as it is thought to prevent long-term dysfunction of the right ventricle (RV). More recently, hemi-Mustard rerouting of blood from the inferior vena cava to the RV in combination with bidirectional cavopulmonary anastomosis (BCPA) has been adopted by some centres for potential benefits over the classic atrial switch procedure. The aim of this study was to analyse our experience with hemi-Mustard and BCPA as part of an anatomical repair of congenitally corrected transposition of the great arteries (CCTGA) in selected patients. METHODS Between 2004 and 2011, eight patients underwent hemi-Mustard/BCPA with the Rastelli operation (n = 6) or ASO (n = 2). The median age was 2.9 (range: 1.2-9.1) years. Positional anomalies were present in 75% of the patients. Both patients with ASO had dysplastic and insufficient tricuspid valves. In the Rastelli group, four patients had previously received shunts followed by BCPA in one patient. In the ASO group, both patients underwent pulmonary artery banding initially. RESULTS There was one in-hospital death and no late mortality. Two patients received a pacemaker. One patient from the Rastelli group required conduit change 6 years later. At the mean follow-up of 4.5 years, six and one patients are in NYHA classes I and II, respectively; six patients showed good biventricular function, while one had LV dysfunction. Systemic venous obstruction and sinus node dysfunction were not observed, and BCPA was functioning well in all patients. CONCLUSIONS Hemi-Mustard/BCPA is useful in anatomical repair of CCTGA in selected patients. When compared with the classic atrial switch operation, it is technically easier which makes it especially helpful in atrio-apical discordance; it unloads an RV with limited size or function, and avoids complications related to the upper limb of the classic atrial switch procedure. Mid-term results of this approach are favourable. Further follow-up is needed to prove long-term benefits.
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Affiliation(s)
- Vladimir Sojak
- Department of Cardiothoracic Surgery, Leiden University Medical Center, Leiden, Netherlands.
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17
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Shinbane JS, Shriki J, Hindoyan A, Ghosh B, Chang P, Farvid A, Saxon LA, Cao M, Cesario D, Takahashi M, Colletti PM, Wilcox A, Baker C, Starnes V. Unoperated Congenitally Corrected Transposition of the Great Arteries, Nonrestrictive Ventricular Septal Defect, and Pulmonary Stenosis in Middle Adulthood. World J Pediatr Congenit Heart Surg 2012; 3:123-9. [DOI: 10.1177/2150135111421625] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Submitted May 6, 2011; Accepted August 3, 2011. The survival into adulthood of patients with unoperated complex congenital heart disease with anomalies often considered life threatening in infancy and childhood requires a complex interplay of “balanced” defects allowing for cardiovascular physiology compatible with long-term survival. We report on a series of three cases from our advanced imaging database of middle-aged adults presenting with multiple similar defects providing a hemodynamically balanced circulation. The constellation of defects seen in each of these patients included congenitally corrected transposition of the great arteries, a large nonrestrictive ventricular septal defect, valvular pulmonary stenosis, and in two cases anomalous coronary arteries. Cardiovascular computed tomographic angiography (CCTA) and cardiovascular magnetic resonance imaging (CMR) were important to the characterization of the multiple defects and their three-dimensional relationships in these cases. Treatment decisions in patients with this constellation of findings are challenging, given the limited data due to the rarity of survival of patients with these defects into middle adulthood and the paucity of data related to decisions and approaches to medical management, surgical correction, or transplantation.
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Affiliation(s)
- Jerold S. Shinbane
- Division of Cardiovascular Medicine/Cardiovascular and Thoracic Institute, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Jabi Shriki
- Department of Radiology, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Antereas Hindoyan
- Division of Cardiovascular Medicine/Cardiovascular and Thoracic Institute, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Bobby Ghosh
- Division of Cardiovascular Medicine/Cardiovascular and Thoracic Institute, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Philip Chang
- Division of Cardiovascular Medicine/Cardiovascular and Thoracic Institute, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Ali Farvid
- Division of Cardiovascular Medicine/Cardiovascular and Thoracic Institute, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Leslie A. Saxon
- Division of Cardiovascular Medicine/Cardiovascular and Thoracic Institute, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Michael Cao
- Division of Cardiovascular Medicine/Cardiovascular and Thoracic Institute, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - David Cesario
- Division of Cardiovascular Medicine/Cardiovascular and Thoracic Institute, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Masato Takahashi
- Division of Cardiovascular Medicine/Cardiovascular and Thoracic Institute, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Patrick M. Colletti
- Department of Radiology, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Alison Wilcox
- Department of Radiology, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Craig Baker
- Division of Cardiovascular Medicine/Cardiovascular and Thoracic Institute, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Vaughn Starnes
- Division of Cardiovascular Medicine/Cardiovascular and Thoracic Institute, USC Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
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Romfh A, Pluchinotta FR, Porayette P, Valente AM, Sanders SP. Congenital Heart Defects in Adults : A Field Guide for Cardiologists. ACTA ACUST UNITED AC 2012. [PMID: 24294540 DOI: 10.4172/2155-9880.s8-007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Advances in cardiology and cardiac surgery allow a large proportion of patients with congenital heart defects to survive into adulthood. These patients frequently develop complications characteristic of the defect or its treatment. Consequently, adult cardiologists participating in the care of these patients need a working knowledge of the more common defects. Occasionally, patients with congenital heart defects such as atrial septal defect, Ebstein anomaly or physiologically corrected transposition of the great arteries present for the first time in adulthood. More often patients previously treated in pediatric cardiology centers have transitioned to adult congenital heart disease centers for ongoing care. Some of the more important defects in this category are tetralogy of Fallot, transposition of the great arteries, functionally single ventricle defects, and coarctation. Through this field guide, we provide an overview of the anatomy of selected defects commonly seen in an adult congenital practice using pathology specimens and clinical imaging studies. In addition, we describe the physiology, clinical presentation to the adult cardiologist, possible complications, treatment options, and outcomes.
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Affiliation(s)
- Anitra Romfh
- Department of Cardiology, Children's Hospital Boston, Boston, MA 02115, USA ; Division of Cardiovascular Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA
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Wallis GA, Debich-Spicer D, Anderson RH. Congenitally corrected transposition. Orphanet J Rare Dis 2011; 6:22. [PMID: 21569592 PMCID: PMC3116458 DOI: 10.1186/1750-1172-6-22] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2010] [Accepted: 05/14/2011] [Indexed: 12/27/2022] Open
Abstract
Congenitally corrected transposition is a rare cardiac malformation characterized by the combination of discordant atrioventricular and ventriculo-arterial connections, usually accompanied by other cardiovascular malformations. Incidence has been reported to be around 1/33,000 live births, accounting for approximately 0.05% of congenital heart malformations. Associated malformations may include interventricular communications, obstructions of the outlet from the morphologically left ventricle, and anomalies of the tricuspid valve. The clinical picture and age of onset depend on the associated malformations, with bradycardia, a single loud second heart sound and a heart murmur being the most common manifestations. In the rare cases where there are no associated malformations, congenitally corrected transposition can lead to progressive atrioventricular valvar regurgitation and failure of the systemic ventricle. The diagnosis can also be made late in life when the patient presents with complete heart block or cardiac failure. The etiology of congenitally corrected transposition is currently unknown, and with an increase in incidence among families with previous cases of congenitally corrected transposition reported. Diagnosis can be made by fetal echocardiography, but is more commonly made postnatally with a combination of clinical signs and echocardiography. The anatomical delineation can be further assessed by magnetic resonance imaging and catheterization. The differential diagnosis is centred on the assessing if the patient is presenting with isolated malformations, or as part of a spectrum. Surgical management consists of repair of the associated malformations, or redirection of the systemic and pulmonary venous return associated with an arterial switch procedure, the so-called double switch approach. Prognosis is defined by the associated malformations, and on the timing and approach to palliative surgical care.
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Affiliation(s)
- Gonzalo A Wallis
- Congenital Heart Center at the University of Florida, Gainesville, Florida, USA
| | - Diane Debich-Spicer
- University of Florida, Gainesville, Florida, USA
- The Congenital Heart Institute of Florida (CHIF), St. Petersburg, Florida, USA
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20
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Said SM, Burkhart HM, Schaff HV, Dearani JA. Congenitally Corrected Transposition of Great Arteries. World J Pediatr Congenit Heart Surg 2010; 2:64-79. [DOI: 10.1177/2150135110386977] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
In patients with congenitally corrected transposition of the great arteries, the main concern has been the long-term performance of the morphologic right ventricle in association with tricuspid valve regurgitation when it remains as the systemic ventricle. Deterioration in ventricular function can occur slowly over many years, even without associated cardiac anomalies or previous surgical interventions. This review summarizes the authors' experience and provides a thorough review of the literature addressing the management of the failing systemic right ventricle as well as the tricuspid valve regurgitation with congenitally corrected transposition. This includes different surgical options, the authors' preferred management algorithm, and the late outcome.
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Affiliation(s)
- Sameh M. Said
- Division of Cardiovascular Surgery, Mayo Clinic, Rochester, MN, USA
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21
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Bogers AJJC, Head SJ, de Jong PL, Witsenburg M, Kappetein AP. Long term follow up after surgery in congenitally corrected transposition of the great arteries with a right ventricle in the systemic circulation. J Cardiothorac Surg 2010; 5:74. [PMID: 20920167 PMCID: PMC2954981 DOI: 10.1186/1749-8090-5-74] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2010] [Accepted: 09/28/2010] [Indexed: 02/08/2023] Open
Abstract
Aim of the study To investigate the long-term outcome of surgical treatment for congenitally corrected transposition of the great arteries (CCTGA), in patients with biventricular repair with the right ventricle as systemic ventricle. Methods A total of 32 patients with CCTGA were operated between January 1972 and October 2008. These operations comprised 18 patients with a repair with a normal left ventricular outflow tract, 11 patients with a Rastelli repair of the left ventricle to the pulmonary artery and 3 patients with a cardiac transplantation. Results Excluding the cardiac transplantation patients, mean age at operation was 16 years (sd 15 years, range 1 week - 49 years). Median follow-up was 12 years (sd 10 years, range 7 days - 32 years). Survival obtained from Kaplan-Meier analysis at 20 years after surgery was 63% (CI 53-73%). For the non-Rastelli group these data at 20 years were 62% (CI 48-76%) and for the Rastelli group 67% (CI 51-83%). Freedom of reoperation at 20 years was 32% (CI 19-45%) in the overall group. In the non-Rastelli group the data at 20 years were 47% (CI 11-83%) and for the Rastelli group 21% (CI 0-54%) after almost 19 years. Conclusions Long term follow up confirms that surgery in CCTGA with the right ventricle as systemic ventricle has a suboptimal survival and limited freedom of reoperation. Death occurred mostly as a result of cardiac failure.
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Affiliation(s)
- Ad J J C Bogers
- Department of Cardiothoracic Surgery, Erasmus University Medical Center, PO Box 2040, 3000 CA, Rotterdam, The Netherlands.
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22
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Lim HG, Lee JR, Kim YJ, Park YH, Jun TG, Kim WH, Lee CH, Park HK, Yang JH, Park CS, Kwak JG. Outcomes of biventricular repair for congenitally corrected transposition of the great arteries. Ann Thorac Surg 2010; 89:159-67. [PMID: 20103227 DOI: 10.1016/j.athoracsur.2009.08.071] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2009] [Revised: 08/22/2009] [Accepted: 08/25/2009] [Indexed: 12/24/2022]
Abstract
BACKGROUND This study was undertaken to evaluate long-term results of biventricular repairs for congenitally corrected transposition of the great arteries, and to analyze the risk factors that affect mortality and morbidity. METHODS Between 1983 and 2009, 167 patients with congenitally corrected transposition of the great arteries underwent biventricular repairs. The physiologic repairs were performed in 123 patients, and anatomic repairs in 44. Average follow-up was 9.3 +/- 6.6 years. RESULTS Kaplan-Meier estimated survival was 83.3% +/- 0.5% at 25 years in biventricular repair. In anatomic repair, left ventricular training and right ventricular dysfunction had negative impact on survival, but bidirectional cavopulmonary shunt had positive impact on survival. The reoperation-free ratio was 10.1% +/- 7.8% at 22 years after physiologic repair, and 46.2% +/- 12.4% at 15 years after anatomic repair (p = 0.885). Freedom from any arrhythmia was 49.6% +/- 7.5% at 22 years after physiologic repair, and 60.8% +/- 14.8% at 18 years after anatomic repair (p = 0.458). Freedom from systemic atrioventricular valve and ventricular dysfunction as well as tricuspid valve and right ventricular dysfunction was significantly higher in anatomic repair than in physiologic repair. CONCLUSIONS Long-term results of biventricular repair were satisfactory. Patients presenting with right ventricular dysfunction or need for left ventricular training represent a high-risk group of anatomic repair for which selection criteria are particularly important. Late functional outcomes of anatomic repair were excellent compared with physiologic repair. Anatomic repair is the procedure of choice for those patients if both ventricles are adequate or if surgical technique is modified with the help of additional a bidirectional cavopulmonary shunt.
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Affiliation(s)
- Hong-Gook Lim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University College of Medicine, Seoul National University Children's Hospital, Seoul, Korea
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23
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Gaies MG, Goldberg CS, Ohye RG, Devaney EJ, Hirsch JC, Bove EL. Early and intermediate outcome after anatomic repair of congenitally corrected transposition of the great arteries. Ann Thorac Surg 2010; 88:1952-60. [PMID: 19932268 DOI: 10.1016/j.athoracsur.2009.08.014] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2009] [Revised: 08/06/2009] [Accepted: 08/07/2009] [Indexed: 12/24/2022]
Abstract
BACKGROUND Anatomic repair of congenitally corrected transposition of the great arteries has become a useful surgical strategy with potential advantages over conventional surgical repair. We describe early and intermediate outcomes after anatomic repair and analyze potential risk factors influencing these outcomes. METHODS A retrospective review was performed on all patients undergoing anatomic repair between January 1993 and January 2009. The primary outcome was in-hospital mortality. Variables potentially associated with outcome were identified a priori. Bivariate analyses were performed to determine the association between these variables and all outcome measures. RESULTS In 65 patients who underwent anatomic repair, 35 had Senning/arterial switch and 30 had Senning/Rastelli. Early and intermediate survival rates for Senning/arterial switch operations were 94% and 91%, respectively. Repairs were successful in patients with tricuspid regurgitation, left ventricular outflow obstruction, and left ventricular dysfunction. Predictors of outcome were not identified in this subset. Early and intermediate survival rates for Senning/Rastelli operations were 77% and 60%, respectively. Longer aortic cross-clamp (p = 0.03) and cardiopulmonary bypass times (p = 0.01) were associated with mortality. Ventricular septal defect enlargement was associated with surgical heart block (p < 0.01). Age, prior procedures, atrial-apical discordance, and tricuspid regurgitation were not associated with outcome. CONCLUSIONS Senning/arterial switch operations can be performed with excellent intermediate-term outcomes in patients with lesions previously thought to confer higher risk. Candidates for Senning/Rastelli procedures may be at increased risk for postoperative morbidity and mortality. More data are necessary to determine factors influencing outcome after anatomic repair.
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Affiliation(s)
- Michael G Gaies
- Department of Pediatrics, University of Michigan School of Medicine, Ann Arbor, Michigan, USA.
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Fontan Palliation in the Modern Era: Factors Impacting Mortality and Morbidity. Ann Thorac Surg 2009; 88:1291-9. [DOI: 10.1016/j.athoracsur.2009.05.076] [Citation(s) in RCA: 129] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2008] [Revised: 05/20/2009] [Accepted: 05/21/2009] [Indexed: 11/24/2022]
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Sharma R, Talwar S, Marwah A, Shah S, Maheshwari S, Suresh P, Garg R, Bali BS, Juneja R, Saxena A, Kothari SS. Anatomic repair for congenitally corrected transposition of the great arteries. J Thorac Cardiovasc Surg 2009; 137:404-412.e4. [PMID: 19185160 DOI: 10.1016/j.jtcvs.2008.09.048] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2008] [Revised: 08/02/2008] [Accepted: 09/19/2008] [Indexed: 12/24/2022]
Abstract
OBJECTIVE Anatomic repair is being actively evaluated as the preferred option for congenitally corrected transposition of the great arteries. We present our 13-year experience with this approach. METHODS Between May 1994 and September 2007, 68 patients with congenitally corrected transposition of the great arteries underwent anatomic repair. Thirty-one patients (group 1, mean age of 94.8 +/- 42.3 months) underwent a combined Rastelli and atrial switch operation. Thirty-seven patients (group 2, mean age of 36.1 +/- 46.9 months) underwent an arterial switch operation and atrial rerouting. Eight patients in group 2 had an intact ventricular septum. RESULTS Group 1 had 5 early deaths (17%) but no late deaths. Three patients underwent conduit revision at a mean follow-up of 62 months. Group 2 had 5 early deaths (13.5%). There were 4 late reoperations (2 pulmonary baffle revisions, 1 mitral valve replacement, and 1 permanent pacemaker implantation) and 4 late deaths (1 secondary to progressive left ventricular dysfunction, 2 secondary to uncontrolled atrial tachyarrhythmia, and 1 secondary to pulmonary hypertension and right ventricular failure). In group 2, 4 patients have a left ventricular ejection fraction less than 40%, 5 patients have moderate aortic incompetence, 5 patients have symptomatic tricuspid incompetence, 1 patient has tricuspid stenosis, 1 patient has superior cava obstruction, and 3 patients are receiving antiarrhythmic therapy. CONCLUSION The occurrence of left ventricular dysfunction indicate that anatomic repair in the arterial switch group is still fraught with imperfections. The Rastelli group required conduit revisions but has otherwise performed well.
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Affiliation(s)
- Rajesh Sharma
- Narayana Hrudayalaya Institute of Cardiac Sciences, Bangalore, India
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Gaca AM, Jaggers JJ, Dudley LT, Bisset GS. Repair of Congenital Heart Disease: A Primer–Part 1. Radiology 2008; 247:617-31. [DOI: 10.1148/radiol.2473061909] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Brawn WJ, Barron DJ, Jones TJJ, Quinn DW. The fate of the retrained left ventricle after double switch procedure for congenitally corrected transposition of the great arteries. Semin Thorac Cardiovasc Surg Pediatr Card Surg Annu 2008; 11:69-73. [PMID: 18396228 DOI: 10.1053/j.pcsu.2008.01.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- William J Brawn
- Cardiac Surgery, Birmingham Children's Hospital, Birmingham, UK
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28
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Shin'oka T, Kurosawa H, Imai Y, Aoki M, Ishiyama M, Sakamoto T, Miyamoto S, Hobo K, Ichihara Y. Outcomes of definitive surgical repair for congenitally corrected transposition of the great arteries or double outlet right ventricle with discordant atrioventricular connections: Risk analyses in 189 patients. J Thorac Cardiovasc Surg 2007; 133:1318-28, 1328.e1-4. [PMID: 17467450 DOI: 10.1016/j.jtcvs.2006.11.063] [Citation(s) in RCA: 93] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2006] [Revised: 10/25/2006] [Accepted: 11/03/2006] [Indexed: 01/04/2023]
Abstract
OBJECTIVE This study was undertaken to compare long-term results of various types of surgical repairs for either congenitally corrected transposition of the great arteries or double outlet right ventricle with discordant atrioventricular connections, and to analyze the risk factors that affect early and late mortality and reintervention. METHODS Between January 1972 and September 2005, a total of 189 patients (median age 8.3 years, range 2 months to 47 years old) with congenitally corrected transposition of the great arteries or double outlet right ventricle with discordant atrioventricular connections underwent definitive repairs. The definitive repairs comprised a conventional repair (atrial septal defect, or ventricular septal defect closure with or without pulmonary stenosis release, or isolated tricuspid valve surgery) in 36 patients (group I), conventional Rastelli in 31 patients (group II), double-switch operation (atrial switch plus arterial switch) in 15 patients (group III), atrial switch plus intraventricular rerouting (with or without extracardiac conduits) in 69 patients (group IV), and a Fontan-type repair in 38 patients (group V). The mean follow-up period was 10.1 years. Hospitalization and late mortality and reoperation were indicated as events. Risk factors for these events were analyzed by logistic regression for hospital death and a Cox proportional hazards model for late events. RESULTS The Kaplan-Meier survival including hospital and late mortality was 62.4% at 32 years in group I, 78.5% at 27 years in group II, 74.5% at 15 years in group III, 80% at 16 years in group IV, and 79.3% at 22 years in group V. The reoperation-free ratio was 64.2% in group I, 76.6% in group II, 84.4% in group III, 89.6% in group IV, and 91.3% in group V. Risk analyses showed that the risk for hospital death was preoperative in patients with more than moderate tricuspid regurgitation and a cardiopulmonary bypass time of more than 240 minutes. A risk for late mortality was the presence of tricuspid regurgitation. Risks for reoperation were preoperative cardiomegaly, preoperative tricuspid regurgitation of more than grade II, ventricular septal defect enlargement, and body weight less than 10 kg. Risks for pacemaker implantation, as indicated by multivariate analysis, were ventricular septal defect enlargement during operation and age less than 3 years. CONCLUSIONS There were no statistical differences between long-term survival rates of patients who underwent conventional surgical repair versus those of patients who underwent anatomic surgical repair. Results of conventional repair were satisfactory except in patients with significant tricuspid regurgitation. Results of anatomic repair were also satisfactory even for patients with significant tricuspid regurgitation, and therefore, anatomic repair should be the procedure of choice for those patients.
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Affiliation(s)
- Toshiharu Shin'oka
- Department of Cardiovascular Surgery, The Heart Institute of Japan, Tokyo Women's Medical University, Tokyo, Japan.
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Bini RM, Favilli S, Murzi B, Moschetti R, Santoro G, Traini AM. An unusual case of tricuspid lesion in congenital corrected transposition of the great arteries. J Cardiovasc Med (Hagerstown) 2007; 8:281-3. [PMID: 17413306 DOI: 10.2459/01.jcm.0000263488.07339.d2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
An unusual case of severe supravalvular stenosing ring of the left atrium associated with tricuspid valve dysplasia in an adult symptomatic patient affected by congenitally corrected transposition and unrestrictive ventricular septal defect is reported. The stenosis of the systemic atrioventricular valve possibly prevented the development of obstructive pulmonary vascular disease; removal of the membrane, attached to the tricuspid annulus, together with pulmonary banding was carried out. Clinical conditions improved after surgery. The unusual stenotic lesion of the systemic right ventricular inflow allowed conservative surgical palliation in this adult patient.
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Affiliation(s)
- Roberta M Bini
- Division of Paediatric Cardiology, Anna Meyer Hospital, and Department of Heart and Great Vessels, Careggi University Hospital, Florence, Italy
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Hörer J, Haas F, Cleuziou J, Schreiber C, Kostolny M, Vogt M, Holper K, Lange R. Intermediate-term results of the Senning or Mustard procedures combined with the Rastelli operation for patients with discordant atrioventricular connections associated with discordant ventriculoarterial connections or double outlet right ventricle. Cardiol Young 2007; 17:158-65. [PMID: 17244378 DOI: 10.1017/s1047951107000121] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/24/2006] [Indexed: 11/07/2022]
Abstract
BACKGROUND In patients with discordant atrioventricular and ventriculoarterial connections, anatomic repair restores the morphologically left ventricle to its role in supporting the systemic circulation. In this study, we have evaluated the outcomes in the intermediate term for this complex surgical procedure. METHODS Between December 1984 and October 2003, 4 patients underwent an atrial switch operation concomitantly with a Rastelli operation, and 2 patients underwent an atrial switch operation and a patch-plasty of the pulmonary outflow tract for anatomic repair at a mean age of 3.3 plus or minus 2.1 years. All patients had intracardiac rerouting, connecting the morphologically left ventricle to the aorta. RESULTS There were no hospital deaths. In 5 patients, reoperation was needed, either for baffle complications, exchange of the conduit, repair of a residual ventricular septal defect, or relief of obstruction within the left ventricular outflow tract. Death occurred in 1 patient, from cardiac failure 6 months after correction. Mean follow-up time was 6.5 plus or minus 6.4 years, with a range from 6 months to 17 years. At follow-up, 1 patient presented with moderate tricuspid insufficiency, and 1 patient with mild obstruction of the pulmonary venous pathway. The remaining 3 patients showed good left and right ventricular function, and no, or mild tricuspid and mitral insufficiency. CONCLUSIONS Anatomic repair can be performed with low hospital mortality. Restoration of the morphologically left ventricle into the systemic circulation in patients with discordant atrioventricular and ventriculoarterial connections is a demanding approach, associated with various reoperations over time. Despite this, the approach seems to be an appropriate solution for selected patients, since the majority of the patients show good left and right ventricular function, and no, or mild tricuspid and mitral insufficiency up to 17 years after correction.
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Affiliation(s)
- Jürgen Hörer
- Department of Cardiovascular Surgery, German Heart Centre Munich at the Technical University, Munich, Germany.
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Yasuda K, Ohuchi H, Ono Y, Yagihara T, Echigo S. Cardiorespiratory responses to exercise after anatomic repair of atrioventricular discordance with abnormal ventriculoarterial connection. Pediatr Cardiol 2007; 28:14-20. [PMID: 17165112 DOI: 10.1007/s00246-005-1225-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2005] [Accepted: 08/03/2006] [Indexed: 11/25/2022]
Abstract
We evaluated exercise tolerance and cardiorespiratory responses to exercise in patients with atrioventricular discordance (AVD) and abnormal ventriculoarterial connection after anatomic repair. Cardiopulmonary treadmill exercise testing with gas measurement was done 62 times in 19 patients with AVD who had undergone anatomic repair at the National Cardiovascular Center. Exercise duration, oxygen uptake (V(O2)) and heart rate at anaerobic threshold and peak, and oxygen pulse during exercise were significantly lower in patients with AVD after anatomic repair than in controls. Carbon dioxide ventilatory equivalent during exercise was worse in patients with AVD after anatomic repair than in controls. Percentage peak V(O2) significantly correlated positively with percentage peak oxygen pulse and tended to correlate positively with the heart rate increments. Patients with AVD after anatomic repair exhibit impaired responses of heart rate and oxygen pulse with lower exercise capacity. Careful attention should be paid to patients with AVD after anatomic repair in terms of their functional capacity as well as other postoperative complications.
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Affiliation(s)
- Kenji Yasuda
- Department of Pediatrics, Shimane University, School of Medicine, 89-1 Enya-cho, Izumo city, Shimane 693-8501, Japan.
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Chowdhury UK, Kothari SS, Pradeep KK. Anomalous origin of the right coronary artery from the left anterior interventricular coronary artery in the setting of tetralogy of Fallot. Cardiol Young 2006; 16:501-3. [PMID: 16984704 DOI: 10.1017/s1047951106001132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/16/2006] [Indexed: 11/07/2022]
Abstract
We describe anomalous origin of the right coronary artery from the left anterior interventricular coronary artery in a 16-year-old female with tetralogy of Fallot, highlighting the rarity and surgical significance of this anomaly.
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Affiliation(s)
- Ujjwal K Chowdhury
- Cardiothoracic Centre, All India Institute of Medical Sciences, New Delhi, India.
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Backer CL, Stewart RD, Mavroudis C. The classical and the one-and-a-half ventricular options for surgical repair in patients with discordant atrioventricular connections. Cardiol Young 2006; 16 Suppl 3:91-6. [PMID: 17378046 DOI: 10.1017/s1047951106000801] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The classical option for surgical repair in patients with congenitally corrected transposition takes advantage of the physiologic correction provided by nature. At the end of the surgical procedures, however, the morphologically right ventricle remains as the systemic ventricle. Surgical intervention is essentially the correction of associated lesions, including closure of ventricular septal defects, pulmonary valvotomy, placement of a conduit from the morphologically left ventricle to the pulmonary arteries, replacement of the morphologically tricuspid valve, and placement of pacemakers for third degree atrioventricular block. For many years, the classical approach was the “standard” surgical approach.1–4More recently, newer alternatives have become available, including forms of anatomic repair, the “one-and-a half” ventricular option, and conversion to the Fontan circulation. The goal of anatomic repair is to craft connections such that the morphologically left ventricle becomes the systemic ventricle. Surgical techniques that accomplish this are a Rastelli procedure combined with an atrial baffle,5and the combination of an arterial switch with an atrial baffle, be it a Mustard or Senning procedure.6
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Affiliation(s)
- Carl L Backer
- Division of Cardiovascular-Thoracic Surgery, Children's Memorial Hospital, Northwestern University Feinberg School of Medicine, Chicago, Illinois 60614, USA.
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Bove EL, Ohye RG, Devaney EJ, Kurosawa H, Shin'oka T, Ikeda A, Nakanishi T. Anatomic correction of congenitally corrected transposition and its close cousins. Cardiol Young 2006; 16 Suppl 3:85-90. [PMID: 17378045 DOI: 10.1017/s1047951106001399] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The congenital cardiac malformation characterized by discordant connections between the atriums and ventricles, as well as those between the ventricles and the arterial trunks, has been given many names. The terms atrioventricular discordance, l-transposition of the great arteries, ventricular inversion, and congenitally corrected transposition have all been used. Regardless of terminology, this complex congenital anomaly has only recently been studied to analyze the long-term effects of its natural history and outcomes following traditional surgical repair of the associated malformations which serve to uncorrect the circulatory pathways. As more patients survive into adulthood, the effects of this condition are now better understood, and the surgical approaches used in the past are being re-examined in light of longer-term follow up.
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Affiliation(s)
- Edward L Bove
- The Division of Pediatric Cardiovascular Surgery, Section of Cardiac Surgery, The University of Michigan School of Medicine, Ann Arbor, Michigan, USA.
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Alghamdi AA, McCrindle BW, Van Arsdell GS. Physiologic versus anatomic repair of congenitally corrected transposition of the great arteries: meta-analysis of individual patient data. Ann Thorac Surg 2006; 81:1529-35. [PMID: 16564320 DOI: 10.1016/j.athoracsur.2005.09.035] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2005] [Revised: 09/12/2005] [Accepted: 09/15/2005] [Indexed: 12/24/2022]
Abstract
The objective of this meta-analysis of individual patients' data was to compare the immediate outcomes of anatomic and physiologic repair of congenitally corrected transposition of the great arteries. Eleven nonrandomized studies, involving 124 patients, met the inclusion criteria for this review. The Rastelli type anatomic repair and the era of surgery were significantly related to the outcome in different tested models. Entering all variables into the logistic regression model showed a significant protective effect of the Rastelli type anatomic repair (odds ratio = 0.05, 95% confidence interval: 0.01, 0.50, p = 0.02).
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Affiliation(s)
- Abdullah A Alghamdi
- Division of Cardiac Surgery, Congenital Cardiac Surgery Program, Department of Surgery, University of Toronto, Toronto, Ontario, Canada.
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Abstract
Conditions in which the right ventricle serves as the systemic pumping chamber are frequently complicated by the development of right ventricular failure and tricuspid valve regurgitation. The right ventricle is the systemic ventricle in conditions of ventriculoarterial discordance with atrioventricular concordance (transposition of the great arteries) or with atrioventricular discordance (congenitally corrected transposition of the great arteries). Concerns regarding actual or potential systemic right ventricular failure in these cases may lead to surgical evaluation and treatment designed to reestablish the left ventricle as the systemic pump. In cases where the left ventricle has prolonged exposure to low pressures in the pulmonary circulation, the left ventricle must be "retrained" to assume a systemic pressure load. Anatomic repair, with or without a preparatory period of left ventricular retraining, is a consideration for three clinically relevant scenarios: (1) patients with transposition of the great arteries after an atrial level switch (Senning or Mustard procedure), (2) patients with congenitally corrected transposition who are unoperated or who have undergone physiologic ("classic") repair, and (3) unoperated patients with transposition who present after the neonatal period.
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Affiliation(s)
- Brian W Duncan
- Department of Pediatric and Congenital Heart Surgery, The Children's Hospital at The Cleveland Clinic, Cleveland, Ohio 44195, USA.
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Hraska V, Duncan BW, Mayer JE, Freed M, del Nido PJ, Jonas RA. Long-term outcome of surgically treated patients with corrected transposition of the great arteries. J Thorac Cardiovasc Surg 2005; 129:182-91. [PMID: 15632841 DOI: 10.1016/j.jtcvs.2004.02.046] [Citation(s) in RCA: 114] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES The purpose of the study was to examine long-term outcome after traditional surgical treatment of corrected transposition of the great arteries to provide a basis for comparison with new procedures, such as the double-switch or Senning-Rastelli procedures. METHODS Patient- and procedure-related variables in 123 patients with corrected transposition and 2 functional ventricles operated on between 1963 and 1996 were analyzed. Patients with intracardiac procedures underwent either a traditional 2-ventricle repair or a Fontan procedure. RESULTS The 1-, 5-, 10-, and 15-year survivals after the operation were 84%, 75%, 68%, and 61%, respectively. Patients requiring tricuspid valve replacement (27 patients) at any time during follow-up had a significantly worse outcome ( P < .001; hazard ratio, 4.4), whereas the best outcome was seen in patients undergoing the Fontan procedure (17 patients, 0 deaths). Right ventricular end-diastolic pressure of greater than 17 mm Hg before the operation ( P < .0001), complete heart block after the operation ( P = .001), subvalvular pulmonary stenosis ( P = .013), Ebstein malformation of the tricuspid valve ( P = .025), and preoperative systemic (right) ventricular dysfunction ( P = .041) were identified as risk factors for death at any time by means of univariate analysis. Ebstein malformation of the tricuspid valve ( P = .036; hazard ratio, 1.5) was identified as a risk factor for death by multivariate analysis. CONCLUSIONS The long-term outcome of patients with corrected transposition after a classic surgical approach is unsatisfactory. The poorest outcome was seen in patients who required tricuspid valve replacement either at their initial operation or later during follow-up. Alternative surgical approaches, such as the double-switch, Senning-Rastelli, or Fontan procedures, are likely to have better long-term results, especially in the highest risk groups.
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Affiliation(s)
- Viktor Hraska
- Department of Pediatric Cardiac Surgery, University Hospital Hamburg-Eppendorf, Germany
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Winlaw DS, McGuirk SP, Balmer C, Langley SM, Griselli M, Stümper O, De Giovanni JV, Wright JG, Thorne S, Barron DJ, Brawn WJ. Intention-to-treat analysis of pulmonary artery banding in conditions with a morphological right ventricle in the systemic circulation with a view to anatomic biventricular repair. Circulation 2005; 111:405-11. [PMID: 15687127 DOI: 10.1161/01.cir.0000153355.92687.fa] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Some patients with a morphological right ventricle (mRV) in the systemic circulation require early intervention because of progressive systemic ventricular dysfunction or atrioventricular valve regurgitation. They may be eligible for anatomic repair (correction of atrioventricular and ventriculoarterial discordance) but require prior training of the morphological left ventricle (mLV). METHODS AND RESULTS Forty-one patients with congenitally corrected transposition of the great arteries or a previous atrial switch procedure embarked on a protocol of pulmonary artery (PA) banding with a view to anatomic repair. All had an mRV in the systemic circulation and a subpulmonary mLV that was not conditioned by either volume or pressure load. Two patients were not banded, and 39 were followed up for a median of 4.3 years (range, 25 days to 12.6 years). Sixteen patients achieved anatomic repair, with 3 in the early stages of the training protocol. After 2 years, 12 patients were not suitable for anatomic repair and persisted with palliative banding; 8 were functionally improved; and 4 died, underwent transplantation, or required debanding. PA banding improved functional class but did not improve tricuspid regurgitation in the long term for patients not achieving anatomic repair. mLV function was a critical determinant of survival with a PA band as well as survival after anatomic repair. Patients >16 years were unlikely to achieve anatomic repair. CONCLUSIONS PA banding is a safe and effective method of training the mLV before anatomic repair. It is also an effective palliative procedure for those who do not attain this goal.
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Affiliation(s)
- David S Winlaw
- Diana, Princess of Wales Children's Hospital, Birmingham Children's Hospital NHS Trust, Birmingham, England.
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Abstract
Conventional surgery for atrioventricular discordance usually associated with ventricular arterial discordance leaves the morphologic right ventricle in the systemic circulation. Long-term follow-up results with this approach reveal a high incidence of right ventricular failure. The double switch procedure was introduced to restore the morphologic left ventricle to the systemic circulation. This operation is performed in two main ways: the atrial-arterial switch and the atrial switch plus Rastelli procedure. This double switch approach has been successful at least in the medium term in abolishing morphologic right ventricular failure and its associated tricuspid valve regurgitation. In the atrial-arterial switch group, there is an incidence of morphologic left ventricular dysfunction, sometimes associated with neoaortic valve regurgitation, and the minority of cases need aortic valve replacement. The long-term function of the morphologic left ventricle and the aortic valve need careful surveillance in the future. The atrial-Rastelli group of patients has not in the medium term shown evidence of ventricular dysfunction but will require change on a regular basis of their ventricular to pulmonary artery valved conduits.
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DiBardino DJ, Heinle JS, Fraser CD. The hemi-Mustard, bi-directional Glenn, and Rastelli operations used for correction of congenitally corrected transposition, achieving a "ventricle and a half " repair. Cardiol Young 2004; 14:330-2. [PMID: 15680031 DOI: 10.1017/s1047951104003154] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Based on experience in several centers, the double switch operation has reportedly become the standard surgical therapy for congenitally corrected transposition. We report and discuss here the use of a "ventricle and a half" double switch operation performed due to the concerns raised intraoperatively because of the size of the morphologically right ventricle. Although the long-term course of such a procedure in this setting remains unknown, we submit that the proposed benefits of the double switch operation, even when used in the "ventricle and a half" configuration, may be superior to the alternatives.
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Affiliation(s)
- Daniel J DiBardino
- Michael E. DeBakey Department of Surgery, Division of Congenital Heart Surgery, Baylor College of Medicine, Houston, TX, USA.
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Aeba R, Katogi T, Koizumi K, Iino Y, Mori M, Yozu R. Apico-pulmonary artery conduit repair of congenitally corrected transposition of the great arteries with ventricular septal defect and pulmonary outflow tract obstruction: A 10-year follow-up. Ann Thorac Surg 2003; 76:1383-7; discussion 1387-8. [PMID: 14602256 DOI: 10.1016/s0003-4975(03)01073-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND In conventional repair of the congenitally corrected transpositions of the great arteries associated with ventricular septal defect and pulmonary outflow tract obstruction, the placement of the left ventricle-pulmonary artery conduit is at risk owing to probable compression by the sternum, heart block, or injury to the mitral anterior papillary muscle. Apical placement of the left ventriculotomy for the inflow conduit rather than in the midportion or base placement may avoid these complications, although this results in a long and winding extracardiac conduit that may be short-lived because of the proliferation of pseudointima. METHODS Between 1985 and 1990, a nonvalved Dacron woven-fabric graft conduit was placed between the left ventricular apex and pulmonary artery in 5 patients (mean age, 6.2 +/- 1.7 years) who were then followed for at least 10 years. RESULTS No iatrogenic heart blocks or mitral regurgitation developed. All patients were complaint-free during the follow-up period, although 1 patient who was clinically well died suddenly in the 10th follow-up year. Cardiac catheterization in the 10th follow-up year indicated a pressure gradient of 21 +/- 6 mm Hg across the conduit, and angiography revealed that the conduit diameter was 91% +/- 6% of the original conduit diameter. CONCLUSIONS The reportedly poor early and late outcomes that occur after a conventional repair of congenitally corrected transpositions of the great arteries associated with ventricular septal defect and pulmonary outflow tract obstruction, which places an extracardiac conduit between the left ventricle and the pulmonary artery, may be partially neutralized by relocating the inflow position to the apex.
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Affiliation(s)
- Ryo Aeba
- Division of Cardiovascular Surgery, Keio University, Shinjuku, Tokyo, Japan.
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Langley SM, Winlaw DS, Stumper O, Dhillon R, De Giovanni JV, Wright JG, Miller P, Sethia B, Barron DJ, Brawn WJ. Midterm results after restoration of the morphologically left ventricle to the systemic circulation in patients with congenitally corrected transposition of the great arteries. J Thorac Cardiovasc Surg 2003; 125:1229-41. [PMID: 12830039 DOI: 10.1016/s0022-5223(02)73246-7] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE This study was undertaken to determine the outcomes of patients with congenitally corrected transposition of the great arteries after restoration of the morphologically left ventricle to the systemic circulation. METHODS Between November 1991 and June 2001, a total of 54 patients (median age 3.2 years, range 7 weeks-40 years) with either congenitally corrected transposition of the great arteries (n = 51) or atrioventricular discordance with double-outlet right ventricle (n = 3) underwent anatomic repair. This comprised a Senning procedure in all cases plus arterial switch (double-switch group) in 29 cases (53.7%), plus a Rastelli procedure (Rastelli-Senning group) in 22 cases (40.7%), and plus intraventricular rerouting (Senning-tunnel group) in 3 cases (5.6%). Left ventricular training by PA banding was performed before the double-switch operation in 9 of 29 cases (31%). Follow-up is complete (median 4.4 years). RESULTS Early mortality was 5.6% (n = 3), with 2 late deaths. Kaplan-Meier survivals (+/- SEM) were 94.4% +/- 3.1% at 1 year and 89.7% +/- 4.4% at 9 years. Survivals at 7 years were 84.9% +/- 7.1% in the double-switch group and 95.5% +/- 4.4% in the Rastelli-Senning group (P =.32). Of the 49 survivors, 46 (94%) were in New York Heart Association functional class I. Six have acquired new left ventricular dilatation or impaired systolic ventricular function. Four patients in the double-switch group had moderate aortic valve regurgitation develop, and 2 of them required valve replacement. Overall freedoms from reoperation at 1 and 9 years were 94.2% +/- 3.3% and 77.5% +/- 9.0%, with no significant difference between the groups (P =.60). CONCLUSIONS Anatomic repair of congenitally corrected transposition of the great arteries can be carried out with low early mortality. Excellent functional status can be achieved, with good midterm survival. Continued surveillance is necessary for patents with valved conduits and to determine the longer-term function of the aortic valve and the morphologically left ventricle in the systemic circulation.
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Affiliation(s)
- Stephen M Langley
- Department of Cardiac Surgery, Diana Princess of Wales Children's Hospital, Birmingham, United Kingdom.
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Devaney EJ, Charpie JR, Ohye RG, Bove EL. Combined arterial switch and Senning operation for congenitally corrected transposition of the great arteries: patient selection and intermediate results. J Thorac Cardiovasc Surg 2003; 125:500-7. [PMID: 12658191 DOI: 10.1067/mtc.2003.158] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
OBJECTIVE Late results after traditional methods of repair of congenitally corrected transposition of the great arteries are poor. The combined arterial switch and Senning (double switch) operation may improve outcomes by using the morphologically left ventricle and mitral valve in the systemic circulation. In this report we review patient selection and intermediate results after the double switch operation for congenitally corrected transposition of the great arteries. METHODS Since 1993, a total of 35 patients with congenitally corrected transposition of the great arteries with two ventricles of adequate size and no valvular pulmonary stenosis were potential candidates for a double switch operation. Eleven were not yet in need of further treatment, and 1 died during evaluation. The remaining 23 patients were entered into a protocol leading to anatomic repair. Their hospital records were reviewed, and follow-up data were obtained to evaluate early and intermediate outcomes. RESULTS The 23 patients were candidates for anatomic repair because of right ventricular dysfunction or tricuspid regurgitation (n = 15) or associated uncorrected defects (n = 8). Pulmonary artery banding was performed in a total of 15 patients, either for left ventricular retraining (n = 11) or for congestive heart failure (n = 4). In 2 patients, aged 12 and 14 years, retraining was unsuccessful because of left ventricular dysfunction. Four patients with banding are currently awaiting repair. Eight patients proceeded to undergo double switch operations without preliminary pulmonary artery banding. To date, 17 patients have undergone double switch operations, with no early or late mortality. One patient required cardiac transplantation for progressive left ventricular failure after a preliminary banding and double switch operation done at 7 years of age. Ventricular function and tricuspid regurgitation remained stable or improved in all other cases. No patient has surgically acquired arrhythmias or significant residual hemodynamic conditions. All patients are alive and clinically well at a mean follow-up of 36 months (range 1 month-8 years). CONCLUSIONS Congenitally corrected transposition of the great arteries with a normal pulmonary valve and two adequate ventricles can be managed with combined arterial switch and Senning operation with excellent intermediate results. Reconditioning the left ventricle may not be suitable for older patients. Late follow-up will be necessary to determine whether this management strategy provides a survival advantage for these patients.
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Affiliation(s)
- Eric J Devaney
- Section of Cardiac Surgery, Division of Pediatric Cardiac Surgery, Department of Pediatrics, University of Michigan School of Medicine, Ann Arbor, USA
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Dodge-Khatami A, Tulevski II, Bennink GBWE, Hitchcock JF, de Mol BAJM, van der Wall EE, Mulder BJM. Comparable systemic ventricular function in healthy adults and patients with unoperated congenitally corrected transposition using MRI dobutamine stress testing. Ann Thorac Surg 2002; 73:1759-64. [PMID: 12078766 DOI: 10.1016/s0003-4975(02)03553-1] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND Failure of the systemic right ventricle (RV) often complicates adult survival in unoperated or physiologically repaired congenitally corrected transposition of the great arteries (CCTGA). Healthy controls schematically represent an optimal outcome of anatomic repair, which is increasingly performed to treat CCTGA. Magnetic resonance imaging dobutamine stress testing measures cardiac reserve, and sets to compare the left ventricle of controls with the systemic RV of unoperated and physiologically repaired patients with CCTGA. METHODS Baseline and stress magnetic resonance imaging (maximum dobutamine dose, 15 microg/kg/min) assessed systemic RV function in 13 minimally or asymptomatic adult patients with CCTGA (unoperated, n = 7; physiologically repaired, n = 6). The left ventricles of 11 healthy age-matched adults served as controls. RESULTS Baseline and stress end-diastolic volumes similar between the systemic RV of unoperated patients and the left ventricle of controls, as well as base end-systolic volumes. Stress ejection fraction was lower in unoperated and physiologically repaired patients (70 +/- 6% and 60 +/- 5%, respectively, vs healthy controls (84 +/- 8%). However, comparable with healthy controls, both subsets of CCTGA patients responded appropriately to dobutamine stress, as illustrated by similar RV stroke volume, heart rate, mean blood pressure, and cardiac index. CONCLUSIONS Compared with the left ventricles of healthy controls, both patient groups had larger systemic RV volumes, diminished ejection fraction, but an appropriate response to dobutamine stress. Values of unoperated patients are closer to normal than physiologically repaired patients. Magnetic resonance imaging dobutamine may help to define the subgroups of CCTGA patients with favorable anatomy, whereby asymptomatic adult survival could be anticipated without the need for an operation.
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Affiliation(s)
- Ali Dodge-Khatami
- Division of Cardiothoracic Surgery, Academic Medical Center, University of Amsterdam, The Netherlands.
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Ilbawi MN, Ocampo CB, Allen BS, Barth MJ, Roberson DA, Chiemmongkoltip P, Arcilla RA. Intermediate results of the anatomic repair for congenitally corrected transposition. Ann Thorac Surg 2002; 73:594-9; discussion 599-600. [PMID: 11845880 DOI: 10.1016/s0003-4975(01)03408-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Anatomic repair of congenitally corrected transposition of the great arteries has several advantages over the traditional approach but lacks long-term evaluation. METHODS The data on 12 patients who had the procedure between January 1989 and June 2000 were retrospectively reviewed. Associated lesions included ventricular septal defect in 12 patients, pulmonary stenosis in 10 patients, and moderate to severe tricuspid valve regurgitation in 4 patients. Mean age at operation was 9+/-3.6 months. All patients had venous switch Mustard procedure. Tunneling of the morphologic left ventricle through the ventricular septal defect to the aorta with insertion of right ventricular to pulmonary artery conduit was performed in 10 patients, and arterial switch operation in 2. Concomitant tricuspid valvuloplasty was done in 2 patients and ventricular septal defect enlargement in 1. RESULTS There was one hospital death (9%) in the patient who needed ventricular septal defect enlargement. Complications included atrioventricular block requiring pacemaker insertion in 1 patient (9%) and superior vena caval obstruction in 1 patient (9%). Follow-up is available on all patients 0.5 to 10 years (mean, 7.6+/-3.1 years). All patients are asymptomatic. Exercise test results on the three oldest patients were normal. Bradytachyarrhythmias developed in 4 patients (36%). Right ventricular to pulmonary artery conduit replacement was needed in 5 patients 2.2 to 7.1 years (mean 5.2+/-3.6 years) postoperatively. Mild to moderate tricuspid valve regurgitation persisted in 2 patients. Systemic left ventricular fractional shortening was 36% to 47% (mean, 39%+/-4.6%), and ejection fraction was 49% to 70% (mean, 60.8%+/-7.9%). CONCLUSIONS The double switch operation can be performed safely with minimal intermediate and long-term complications.
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Affiliation(s)
- Michel N Ilbawi
- University of Illinois at Chicago, The Heart Institute for Children, Hope Children's Hospital, Oak Lawn, Illinois 60453, USA
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Poirier NC, Mee RB. Left ventricular reconditioning and anatomical correction for systemic right ventricular dysfunction. Semin Thorac Cardiovasc Surg Pediatr Card Surg Annu 2001; 3:198-215. [PMID: 11486198 DOI: 10.1053/tc.2000.6506] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The morphologically right ventricle (mRV) fails after managing systemic workload for a variable period of time in some patients with transposition of the great arteries (TGA) who have undergone an atrial switch operation and in patients with congenitally corrected transposition of the great arteries (cc-TGA). Conventional therapy for progressive mRV failure, including tricuspid valve replacement and cardiac transplantation, has been disappointing. Anatomical correction, reincorporating the morphologically left ventricle (mLV) into systemic circulation, was performed in a total of 84 patients (39 TGA, 45 cc-TGA) in 2 institutions (Royal Children Hospital 1981-1993; Cleveland Clinic Foundation 1993-1999). The mVL was retrained to generate systemic pressure by means of pulmonary artery band in 43 patients. The overall mortality for patients entering this program is 15.4% (8 early and 5 late operative deaths). All of the operative deaths were patients with TGA and a prior atrial switch operation. Four patients (5%) have been transplanted or are on a transplantation waiting list. In patients with TGA and previous atrial switch operation, older age and abnormal coronary anatomy was associated with a higher operative mortality. None of the measured parameters of the mLV and mRV were predictors of failure of mLV reconditioning. Follow-up echocardiographic evaluations of the 46 survivors of anatomical correction showed normal mRV function in 41 (89%) and normal mLV function in 42 patients (91%). mLV retraining and anatomical correction produces good results in prepubescent patients. The response of older patients is less predictable and associated with a higher early and late mortality. Copyright 2000 by W.B. Saunders Company
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Affiliation(s)
- Nancy C. Poirier
- Center for Pediatric and Congenital Heart Disease, Cleveland Clinic Foundation, Cleveland, OH
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Biliciler-Denktas G, Feldt RH, Connolly HM, Weaver AL, Puga FJ, Danielson GK. Early and late results of operations for defects associated with corrected transposition and other anomalies with atrioventricular discordance in a pediatric population. J Thorac Cardiovasc Surg 2001; 122:234-41. [PMID: 11479495 DOI: 10.1067/mtc.2001.115241] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES The purpose of this study was to determine the early and late results for children having operations for defects associated with corrected transposition of the great arteries and other anomalies with atrioventricular discordance. METHODS Data on 111 children operated on from July 1, 1971, through January 31, 1996, including clinic records, operative reports, and follow-up visits and questionnaires, were analyzed with particular reference to variables associated with early and late mortality, reoperations, ventricular function, and status of the atrioventricular valves. RESULTS Complex associated anomalies were common and included double-outlet right ventricle (n = 43) and situs abnormalities (n = 38). Overall early mortality was 16%; for the 29 patients operated on after 1986, early mortality was 3%. Early survival was adversely affected by patch repair of ventricular septal defect and early operative interval. Follow-up of the 93 early survivors extended to 26.5 years (mean 11.4 years). Overall survival was 77% (+/-4%) at 5 years and 67% (+/-5%) at 10 years. Late survival was adversely affected by prior operations, more severe preoperative functional class, and cardiac rhythm other than sinus. Reoperation was required for 38 (41%) patients, most commonly for conduit replacement (n = 22) or repair/replacement of the systemic ventricle atrioventricular valve (n = 13). CONCLUSIONS These results can serve as a basis for comparison with newer surgical alternatives proposed for corrected transposition of the great arteries.
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MESH Headings
- Adolescent
- Adult
- Cardiac Pacing, Artificial/statistics & numerical data
- Chi-Square Distribution
- Child
- Child, Preschool
- Echocardiography
- Female
- Follow-Up Studies
- Heart Septal Defects, Atrial/complications
- Heart Septal Defects, Atrial/diagnostic imaging
- Heart Septal Defects, Atrial/mortality
- Heart Septal Defects, Atrial/surgery
- Heart Septal Defects, Ventricular/complications
- Heart Septal Defects, Ventricular/diagnostic imaging
- Heart Septal Defects, Ventricular/mortality
- Heart Septal Defects, Ventricular/surgery
- Humans
- Infant
- Male
- Proportional Hazards Models
- Reoperation/statistics & numerical data
- Risk Factors
- Statistics, Nonparametric
- Survival Analysis
- Transposition of Great Vessels/complications
- Transposition of Great Vessels/mortality
- Transposition of Great Vessels/surgery
- Treatment Outcome
- Ventricular Dysfunction/diagnostic imaging
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Affiliation(s)
- G Biliciler-Denktas
- Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN, USA
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Imamura M, Drummond-Webb JJ, Murphy DJ, Prieto LR, Latson LA, Flamm SD, Mee RB. Results of the double switch operation in the current era. Ann Thorac Surg 2000; 70:100-5. [PMID: 10921690 DOI: 10.1016/s0003-4975(00)01416-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND In patients with atrioventricular and arterioventricular discordance congenitally corrected transposition, the morphologically right ventricle may progressively deteriorate while functioning in the systemic circuit. The double switch operation has been proposed to limit this functional deterioration. METHODS From October 1993 to August 1998, the records of 27 patients with congenitally corrected transposition were reviewed. Age at operation ranged from 3 months to 55 years. Associated defects included ventricular septal defects in 18, pulmonary atresia in 7, and pulmonary stenosis in 11 patients. Twenty-two patients had double switch operations (10 arterial switch plus Senning procedures and 12 Rastelli plus Senning procedures). Five patients were not candidates for the double switch. Before the double switch, 6 patients required pulmonary artery banding and 10 had functioning systemic to pulmonary artery or cavopulmonary shunts. RESULTS There was no early or late mortality. Two patients required pacemaker implantation, both later regained normal sinus rhythm. Tricuspid valve function improved in all patients except one. Moderate left ventricular dysfunction developed 5 months postoperatively in 1 patient. CONCLUSIONS The double switch operation can be performed in selected patients with minimal early morbidity and mortality. Longer follow-up is necessary to determine whether this complex approach is indeed warranted.
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Affiliation(s)
- M Imamura
- Department of Pediatric and Congenital Heart Surgery and Cardiology, The Cleveland Clinic Foundation, Ohio 44195-5066, USA
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Webb CL. Congenitally corrected transposition of the great arteries: clinical features, diagnosis and prognosis. PROGRESS IN PEDIATRIC CARDIOLOGY 1999. [DOI: 10.1016/s1058-9813(99)00011-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Congenitally corrected transposition of the great arteries: surgical options for biventricular repair. PROGRESS IN PEDIATRIC CARDIOLOGY 1999. [DOI: 10.1016/s1058-9813(99)00014-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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