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Kitagawa T, Kitaichi T, Sugano M, Kurobe H. Techniques and results in the management of multiple muscular trabecular ventricular septal defects. Gen Thorac Cardiovasc Surg 2013; 61:367-75. [PMID: 23737104 DOI: 10.1007/s11748-013-0267-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2012] [Indexed: 10/26/2022]
Abstract
The management of patients with multiple muscular trabecular ventricular septal defects (VSDs) remains controversial. In the past two decades, innovative techniques including a right ventricular apical infundibulotomy and transcatheter, intraoperative and perventricular device closure have been exploited, and essential right atrial approach and limited apical left ventriculotomy have also been refined. However, specific management guidelines for this difficult disease have not been established. In this article, the benefits and drawbacks of each technique are reviewed and discussed. Primary repair for infants with multiple muscular trabecular VSDs was associated with good late outcomes. The right atrial approach was satisfactory for all muscular VSDs, excluding apical defects that were well seen through a limited apical ventriculotomy. Surgical closure of apical defects could be achieved safely and completely in early infancy through a limited apical left ventriculotomy or a right ventricular apical infundibulotomy. Further follow-up and prudent evaluations of ventriculotomy-associated morbidities are needed. Pulmonary artery banding should be limited to a small infant with complex associated defects. Percutaneous device closure, the most desirable option, is impractical due to limitations between the delivery system and access route. Intraoperative device closure appears less successful than device closure in the catheterization laboratory. Perventricular device closure has a significant advantage of being a non-bypass procedure approach. A less invasive strategy for "true" Swiss cheese septum is needed. All may have an important role, and results obtained by using these techniques are encouraging. These hybrid approaches will promise future success on management guidelines of multiple muscular trabecular VSDs.
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Affiliation(s)
- Tetsuya Kitagawa
- Department of Cardiovascular Surgery, Institute of Health Biosciences, The University of Tokushima Graduate School, 3-18-15 Kuramoto, Tokushima 770-8503, Japan.
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[Results of the surgical closure of ventricular septal defects of various ages: report of 30 cases]. Ann Cardiol Angeiol (Paris) 2007; 57:48-51. [PMID: 18054344 DOI: 10.1016/j.ancard.2007.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2007] [Accepted: 08/27/2007] [Indexed: 10/22/2022]
Abstract
OBJECTIVE To appreciate short and midterm results of patients after surgical closure of the ventricular septal defect. MATERIAL AND METHODS The study is retrospective and took place in the department of cardiovascular surgery "B", Ibn-Sina hospital, Rabat, Morocco. Between 1995 and 2005, 30 patients underwent a surgical closure of ventricular septal defect. Eighteen patients (60%) were males and twelve (40%) were females with a mean age of 10 years (18 months-36 years). Seven patients (23%) were older than 16 years. All of ventricular septal defects were type 2, unique and most of them perimembranous (70%). Four patients (13%), were older than 16 years, had a significant aortic insufficiency that has dictated the aortotomy for ventricular septal defect repair. The surgical approach through the right atriotomy was sufficient for complete repair in 22 patients (73%). Closure of the defect has been done using a pericardial autologous patch in 28 patients (93%). RESULTS No operative mortality was observed. The mean follow-up was five years. Eight patients (26%) had a residual ventricular septal defect that progressed to spontaneous closure. Two patients (6%) had a residual pulmonary hypertension and two others a moderate aortic regurgitation. The four patients were older than 16 years. Echocardiography showed a significant reduction in left ventricular dimension and systolic pulmonary artery pressure. At last follow-up, 87% of the patients were in NYHA class 1. CONCLUSION This study demonstrates that surgical closure of ventricular septal defect ensures a good outcome in short and midterm. Nevertheless, the risk of delayed complications justifies long-term and regular follow-up.
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Black MD, Shukla V, Rao V, Smallhorn JF, Freedom RM. Repair of isolated multiple muscular ventricular septal defects: the septal obliteration technique. Ann Thorac Surg 2000; 70:106-10. [PMID: 10921691 DOI: 10.1016/s0003-4975(00)01372-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
BACKGROUND Isolated multiple ventricular septal defects (mVSDs) remain a surgical challenge. The dilemma of whether to perform a complete repair ultimately rests with the surgeon, who must decide if all significant septal defects can be located. Avoidance of a pulmonary arterial band (as part of a two-stage repair) will negate the need for future pulmonary arterial reconstruction and will reduce the incidence of late right ventricular diastolic dysfunction. METHODS We performed a retrospective analysis of hospital and echocardiographic data of eight children who underwent a septal obliteration technique (SOT) as part of their correction of mVSDs (with and without coarctation of the aorta). RESULTS Eight children with a mean age of 10.5 months (range 1.5 to 36 months), and weight of 6.2 kg (range 2.1 to 13.5 kg), respectively, underwent correction of mVSDs. All had a single, large, perimembranous defect, additional VSDs within the muscular trabecular septum (juxtaposed to the moderator band), and apical mVSDs. All VSDs were repaired via the right atrium, with avoidance of either a right or left ventriculotomy. The posterior and apical defects were excluded from the right ventricular cavity with a pericardial patch (SOT). The follow-up period remains limited to a mean of 20.9 months (8 to 39 months). Two children repaired with SOT had previous pulmonary artery bands (neonatal coarctation repair). All children were successfully discharged home with a mean postoperative Qp:Qs of 1.09:1. One pacemaker was required, but this child has since reverted back to normal sinus rythm. CONCLUSIONS Our initial experience using the SOT in the treatment of apical VSDs as a component of isolated mVSDs has been rewarding. All children are currently alive, in normal sinus rhythm, and have no residual significant left-to-right shunts.
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Affiliation(s)
- M D Black
- Division of Cardiothoracic Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada.
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Merrick AF, Lal M, Anderson RH, Shore DF. Management of ventricular septal defect: a survey of practice in the United Kingdom. Ann Thorac Surg 1999; 68:983-8. [PMID: 10509995 DOI: 10.1016/s0003-4975(99)00689-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND A survey of pediatric cardiac surgeons was performed to establish current opinions in the United Kingdom concerning closure of ventricular septal defect. METHODS Questionnaires were sent to 14 pediatric cardiac centers in 1995 (16 surgeons, 100% response), and again in 1997 (20 surgeons, 100% response). RESULTS Results are presented for 1997, with findings from 1995 shown in parentheses. Eleven (6) surgeons used bypass exclusively, 9 (10) sometimes used circulatory arrest. Operative techniques were similar, although the material used for the patch varied. Multiple defects were approached via the transatrial route by 18 (15), right ventriculotomy by 11 (7) and left ventriculotomy by 7 (6). The juxta-arterial defect was approached via the transpulmonary route by 16 (13), a combination by 9 (11), transatrial by 10 (6), and transventricular by 9 (5). The most common indications for pulmonary arterial banding were "Swiss cheese" defect for 13 (13), and functionally single ventricle for 5 (6). Ventricular septal defect associated with coarctation was repaired in two stages by 13 (10), a single stage by 5 (3), or either by 1 (3). CONCLUSIONS Pediatric cardiac surgeons in the United Kingdom demonstrate a uniform, evidence-based approach to the management of ventricular septal defect.
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Affiliation(s)
- A F Merrick
- Department of Pediatrics, National Heart and Lung Institute, Imperial College School of Medicine, London, England
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Abstract
We report our initial experience with transcatheter closure of ventricular septal defects (VSD) using the Rashkind device. Transcatheter closure of 25 VSDs was attempted in 16 patients with a median age of 2 (range 0.1-4) years and a median weight of 11 (range 4.1-19) kg. The location of the VSDs was apical in 14, midmuscular in 8, and anterior muscular in 3. Five patients had complex heart lesions, 10 patients had associated defects, including perimembranous VSD, atrial septal defect, patent ductus arteriosus, and coarctation of aorta. The remaining patient had isolated multiple muscular VSDs. The surgical repair of VSDs was a high-risk option in all the patients. Of the 25 attempted closures, 22 devices were placed successfully. Nine patients had a single device, four patients had two devices each and one patient had a total of five devices placed. In two patients attempts to close three VSDs were associated with major problems/death. Fourteen patients have been followed up for at least 1 year and all are doing well. Five patients, who otherwise remain asymptomatic, have a trace residual shunt. The fluoroscopy time ranged from 51 to 205 min (median 110) and the procedure time 120 to 300 min (median 200). The transcatheter closure of VSDs acts as a palliation as well as a definitive therapeutic modality in some patients with surgically inaccessible VSDs. Deployment of multiple devices in a patient is feasible. Increased experience may diminish the initial rate of complications.
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Affiliation(s)
- S Janorkar
- Department of Cardiology, Royal Children's Hospital, Melbourne, Victoria, Australia.
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Kitagawa T, Durham LA, Mosca RS, Bove EL. Techniques and results in the management of multiple ventricular septal defects. J Thorac Cardiovasc Surg 1998; 115:848-56. [PMID: 9576221 DOI: 10.1016/s0022-5223(98)70366-6] [Citation(s) in RCA: 117] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The management of patients with multiple ventricular septal defects remains controversial. Primary closure, interventional catheter techniques, and palliative surgery all may have a role, and specific management guidelines remain undefined. METHODS We reviewed the records of all 33 patients with multiple ventricular septal defects undergoing repair between January 1988 and October 1996. Pulmonary artery hypertension was present in 21 patients (group 1), and pulmonary stenosis was present in the remaining 12 (group 2). Closure was accomplished from a right atriotomy alone in most patients, although an apical left ventriculotomy was used for apical defects. Among group 1 patients, the mean age at repair was 5.9 +/- 0.9 months. Major associated anomalies included coarctation (n = 6), straddling tricuspid valve (n = 1), and critical aortic stenosis (n = 1). Reoperation was performed in two patients for residual ventricular septal defects. Among group 2 patients, the mean age at repair was 6.6 +/- 3.2 years. Major associated anomalies included tetralogy of Fallot (n = 2), pulmonary stenosis (n = 4), double-outlet right ventricle with hypoplastic left ventricle (n = 1), and isolated left ventricular hypoplasia (n = 1). Three required reoperation for residual ventricular septal defect. RESULTS There were no early or late deaths, no episodes of heart block, and no significant residual ventricular septal defects among group 1 patients. All group 1 patients remain free of significant residual cardiovascular conditions at a mean of 23.4 +/- 5.1 months. Among group 2 patients, there was one early death in a patient with double-outlet right ventricle and left ventricular hypoplasia. Complete heart block occurred in two patients and one required late mitral valve replacement. There were no late deaths, seven remain alive without significant residual defects at a mean of 36.2 +/- 8.0 months, and two required transplantation for left ventricular failure. CONCLUSIONS Primary repair for infants with multiple ventricular septal defects is associated with good late outcomes. The right atrial approach is satisfactory for most muscular defects, although limited apical left ventriculotomy was used for apical defects. Pulmonary artery banding should be limited to patients with complex associated defects.
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Affiliation(s)
- T Kitagawa
- Section of Thoracic Surgery, Pediatric Cardiovascular Surgery, C. S. Mott Children's Hospital, The University of Michigan School of Medicine, Ann Arbor 48109, USA
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Yang YJ, Wu JM, Luo CY. Tetralogy of Fallot with an additional muscular inlet type ventricular septal defect--repair with split patch technique. J Card Surg 1995; 10:586-8. [PMID: 7488784 DOI: 10.1111/j.1540-8191.1995.tb00638.x] [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: 01/25/2023]
Abstract
An 8-year-old girl with tetralogy of Fallot (TF) and double ventricular septal defects (VSDs) was reported. The additional VSD was a muscular inlet type. A split patch technique was used to cover both VSDs during the total correction. Follow-up echocardiogram demonstrated no residual shunt nor significant tricuspid valve regurgitation. The patient is doing well 2 years after operation.
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Affiliation(s)
- Y J Yang
- Department of Surgery, Medical College, National Cheng-Kung University, Tainan, Taiwan
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Leca F, Karam J, Vouhe PR, Khoury W, Tamisier D, Bical O, Da Cruz E, Thibert M. Surgical treatment of multiple ventricular septal defects using a biologic glue. J Thorac Cardiovasc Surg 1994. [DOI: 10.1016/s0022-5223(94)70458-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Serraf A, Lacour-Gayet F, Bruniaux J, Ouaknine R, Losay J, Petit J, Binet JP, Planché C, Kirklin JW. Surgical management of isolated multiple ventricular septal defects. J Thorac Cardiovasc Surg 1992. [DOI: 10.1016/s0022-5223(19)34982-7] [Citation(s) in RCA: 98] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bridges ND, Perry SB, Keane JF, Goldstein SA, Mandell V, Mayer JE, Jonas RA, Casteneda AR, Lock JE. Preoperative transcatheter closure of congenital muscular ventricular septal defects. N Engl J Med 1991; 324:1312-7. [PMID: 2017227 DOI: 10.1056/nejm199105093241903] [Citation(s) in RCA: 141] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Surgical repair of muscular ventricular septal defects, particularly those associated with complex heart lesions carries a higher risk of reoperation and death than the repair of membranous defects. Closing a muscular defect through an incision in the systemic ventricle may cause late ventricular dysfunction. In a collaborative approach to this problem, we undertook preoperative transcatheter closure of muscular ventricular septal defects remote from the atrioventricular and semilunar valves, followed by the surgical repair of associated conditions. METHODS In 12 patients selected jointly by a cardiologist and a cardiac surgeon, we attempted preoperative transcatheter umbrella closure of 21 defects. Half the patients had associated complex heart lesions; the others had had pulmonary-artery banding to reduce the amount of left-to-right shunting. Half had severe ventricular septal deficiency. RESULTS All 21 defects were successfully closed without major complications. Subsequent cardiac surgery for associated conditions in 11 of the 12 patients resulted in a mean pulmonary-to-systemic flow ratio of 1.1, indicating minimal residual left-to-right shunting; 1 patient awaited surgical repair. No deaths, reoperations, or late complications have occurred after a follow-up of 7 to 20 months. CONCLUSIONS A collaborative approach using transcatheter closure followed by the surgical repair of associated cardiac lesions may decrease rates of operative mortality, reoperation, and left ventricular dysfunction in patients with muscular ventricular septal defects.
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Affiliation(s)
- N D Bridges
- Department of Cardiology, Children's Hospital, Boston, MA 02115
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Sutherland GR, Smyllie JH, Ogilvie BC, Keeton BR. Colour flow imaging in the diagnosis of multiple ventricular septal defects. BRITISH HEART JOURNAL 1989; 62:43-9. [PMID: 2757873 PMCID: PMC1216729 DOI: 10.1136/hrt.62.1.43] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Thirty one patients with multiple ventricular septal defects were studied by cross sectional echocardiography, conventional pulsed and continuous wave Doppler, colour flow imaging, and left ventriculography to determine the relative diagnostic benefits and pitfalls of each technique. The patients studied had a wide range of congenital heart defects with 19 patients having isolated multiple ventricular septal defects, three with associated tetralogy of Fallot, five with double outlet right ventricle, three with complete transposition and ventricular septal defect, and one with a complete atrioventricular septal defect. In 23 patients the defects were inspected at operation. Cross sectional imaging with integrated pulsed and continuous wave Doppler correctly identified multiple defects in only 12 (39%) patients. In contrast, colour flow imaging was accurate in 24 (77%) patients and left ventriculography in 20 (65%) patients. When patients were subdivided on the basis of relative peak systolic ventricular pressures into restrictive defects (18 patients) and non-restrictive defects (13 patients) the diagnostic value of colour flow imaging was different for each group. Colour flow mapping correctly identified multiple ventricular septal defects in 16/18 (89%) patients with restrictive defects but only 8/13 (62%) with non-restrictive defects. The comparative diagnostic accuracy of left ventriculography was 15/18 (83%) in the restrictive group and 5/13 (38%) in the non-restrictive group. Colour flow imaging was the single investigative technique with the greatest diagnostic accuracy in the diagnosis of multiple ventricular septal defects. It failed to be consistently accurate in defined subgroups with non-restrictive defects as did left ventriculography. The greatest overall diagnostic accuracy in this series was obtained when both colour flow imaging and ventriculography techniques were used in combination in a complementary fashion.
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Affiliation(s)
- G R Sutherland
- Department of Paediatric Cardiology, Wessex Cardiothoracic Unit, Southampton General Hospital
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Affiliation(s)
- J Stark
- Hospital for Sick Children, London, England
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Griffiths SP, Turi GK, Ellis K, Krongrad E, Swift LH, Gersony WM, Bowman FO, Malm JR. Muscular ventricular septal defects repaired with left ventriculotomy. Am J Cardiol 1981; 48:877-86. [PMID: 7304435 DOI: 10.1016/0002-9149(81)90353-2] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Between 1974 and 1979 nine patients, aged 10 months to 4 years, underwent left ventriculotomy for closure of single or multiple defects in the muscular ventricular septum. The vertical incision paralleled the anterior descending branch of the left coronary artery near the apex of the left ventricle and ranged from 2.5 to 3.5 cm in length. Four patients also had a right ventriculotomy with closure of a high perimembranous ventricular defect in two. Serial electrocardiograms indicated changes of myocardial ischemia or necrosis. Left bundle branch block did not develop in any patient. Three patients died in the early postoperative period. The six surviving patients are living and well 2 to 7 years later. There is apparent complete closure of the ventricular defects, which was documented by cardiac catheterization in four cases. Two patients had cardiomegaly and left ventricular dysfunction as assessed with echocardiographic and angiographic study, whereas four displayed good cardiac function. In three of the latter patients, cardioplegia or deep hypothermia techniques were utilized intraoperatively. The observations indicate that left ventriculotomy of limited size is an acceptable approach to the difficult problem of repair of muscular ventricular defects but may involve some risk of compromise of the coronary circulation.
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Kirklin JK, Castaneda AR, Keane JF, Fellows KE, Norwood WI. Surgical management of multiple ventricular septal defects. J Thorac Cardiovasc Surg 1980. [DOI: 10.1016/s0022-5223(19)37735-9] [Citation(s) in RCA: 76] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Abstract
Among 79 autopsy specimens of heart with an isolated ventricular septal defect, there were 29 cases of muscular defect. Among 60 hearts with complete transposition of the great arteries and a ventricular septal defect, there were 13 cases with a muscular defect. All muscular defects could be classified in three different types, based on the specific pathologic anatomy of the ventricular septum. The central and posterior defects were usually large and single, the marginal defects were frequently small and multiple. In hearts with transposition, central muscular defects were extremely rare, whereas these defects were by far the most frequent muscular defects in isolated ventricular septal defect. Alternatively, the posterior type was more common in cases of transposition. Marginal muscular defects were rare in both groups of malformations.
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Fox KM, Patel RG, Graham GR, Taylor JF, Stark J, De Leval MR, Macartney FJ. Multiple and single ventricular septal defect. A clinical and haemodynamic comparison. BRITISH HEART JOURNAL 1978; 40:141-6. [PMID: 637965 PMCID: PMC482789 DOI: 10.1136/hrt.40.2.141] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Abstract
Multiple muscular ventricular septal defects were closed through an apical left ventriculotomy in 11 patients. The patients were divided into two groups: Group 1, 8 patients who had transposition of the great arteries, and group 2, 3 patients without transposition. There were 4 deaths in Group 1 and non in Group 2. Two of the deaths were caused by a hypoplastic right ventricle, 1 by airway obstruction, and 1 by heart failure and pulmonary edema in a patient who had additional unrecognized muscular defects. An apical left ventriculotomy provides excellent exposure of the septum. The field is not obscured by trabecular bands or papillary muscles. Although 1 patient died because of residual VSDs, this approach, compared with previously described methods, minimizes the risk of unrecognized defects.
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Singh AK, de Leval MR, Stark J. Left ventriculotomy for closure of muscular ventricular septal defects. Treatment of choice. Ann Surg 1977; 186:577-80. [PMID: 921351 PMCID: PMC1396314 DOI: 10.1097/00000658-197711000-00006] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Closure of muscular ventricular septal defects (VSDs) through the right atriotomy or right ventriculotomy may be difficult. These VSDs are often located behind the hypertrophied trabeculae carnae or papillary muscle. Residual or recurrent VSD may result from the difficult approach. Between March 1971 and December 1975, we have used the left ventriculotomy near the apex for closure of muscular VSDs in ten children. The patients' ages ranged from five months to eight years and three months. The diagnosis was established by cardiac catheterisation and left ventricular angiocardiogram in all patients. Six patients had multiple VSDs; in four patients VSD in the muscular septum was present (three apical, one midseptal). Operations were performed on cardiopulmonary bypass with moderate hypothermia and intermittent anoxic arrest. VSDs in the membranous septum were closed through the right atrium. Muscular VSDs were approached through a small vertical incision in the left ventricle near the apex. The postoperative course was uneventful in eight patients. Two patients, aged 16 months and eight years, died; histology showed grade IV pulmonary vascular disease in both. All survivors are well four months to five years after the operation, without clinical evidence of residual or recurrent VSD.
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Condon J, Parker FB, Webb WR. Ventricular septal defect due to septal infarction after repair of tetralogy of fallot. Ann Thorac Surg 1977; 23:158-62. [PMID: 836105 DOI: 10.1016/s0003-4975(10)64092-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A case is reported of ventricular septal defect resulting from septal infarction following repair of a tetralogy of Fallot. The infarct probably resulted from division of a septal coronary artery during resection of the hypertrophied infundibulum. The superficial position of the septal artery on the right side of the septum in tetralogy makes it surprising that this complication has not been previously reported.
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Abstract
Correction of the unique problem of congenital muscular ventricular septal defects is facilitated by approaching through an incision in the apex of the left ventricle parallel to the septum. This incision seems to be well tolerated by the heart, as borne out by our experience and that of others.
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