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Nguyen SN, Quaegebeur JM, Farooqi K, Bacha EA, Goldstone AB. Staged Ventricular Septation of the Double-Inlet Ventricle: How-I-Do-It. Semin Thorac Cardiovasc Surg Pediatr Card Surg Annu 2024; 27:86-91. [PMID: 38522878 DOI: 10.1053/j.pcsu.2024.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/18/2023] [Accepted: 01/12/2024] [Indexed: 03/26/2024]
Abstract
Ventricular septation of the double-inlet ventricle is a largely abandoned operation due to poor historical outcomes. However, there has been renewed interest in septation as an alternative to Fontan palliation given its long-term sequelae. As one of the few centers to revisit septation in the early 1990s, our institution has long-term data on a series of patients with a double-inlet ventricle who underwent biventricular repair. This manuscript is a summary of our approach to staged septation of the double-inlet ventricle, with a focus on patient selection criteria, surgical techniques, perioperative considerations on timing of interventions, and long-term results. We believe that septation of the double-inlet ventricle should be reconsidered in patients with suitable anatomy in light of the known complications of Fontan palliation.
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Affiliation(s)
- Stephanie N Nguyen
- Section of Pediatric and Congenital Cardiac Surgery, New York Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, New York, New York
| | - Jan M Quaegebeur
- Section of Pediatric and Congenital Cardiac Surgery, New York Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, New York, New York
| | - Kanwal Farooqi
- Division of Pediatric Cardiology, New York Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, New York, New York
| | - Emile A Bacha
- Section of Pediatric and Congenital Cardiac Surgery, New York Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, New York, New York
| | - Andrew B Goldstone
- Section of Pediatric and Congenital Cardiac Surgery, New York Presbyterian-Morgan Stanley Children's Hospital, Columbia University Irving Medical Center, New York, New York..
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Gittenberger-de Groot AC, Koenraadt WM, Bartelings MM, Bökenkamp R, DeRuiter MC, Hazekamp MG, Bogers AJC, Quaegebeur JM, Schalij MJ, Vliegen HW, Poelmann RE, Jongbloed MR. Coding of coronary arterial origin and branching in congenital heart disease: The modified Leiden Convention. J Thorac Cardiovasc Surg 2018; 156:2260-2269. [DOI: 10.1016/j.jtcvs.2018.08.009] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 07/15/2018] [Accepted: 08/02/2018] [Indexed: 11/16/2022]
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Salna M, Chai PJ, Kalfa D, Nakamura Y, Krishnamurthy G, Quaegebeur JM, Najjar M, Shah A, Levasseur S, Anderson BR, Bacha EA. Outcomes of the Arterial Switch Operation in ≤2.5-kg Neonates. Semin Thorac Cardiovasc Surg 2018; 31:488-493. [PMID: 29621622 DOI: 10.1053/j.semtcvs.2018.03.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/27/2018] [Indexed: 11/11/2022]
Abstract
Although low birth weight is a known risk factor for mortality in congenital heart lesions and may consequently delay surgical repair, outcomes in low-weight neonates undergoing the arterial switch operation (ASO) have not been well described. Our objective was to assess the safety of this procedure in infants weighing ≤2.5 kg at the time of surgery. We retrospectively analyzed outcomes for all neonates undergoing the ASO at our institution from 2005 to 2015. Our primary outcome of interest was major morbidity or operative mortality, assessed as a composite outcome. From 2005 to 2015, 217 neonates underwent the ASO, with 31 (14%) weighing ≤2.5 kg at the date of surgery, and 8 weighing <2.0 kg. Neonates weighing ≤2.5 kg were more likely to be premature than those weighing >2.5 kg, but there was no difference in the age at operation between these groups. Overall, 32 infants experienced a major morbidity or mortality, including 37.5% (n = 3) weighing <2.0 kg, 8.7% (n = 2) weighing 2.0-2.5 kg, and 14.5% (n = 7) weighing >2.5 kg (P = 0.141). One infant weighing <2.0 kg (1.1 kg) and 4 infants weighing >2.5 kg died. In multivariable models, odds of major morbidity or mortality were significantly higher for infants weighing <2 kg compared with infants weighing >2.5 kg (odds ratio 3.93, 95% confidence interval 1.04-14.85, P = 0.044), but there was no difference between infants weighing 2.0-2.5 kg and those weighing >2.5 kg (P = 0.225). The ASO can be performed safely in 2.0- to 2.5-kg neonates and yields results comparable with higher weight infants. Imposed delays for corrective surgery may not be necessary for these low-weight infants with transposition of the great arteries.
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Affiliation(s)
- Michael Salna
- Division of Cardiac, Thoracic and Vascular Surgery, Section of Pediatric and Congenital Cardiac Surgery, NewYork-Presbyterian/Morgan Stanley Children's Hospital, Columbia University College of Physicians and Surgeons, New York, New York
| | - Paul J Chai
- Division of Cardiac, Thoracic and Vascular Surgery, Section of Pediatric and Congenital Cardiac Surgery, NewYork-Presbyterian/Morgan Stanley Children's Hospital, Columbia University College of Physicians and Surgeons, New York, New York
| | - David Kalfa
- Division of Cardiac, Thoracic and Vascular Surgery, Section of Pediatric and Congenital Cardiac Surgery, NewYork-Presbyterian/Morgan Stanley Children's Hospital, Columbia University College of Physicians and Surgeons, New York, New York
| | - Yuki Nakamura
- Division of Cardiac, Thoracic and Vascular Surgery, Section of Pediatric and Congenital Cardiac Surgery, NewYork-Presbyterian/Morgan Stanley Children's Hospital, Columbia University College of Physicians and Surgeons, New York, New York
| | - Ganga Krishnamurthy
- Division of Neonatology, NewYork-Presbyterian/Morgan Stanley Children's Hospital, Columbia University Medical Center, New York, New York
| | - Jan M Quaegebeur
- Division of Cardiac, Thoracic and Vascular Surgery, Section of Pediatric and Congenital Cardiac Surgery, NewYork-Presbyterian/Morgan Stanley Children's Hospital, Columbia University College of Physicians and Surgeons, New York, New York
| | - Marc Najjar
- Department of Surgery, Columbia University College of Physicians and Surgeons, New York, New York
| | - Amee Shah
- Division of Pediatric Cardiology, NewYork-Presbyterian/Morgan Stanley Children's Hospital, Columbia University Medical Center, New York, New York
| | - Stephanie Levasseur
- Division of Pediatric Cardiology, NewYork-Presbyterian/Morgan Stanley Children's Hospital, Columbia University Medical Center, New York, New York
| | - Brett R Anderson
- Division of Pediatric Cardiology, NewYork-Presbyterian/Morgan Stanley Children's Hospital, Columbia University Medical Center, New York, New York
| | - Emile A Bacha
- Division of Cardiac, Thoracic and Vascular Surgery, Section of Pediatric and Congenital Cardiac Surgery, NewYork-Presbyterian/Morgan Stanley Children's Hospital, Columbia University College of Physicians and Surgeons, New York, New York.
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4
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Stephens EH, Tingo J, Najjar M, Yilmaz B, Levasseur S, Dayton JD, Mosca RS, Chai P, Quaegebeur JM, Bacha EA. Cardiac Function After Tetralogy of Fallot/Complete Atrioventricular Canal Repair. World J Pediatr Congenit Heart Surg 2017; 8:189-195. [PMID: 28329461 DOI: 10.1177/2150135116682719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Repair of complete atrioventricular canal (CAVC) with tetralogy of Fallot (TOF) is a challenging operation increasingly being performed as a complete, primary repair in infancy. Previous studies have focused on perioperative outcomes; however, midterm valve function, ventricular function, and residual obstruction have received little attention. METHODS We retrospectively reviewed 20 patients who underwent CAVC/TOF repair (January 2005 to December 2014). A two-patch repair was used in all patients to correct the CAVC defect. Tetralogy of Fallot repair included transannular patch in 11 (65%) patients and valve-sparing in 6 (35%) patients. RESULTS The average age at surgery was 72 ± 122 weeks, 40% were male, and 80% had trisomy 21. Mean echo follow-up was 3.0 ± 3.0 years. There were no in-hospital or late mortalities. The rate of reoperation was 20%. At the latest follow-up, moderate left atrioventricular valve regurgitation was present in three (15%) patients and mild stenosis present in seven (35%) patients. One (5%) patient had moderate right ventricular outflow tract (RVOT) obstruction. The valve-sparing population was smaller at the time of surgery than the non-valve-sparing cohort (body surface area: 0.28 ± 0.04 vs 0.42 ± 0.11, P = .002) and less likely to have had a previous shunt (0% vs 64%, P = .01). Among the valve-sparing patients (six), at the latest follow-up, moderate pulmonary insufficiency was present in two (33%) patients. CONCLUSION Repair of CAVC concomitant with TOF can be performed with low mortality and acceptable perioperative morbidity. Management of the RVOT remains a challenge for the long term.
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Affiliation(s)
- Elizabeth H Stephens
- 1 Division of Cardiac, Thoracic, and Vascular Surgery, Columbia University Medical Center, New York, NY, USA
| | - Jennifer Tingo
- 2 Division of Cardiology, St Christopher's Hospital for Children, Philadelphia, PA, USA
| | - Marc Najjar
- 1 Division of Cardiac, Thoracic, and Vascular Surgery, Columbia University Medical Center, New York, NY, USA
| | - Betul Yilmaz
- 3 Pediatric Cardiology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Stéphanie Levasseur
- 4 Division of Pediatric Cardiology, Columbia University Medical Center, New York, NY, USA
| | | | - Ralph S Mosca
- 6 Department of Cardiothoracic Surgery, New York University, New York, NY, USA
| | - Paul Chai
- 1 Division of Cardiac, Thoracic, and Vascular Surgery, Columbia University Medical Center, New York, NY, USA
| | - Jan M Quaegebeur
- 1 Division of Cardiac, Thoracic, and Vascular Surgery, Columbia University Medical Center, New York, NY, USA
| | - Emile A Bacha
- 1 Division of Cardiac, Thoracic, and Vascular Surgery, Columbia University Medical Center, New York, NY, USA
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Sen DG, Najjar M, Yilmaz B, Levasseur SM, Kalessan B, Quaegebeur JM, Bacha EA. Erratum to: Aiming to Preserve Pulmonary Valve Function in Tetralogy of Fallot Repair: Comparing a New Approach to Traditional Management. Pediatr Cardiol 2016; 37:990. [PMID: 27072543 DOI: 10.1007/s00246-016-1389-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Danielle Gottlieb Sen
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA.,Pediatric Cardiac Surgery, New Orleans Children's Hospital, New Orleans, LA, USA
| | - Marc Najjar
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA
| | - Betul Yilmaz
- Pediatric Cardiology, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA.,Pediatric Cardiology, Texas Children's Hospital, Houston, TX, USA
| | - Stéphanie M Levasseur
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA
| | - Bindu Kalessan
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA
| | - Jan M Quaegebeur
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA
| | - Emile A Bacha
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA.
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Sen DG, Najjar M, Yimaz B, Levasseur SM, Kalessan B, Quaegebeur JM, Bacha EA. Aiming to Preserve Pulmonary Valve Function in Tetralogy of Fallot Repair: Comparing a New Approach to Traditional Management. Pediatr Cardiol 2016; 37:818-25. [PMID: 26921062 DOI: 10.1007/s00246-016-1355-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Accepted: 02/09/2016] [Indexed: 11/25/2022]
Abstract
Pulmonary valve (PV) incompetence following transannular patch (TAP) repair of tetralogy of Fallot (TOF) results in long-term morbidity and mortality. Valve-sparing repairs have recently gained recognition; however, they may be associated with residual pulmonary stenosis (PS) in patients with small PV z scores. We sought to determine whether a repair that increases the PV annulus and augments the valve leaflet with a biomaterial would result in annular growth and in longer duration of valve competence compared with TAP. Eighty patients (median age 136 days, range 4-350) who underwent surgical repair of TOF between 2010 and 2014 were included in the study. Patients were divided into three groups based on the PV intervention: balloon dilation/valvotomy (n = 29), valve-sparing transannular repair (VSTAR) (n = 19) and TAP (n = 32). Intraoperative, early postoperative and midterm follow-up echocardiographic data (median 19 months, range 1-59) were obtained. The primary outcomes were the presence and severity of pulmonary regurgitation and/or PS. Compared with TAP, VSTAR patients demonstrated significantly less severe PR with 100 % freedom of severe PR immediately post-op (vs. 0 % in TAP), 60 % at 6 months and 20 % at 20 months. There were no differences in PS between VSTAR and TAP at follow-up. A subgroup analysis of the VSTAR group was performed. PV z scores were calculated and fit to a random effects model. Patient data fit the model closely, predicting a reproducible increase in valve annulus size over time. With better short-term and comparable midterm results, VSTAR may be appropriate for TOF repair in patients with small PV that would conventionally require a TAP.
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Affiliation(s)
- Danielle Gottlieb Sen
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA
- Pediatric Cardiac Surgery, New Orleans Children's Hospital, New Orleans, LA, USA
| | - Marc Najjar
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA
| | - Betul Yimaz
- Pediatric Cardiology, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA
- Pediatric Cardiology, Texas Children's Hospital, Houston, TX, USA
| | - Stéphanie M Levasseur
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA
| | - Bindu Kalessan
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA
| | - Jan M Quaegebeur
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA
| | - Emile A Bacha
- Pediatric Cardiac Surgery, Morgan Stanley Children's Hospital of New York-Presbyterian, Columbia University, New York, NY, USA.
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Marshall CD, Weigand J, Sambatakos P, Hayes DA, Chen JM, Quaegebeur JM, Bacha E, Richmond ME. Repair of Anomalous Left Coronary Artery From the Right Pulmonary Artery: A Series of Nine Cases. World J Pediatr Congenit Heart Surg 2016; 6:382-6. [PMID: 26180152 DOI: 10.1177/2150135115579918] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Repair of anomalous left coronary artery from the right pulmonary artery presents a particular technical challenge to the congenital cardiac surgeon. There is disagreement in the literature over the optimal technique for this defect, with some authors advocating for unroofing of the periaortic segment of coronary artery, while others prefer direct aortic reimplantation of the artery. METHODS We performed a retrospective study examining outcomes of patients who were repaired for this anomaly at our institution. In-hospital and outpatient follow-up data were analyzed. RESULTS Nine patients were identified. Most patients had poor left ventricular function at the time of surgery. All patients in our series were repaired using the direct coronary transfer technique. To date there were no mortalities among the study participants. At last follow-up, all patients with available echocardiograms had normal ventricular function. One patient required reoperation for anastomotic stenosis. CONCLUSIONS We demonstrate that using the technique of direct coronary transfer to the aorta, we have achieved excellent results with repair of this defect.
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Affiliation(s)
- Clement D Marshall
- Division of Cardiothoracic and Vascular Surgery, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital of NewYork-Presbyterian, New York, NY, USA
| | - Justin Weigand
- Division of Pediatric Cardiology, Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - Peter Sambatakos
- Division of Pediatric Cardiology, Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - Denise A Hayes
- Division of Pediatric Cardiology, Columbia University College of Physicians and Surgeons, New York, NY, USA
| | - Jonathan M Chen
- Division of Cardiothoracic and Vascular Surgery, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital of NewYork-Presbyterian, New York, NY, USA
| | - Jan M Quaegebeur
- Division of Cardiothoracic and Vascular Surgery, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital of NewYork-Presbyterian, New York, NY, USA
| | - Emile Bacha
- Division of Cardiothoracic and Vascular Surgery, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital of NewYork-Presbyterian, New York, NY, USA
| | - Marc E Richmond
- Division of Pediatric Cardiology, Columbia University College of Physicians and Surgeons, New York, NY, USA
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Gerrah R, Turner ME, Gottlieb D, Quaegebeur JM, Bacha E. Repair of Tetralogy of Fallot in Children Less Than 4 kg Body Weight. Pediatr Cardiol 2015; 36:1344-9. [PMID: 25835203 DOI: 10.1007/s00246-015-1163-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Accepted: 03/26/2015] [Indexed: 10/23/2022]
Abstract
We reviewed our experience of surgical repair of Tetralogy of Fallot (TOF) in children weighing less than or equal to 4 kg to compare outcome of early palliation versus complete repair as the initial surgical approach. Seventy-six patients, weighing ≤ 4 kg, with TOF surgery between January 2005 and September 2013 were included in this single-center retrospective study. Twenty-five patients who underwent initial shunt procedure followed by later full repair were compared to 51 patients who had primary full repair for differences in baseline characteristics and outcomes. Shunt group patients had lower body weight, 2.76 ± 0.69 versus 3.11 ± 0.65 (kg), p = 0.03, and lower preoperative oxygen saturations, 82 ± 7 versus 90 ± 6 (%), p = 0.0001, than full repair group. A higher number of surgical procedures per patient was recorded in shunt patients, 2.29 ± 0.59 versus 1.27 ± 0.49, p = 0.00002. Thirteen of 51 patients in the full repair group required a repeat surgery. Catheterization procedures were performed in 12 patients in shunt and in 15 patients in full repair group, with interventional angioplasty in three and 11, respectively, p ≥ 0.05. Two patients, both in the shunt group, died after the surgery. Early full repair had longer hospital stay but significantly less hospitalizations 1.95 ± 1.3 versus 2.5 ± 1.4, p = 0.03. Initial complete repair of TOF in small children yielded favorable outcome with significantly less surgical procedures and subsequent hospitalizations. Cath laboratory re-interventions for residual defects were similar after both surgical approaches, and type of initial surgery does not predict freedom from re-intervention.
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Affiliation(s)
- Rabin Gerrah
- Division of Cardiothoracic Surgery, Department of Surgery, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital of New York-Presbyterian, New York, NY, USA
| | - Mariel E Turner
- Division of Pediatric Cardiology, Department of Pediatrics, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital of New York-Presbyterian, 3959 Broadway, 2 North, New York, NY, 10032, USA.
| | - Danielle Gottlieb
- Division of Cardiothoracic Surgery, Department of Surgery, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital of New York-Presbyterian, New York, NY, USA
| | - Jan M Quaegebeur
- Division of Cardiothoracic Surgery, Department of Surgery, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital of New York-Presbyterian, New York, NY, USA
| | - Emile Bacha
- Division of Cardiothoracic Surgery, Department of Surgery, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital of New York-Presbyterian, New York, NY, USA
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9
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Anderson BR, Ciarleglio AJ, Hayes DA, Quaegebeur JM, Vincent JA, Bacha EA. Earlier Arterial Switch Operation Improves Outcomes and Reduces Costs for Neonates With Transposition of the Great Arteries. J Am Coll Cardiol 2014; 63:481-7. [DOI: 10.1016/j.jacc.2013.08.1645] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 08/06/2013] [Indexed: 10/26/2022]
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Rekik S, Jacq L, Bourlon F, Bernasconi F, Quaegebeur JM, Dreyfus G. Large compressive proximal pseudoaneurysm after ascending-to-descending aortic bypass in a 62 year-old patient with severe aortic coarctation: first reported case. Int J Cardiol 2014; 172:e453-7. [PMID: 24491869 DOI: 10.1016/j.ijcard.2014.01.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Revised: 12/30/2013] [Accepted: 01/01/2014] [Indexed: 10/25/2022]
Affiliation(s)
- Sofiene Rekik
- Cardiology Department, Antibes Hospital Center, France.
| | - Laurent Jacq
- Cardiology Department, Antibes Hospital Center, France
| | | | | | - Jan M Quaegebeur
- Division of Cardiothoracic Surgery, Columbia University College of Physicians and Surgeons, NY, USA
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Turner ME, Richmond ME, Quaegebeur JM, Shah A, Chen JM, Bacha EA, Vincent JA. Intact right ventricle-pulmonary artery shunt after stage 2 palliation in hypoplastic left heart syndrome improves pulmonary artery growth. Pediatr Cardiol 2013; 34:924-30. [PMID: 23229288 DOI: 10.1007/s00246-012-0576-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 10/11/2012] [Indexed: 10/27/2022]
Abstract
For patients with hypoplastic left heart syndrome who have undergone the Norwood procedure with a right ventricle-pulmonary artery (RV-PA) shunt, the shunt can either be removed or left intact at the time of the stage 2 procedure. This study aimed to determine the effects of an intact shunt on pulmonary artery growth and clinical outcomes after the stage 2 procedure. A retrospective review of patients who underwent Norwood with an RV-PA shunt from 2005 to 2010 was performed. Catheterization data, echocardiographic data, postoperative outcome variables, and mortality data were collected. Pulmonary artery size was measured at pre-stage 2 and pre-Fontan catheterizations using the Nakata Index and the McGoon Ratio. Of the 68 patients included in the study, 48 had the shunt removed at the time of stage 2 (group 1), and 20 had the shunt left intact (group 2). The two groups did not differ in terms of pre-stage 2 hemodynamics or pulmonary artery size. After stage 2, group 2 had higher oxygen saturations. The two groups did not differ regarding duration of chest tube drainage, length of hospital stay, need for unplanned interventions, or mortality. Before Fontan, the group 2 patients had higher superior vena cava (SVC) pressures and more venovenous collaterals closed. There was increased pulmonary artery growth between the pre-stage 2 and pre-Fontan catheterizations in group 2 using both the Nakata Index (+148.5 vs -52.4 mm(2)/m(2); p = 0.01) and the McGoon Ratio (+0.36 vs +0.01; p = 0.01). These findings indicate that patients with an intact RV-PA shunt after stage 2 have greater pulmonary artery growth than patients with the shunt removed, with no increased risk of complications.
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Affiliation(s)
- Mariel E Turner
- Division of Pediatric Cardiology, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital of New York-Presbyterian, 3959 Broadway, 2 North, New York, NY 10032, USA.
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13
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Elder RW, Quaegebeur JM, Bacha EA, Chen JM, Bourlon F, Williams IA. Outcomes of the infant Ross procedure for congenital aortic stenosis followed into adolescence. J Thorac Cardiovasc Surg 2012; 145:1504-11. [PMID: 23062969 DOI: 10.1016/j.jtcvs.2012.09.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2012] [Revised: 07/24/2012] [Accepted: 09/12/2012] [Indexed: 11/24/2022]
Abstract
OBJECTIVES The Ross procedure is used to treat aortic valve disease in children. The advantages include autograft growth, long-term durability, and avoidance of anticoagulation. Long-term follow-up of the Ross procedure in infancy is limited. We sought to characterize the long-term outcomes of infants undergoing the Ross procedure. METHODS We performed a retrospective review of all patients who underwent a Ross operation at 18 months of age or younger at New-York Presbyterian and Cardiothoracic Center of Monaco from 1991 to 2010. The clinical, catheterization, and surgical records were reviewed. The most recent follow-up information, including echocardiogram and electrocardiogram, was obtained and analyzed. RESULTS A total of 34 patients underwent a Ross procedure at a median age of 6 months (range, 4 days to 18.4 months). All had congenital aortic stenosis. All but 1 patient had undergone previous surgical or catheter-based interventions. The median follow-up was 10.6 years (range, 1.4-20.4 years). There were 4 early deaths and 1 late transplant. The freedom from right ventricular outflow tract reintervention was 85% at 5 years and 64% at 10 years. The freedom from autograft reintervention was 95.5% at 10 years. In 20 subjects, late follow-up echocardiograms showed a significant difference between the mean early and late Z scores of the autograft annulus (0.8 vs 2.4, P = .03), sinus (0.8 vs 2.8, P = .002), and sinotubular junction (1.2 vs 2.7, P = .04). Mild or less aortic insufficiency occurred in 17 subjects. None had significant aortic stenosis. CONCLUSIONS The long-term outcomes of the Ross procedure in infants and toddlers are favorable despite moderate dilatation of the autograft. Reintervention at the right ventricular outflow tract is common.
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Affiliation(s)
- Robert W Elder
- Division of Pediatric Cardiology, Department of Pediatrics, Columbia University College of Physicians and Surgeons, Morgan Stanley Children's Hospital of New York-Presbyterian, New York, NY 10032-3784, USA.
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Richmond ME, Charette K, Chen JM, Quaegebeur JM, Bacha E. The effect of cardiopulmonary bypass prime volume on the need for blood transfusion after pediatric cardiac surgery. J Thorac Cardiovasc Surg 2012; 145:1058-1064. [PMID: 22867689 DOI: 10.1016/j.jtcvs.2012.07.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Revised: 05/22/2012] [Accepted: 07/10/2012] [Indexed: 12/31/2022]
Abstract
OBJECTIVE There is increasing awareness that erythrocyte transfusions after pediatric cardiac surgery have deleterious effects. Despite reports of decreased transfusion requirements associated with smaller cardiopulmonary bypass circuits, the relationship between circuit prime volume and need for transfusion has not been systematically examined. METHODS Pediatric patients at our institution who underwent cardiopulmonary bypass between January 2005 and December 2010 were reviewed. Demographics, intraoperative data, and transfusion of packed red blood cells were retrospectively recorded. Cardiopulmonary bypass prime volume was indexed by patient body surface area. Logistic regression analysis was used to correlate these variables with need for transfusion. RESULTS In the perioperative period, 1912 patients received transfusions and 266 did not. In univariate analysis, indexed prime volume was a significant predictor of transfusion (odds ratio, 1.007; P < .001). Other significant variables in univariate analysis included age, surgeon, Risk Adjustment for Congenital Heart Surgery 1 (RACHS-1) category, preoperative hemoglobin, total bypass time, aortic crossclamp time, use and duration of deep hypothermic circulatory arrest, lowest body core temperature, and cardiopulmonary bypass flow rate. Previous cardiac surgery was not a significant predictor. In multivariable analysis controlling for RACHS-1 category, surgeon, minimal core body temperature, and preoperative hemoglobin, indexed prime volume remained an independent predictor of transfusion (odds ratio, 1.006; 95% confidence interval, 1.005-1.007, P < .001). CONCLUSIONS Perioperative need for transfusion in pediatric cardiac surgical patients is independently related to the prime volume of the cardiopulmonary bypass circuit. It therefore seems prudent to minimize circuit prime volumes to avoid unnecessary use of blood products.
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Affiliation(s)
- Marc E Richmond
- Division of Pediatric Cardiology, Department of Pediatrics, Columbia University College of Physicians and Surgeons, New York, NY.
| | - Kevin Charette
- Division of Pediatric and Congenital Cardiac Surgery, Department of Surgery, Columbia University College of Physicians and Surgeons, New York, NY
| | - Jonathan M Chen
- Division of Pediatric and Congenital Cardiac Surgery, Department of Surgery, Columbia University College of Physicians and Surgeons, New York, NY
| | - Jan M Quaegebeur
- Division of Pediatric and Congenital Cardiac Surgery, Department of Surgery, Columbia University College of Physicians and Surgeons, New York, NY
| | - Emile Bacha
- Division of Pediatric and Congenital Cardiac Surgery, Department of Surgery, Columbia University College of Physicians and Surgeons, New York, NY
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Davies RR, Sorabella RA, Yang J, Mosca RS, Chen JM, Quaegebeur JM. Outcomes after transplantation for “failed” Fontan: A single-institution experience. J Thorac Cardiovasc Surg 2012; 143:1183-1192.e4. [DOI: 10.1016/j.jtcvs.2011.12.039] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Revised: 09/23/2011] [Accepted: 12/14/2011] [Indexed: 10/28/2022]
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Richmond ME, Hsu DT, Mosca RS, Chen J, Quaegebeur JM, Addonizio LJ, Lamour JM. Outcomes in pediatric cardiac transplantation with a positive HLA cross-match. Pediatr Transplant 2012; 16:29-35. [PMID: 22017728 DOI: 10.1111/j.1399-3046.2011.01555.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Previous studies have shown poor outcomes in pediatric heart transplant recipients with a high PRA or a positive direct donor-recipient cross-match. This study describes outcomes in patients with a positive cross-match at a large pediatric program. Pediatric heart transplant patients at a large single center between January 1993 and July 2009 were reviewed; those with cross-match data were analyzed. Cross-match data were available in 242/262 (92.4%) patients. Indications for transplant were cardiomyopathy (58%), CHD (32%), and retransplant (7%). PRA was ≥10% in 31/213 (14.6%) patients. A retrospective cross-match was positive in 17/31 (55%) patients with PRA ≥10% and 0/182 with PRA <10%. In positive cross-match patients, rejection frequency in the first year post-transplant was higher than negative cross-match patients (1.69 vs. 0.96 episodes/pt year, p = 0.014). There was no difference in rejection frequency after the first year post-transplant (0.18 vs. 0.12 episodes/pt year, p = 0.14). Overall survival was not significantly different between the groups with a median follow-up time of 4.5 yr. Heart transplantation in patients with a positive cross-match may result in good medium-term survival but a higher frequency of early rejection. Further investigation is warranted to define which patients with a positive cross-match will do poorly.
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Affiliation(s)
- Marc E Richmond
- Division of Pediatric Cardiology, Department of Pediatrics, Morgan Stanley Children's Hospital of New York Presbyterian, College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA.
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Rafii DY, Davies RR, Carroll SJ, Quaegebeur JM, Chen JM. Age Less Than Two Years Is Not a Risk Factor for Mortality After Mitral Valve Replacement in Children. Ann Thorac Surg 2011; 91:1228-34. [DOI: 10.1016/j.athoracsur.2010.11.058] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Revised: 11/18/2010] [Accepted: 11/23/2010] [Indexed: 11/28/2022]
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Abstract
Background—
An increasing number of patients with congenital heart disease (CHD) are reaching adulthood and may require heart transplantation. The survival of these patients after listing and transplantation has not been evaluated.
Methods and Results—
A total of 41 849 patients (aged >18 years) were listed for primary transplantation during 1995–2009. Patients with a history of CHD (n=1035; 2.5%) were compared with those with other causes (non-CHD group) (n=40 814; 97.5%); 26 055 (62.3%) reached transplantation and were subdivided into those with (reoperation group; n=10 484; 40.2%) and without (nonreoperation group; n=15 571; 59.8%) a previous sternotomy. Survival on the waiting list was similar between groups, but mechanical ventricular assistance was not associated with superior survival to transplantation among CHD patients. CHD patients were more likely to have body mass index <18.5 at transplantation (
P
<0.0001), were younger, and had fewer comorbidities. Early mortality among patients with CHD was high (reoperation, 18.9% versus 9.6%;
P
<0.0001; nonreoperation, 16.6% versus 6.3%;
P
<0.0001), but by 10 years, overall survival was equivalent (53.8% versus 53.6%). Analysis was limited by the lack of specific information regarding the CHD diagnosis in most patients.
Conclusions—
Adults with CHD have high 30-day mortality but better late survival after heart transplantation. Mechanical circulatory assistance does not improve waiting list survival in these patients. This may be due to a combination of highly complex reoperative surgery and often poor preoperative systemic health.
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Affiliation(s)
- Ryan R. Davies
- From the Departments of Surgery, Columbia University Medical Center (M.J.R., J.Y., J.M.Q.), New York University Langone Medical Center (R.S.M.), and Weill Medical College of Cornell University (J.M.C.), New York, NY; and Department of Cardiothoracic Surgery, Lucille-Packard Children's Hospital/Stanford University, Palo Alto, CA (R.R.D.)
| | - Mark J. Russo
- From the Departments of Surgery, Columbia University Medical Center (M.J.R., J.Y., J.M.Q.), New York University Langone Medical Center (R.S.M.), and Weill Medical College of Cornell University (J.M.C.), New York, NY; and Department of Cardiothoracic Surgery, Lucille-Packard Children's Hospital/Stanford University, Palo Alto, CA (R.R.D.)
| | - Jonathan Yang
- From the Departments of Surgery, Columbia University Medical Center (M.J.R., J.Y., J.M.Q.), New York University Langone Medical Center (R.S.M.), and Weill Medical College of Cornell University (J.M.C.), New York, NY; and Department of Cardiothoracic Surgery, Lucille-Packard Children's Hospital/Stanford University, Palo Alto, CA (R.R.D.)
| | - Jan M. Quaegebeur
- From the Departments of Surgery, Columbia University Medical Center (M.J.R., J.Y., J.M.Q.), New York University Langone Medical Center (R.S.M.), and Weill Medical College of Cornell University (J.M.C.), New York, NY; and Department of Cardiothoracic Surgery, Lucille-Packard Children's Hospital/Stanford University, Palo Alto, CA (R.R.D.)
| | - Ralph S. Mosca
- From the Departments of Surgery, Columbia University Medical Center (M.J.R., J.Y., J.M.Q.), New York University Langone Medical Center (R.S.M.), and Weill Medical College of Cornell University (J.M.C.), New York, NY; and Department of Cardiothoracic Surgery, Lucille-Packard Children's Hospital/Stanford University, Palo Alto, CA (R.R.D.)
| | - Jonathan M. Chen
- From the Departments of Surgery, Columbia University Medical Center (M.J.R., J.Y., J.M.Q.), New York University Langone Medical Center (R.S.M.), and Weill Medical College of Cornell University (J.M.C.), New York, NY; and Department of Cardiothoracic Surgery, Lucille-Packard Children's Hospital/Stanford University, Palo Alto, CA (R.R.D.)
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Davies RR, Russo MJ, Hong KN, Mital S, Mosca RS, Quaegebeur JM, Chen JM. Increased Short- and Long-term Mortality at Low-volume Pediatric Heart Transplant Centers. Ann Surg 2011; 253:393-401. [DOI: 10.1097/sla.0b013e31820700cc] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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20
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Hirata Y, Quaegebeur JM, Mosca RS, Takayama H, Chen JM. Impact of aortic annular size on rate of reoperation for left ventricular outflow tract obstruction after repair of interrupted aortic arch and ventricular septal defect. Ann Thorac Surg 2010; 90:588-92. [PMID: 20667355 DOI: 10.1016/j.athoracsur.2010.04.065] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Revised: 04/13/2010] [Accepted: 04/15/2010] [Indexed: 11/19/2022]
Abstract
BACKGROUND The neonatal repair of interrupted aortic arch and ventricular septal defect (IAA/VSD) presents a surgical challenge. Although one-stage repair has become well established, left ventricular outflow tract obstruction (LVOTO) continues to be an important factor affecting survival and reintervention rates after IAA/VSD repair. We investigated the relationship between the preoperative aortic annulus and the rates of reoperation for LVOTO. METHODS Between July 1994 and July 2006, 38 patients with IAA/VSD have undergone complete single-stage repair. Patients with single ventricle physiology, transposition of the great arteries, or truncus arteriosus were excluded. Surgical technique involved the aortic arch reconstruction and VSD closure. Three patients underwent subaortic resection at the time of first operation and one patient underwent Yasui operation. The patients were divided into two groups according to whether the aortic annulus is greater than the patient's weight (kg) + 1.5 mm or less. RESULTS The average follow-up was 7.9 +/- 4.2 years. Among the patients with small aortic annulus (n = 12), there was one hospital death and 6 reoperations for LVOTO, and one late death. There was only one reoperation for LVOTO among the patients with larger aortic annulus (n = 26, p < 0.001). The patients whose aortic annulus is less than patient's weight (kg) + 1.0 mm had poor outcomes if the LVOTO is not addressed at the time of the first operation. CONCLUSIONS Neonatal single-stage repair for IAA/VSD achieves excellent survival. For the patients whose aortic annulus is greater than patient's weight (kg) + 1.5 mm, low reoperation rate for LVOTO is expected. For the patient whose aortic annulus is less than patient's weight + 1.5 mm, almost half of them needed reoperation. An LVOT bypass procedure (Yasui or Norwood) is recommended if the aortic annulus is less than the patient's weight + 1.0 mm.
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Affiliation(s)
- Yasutaka Hirata
- The Division of Cardiothoracic Surgery, National Medical Center for Children and Mothers, 2-10-1, Okura, Setagaya-ku, Tokyo, Japan.
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21
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Gupta-Malhotra M, Kern JH, Flynn PA, Schiller MS, Quaegebeur JM, Friedman DM. Early pleural effusions related to the myocardial injury after open-heart surgery for congenital heart disease. CONGENIT HEART DIS 2010; 5:256-61. [PMID: 20576044 DOI: 10.1111/j.1747-0803.2010.00403.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The degree of effusion immediately after cardiopulmonary bypass (CPB) can vary and may reflect several factors including the degree of myocardial injury. We compared the degree of pleural effusions after CPB to the overall myocardial injury as determined by serum cardiac troponin I (cTnI) levels after elective repair of a variety of congenital heart defects, including univentricular surgeries via cavopulmonary shunts. METHODS Serum was collected pre-CPB, post-CPB, and daily after that and cTnI level measured. The postoperative pleural effusion was measured each day until the chest tube was removed. Results. The 21 study patients were of average age of 5.5 years (+/-5.6). The duration of chest-tube drainage after open-heart surgery was 4.3 days (+/-3.5) and the amount was 2.4 mL/kg/hour (+/-2.9). For the biventricular repairs, cTnI levels on the postoperative day (POD) 1 best correlated with amount of effusion (n = 16, r = 0.5, P = 0.02) and the average (POD 0-3) cTnI levels with the total duration (n = 16, r = 0.4, P = 0.01) and also the amount (n = 16, r = 0.5, P = 0.02) of effusions. For the cavopulmonary shunts, the post-CBP cTnI level best correlated with the duration (n = 5, r = 0.8, P = 0.02) and amount (n = 5, r = 0.9, P = 0.02) of effusions. A cTnI level on the first postoperative day >or=15 microg/L was associated with effusions >2 days (sensitivity of 81% and specificity of 80%). CONCLUSION We found that higher the cTnI released, especially >or=15 microg/L, longer the duration and greater the amount of early pleural effusions for a variety of congenital heart surgeries including cavopulmonary shunts. A number of factors may lead to excessive pleural effusions and the degree of myocardial injury may be one of them.
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Affiliation(s)
- Monesha Gupta-Malhotra
- Division of Pediatric Cardiology, The New York Presbyterian Hospital, Weill Medical College of Cornell University and College of Physicians and Surgeons of Columbia University, New York, USA.
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22
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Hirata Y, Chen JM, Quaegebeur JM, Mosca RS. The role of enucleation with or without septal myectomy for discrete subaortic stenosis. J Thorac Cardiovasc Surg 2009; 137:1168-72. [DOI: 10.1016/j.jtcvs.2008.11.039] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2008] [Revised: 10/01/2008] [Accepted: 11/24/2008] [Indexed: 11/26/2022]
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23
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Affiliation(s)
- Ralph S Mosca
- Department of Surgery, Division of Cardiothoracic Surgery, Columbia University College of Physicians and Surgeons, New York, USA
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24
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Richmond ME, Cabreriza SE, Van Batavia JP, Quinn TA, Kanter JP, Weinberg AD, Mosca RS, Quaegebeur JM, Spotnitz HM. Direction of preoperative ventricular shunting affects ventricular mechanics after Tetralogy of Fallot repair. Circulation 2008; 118:2338-44. [PMID: 19015406 DOI: 10.1161/circulationaha.107.761080] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Tetralogy of Fallot (TOF) typically results in clinical cyanosis or volume overload of the left ventricle (LV), depending on the direction and magnitude of shunting across the ventricular septal defect (VSD). The present study examines the effects of surgical TOF repair on LV mechanics and compares these changes between patients with VSD shunts that are predominantly right-to-left (R-L; "blue TOF") and those with VSD shunts that are predominantly left-to-right (L-R; "pink TOF"). METHODS AND RESULTS Eleven patients (6 R-L and 5 L-R) 4.3 to 18.4 months old (median 7.1 months old) were studied. LV end-diastolic area (EDA) was calculated from transesophageal echocardiograms obtained during initiation and weaning of cardiopulmonary bypass. LV end-diastolic pressure was measured by micromanometer. Compliance was assessed by end-diastolic pressure-area curves. Contractility was assessed from preload recruitable stroke work by the stroke work-versus-LV EDA relation. VSD shunt direction was determined by preoperative Doppler echocardiography. Changes in LV function at the conclusion of cardiopulmonary bypass included decreased stroke area (from 6.6 +/- 0.9 to 4.1 +/- 0.4 cm(2)/m(2), P=0.012) and ejection fraction (from 55 +/- 2% to 41 +/- 3%, P<0.001). LV EDA at a common pressure in 8 patients decreased (from 10.4 +/- 1.4 to 7.6 +/- 1.2 cm(2)/m(2), P=0.003), which suggests a decrease in ventricular compliance. Additionally, the end-diastolic pressure-area curves shifted to the left in all patients. Preload recruitable stroke work decreased (from 34.8 +/- 2.4 to 21.8 +/- 2.6 mm Hg, P=0.007), which demonstrates a decrease in ventricular contractility. When separated by preoperative shunt direction, LV EDA increased in R-L patients by 0.9+/-0.5 cm(2)/m(2) postoperatively but decreased in L-R patients by 4.3 +/- 0.8 cm(2)/m(2) (P<0.001). Area ejection fraction decreased in all patients independent of shunting or change in LV EDA. CONCLUSIONS LV diastolic and systolic function are depressed after TOF repair. Mechanical effects of the VSD patch and myocardial depressant effects of ischemia and reperfusion during surgery probably contribute to the observed changes in LV mechanics. Different effects of surgical repair on LV preload in pink and blue TOF also contribute to the spectrum of clinical results observed after surgery.
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Affiliation(s)
- Marc E Richmond
- Department of Surgery Pediatrics, Columbia University College of Physicians & Surgeons, New York, NY 10032, USA
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25
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Hirata Y, Charette K, Mosca RS, Quaegebeur JM, Chen JM. Pediatric Application of the Thoratec CentriMag BiVAD as a Bridge to Heart Transplantation. J Thorac Cardiovasc Surg 2008; 136:1386-7. [DOI: 10.1016/j.jtcvs.2008.05.028] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2007] [Revised: 02/29/2008] [Accepted: 05/04/2008] [Indexed: 11/30/2022]
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26
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Ceresnak SR, Quaegebeur JM, Pass RH, Hordof AJ, Liberman L. The Palliative Arterial Switch Procedure for Single Ventricles: Are These Patients Suitable Fontan Candidates? Ann Thorac Surg 2008; 86:583-7. [DOI: 10.1016/j.athoracsur.2008.04.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2007] [Revised: 04/04/2008] [Accepted: 04/07/2008] [Indexed: 11/29/2022]
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Bograd AJ, Mital S, Schwarzenberger JC, Mosca RS, Quaegebeur JM, Addonizio LJ, Hsu DT, Lamour JM, Chen JM. Twenty-year experience with heart transplantation for infants and children with restrictive cardiomyopathy: 1986-2006. Am J Transplant 2008; 8:201-7. [PMID: 17973960 DOI: 10.1111/j.1600-6143.2007.02027.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Idiopathic restrictive cardiomyopathy (RCM) is a rare cardiomyopathy in children notable for severe diastolic dysfunction and progressive elevation of pulmonary vascular resistance (PVR). Traditionally, those with pulmonary vascular resistance indices (PVRI) >6 W.U. x m(2) have been precluded from heart transplantation (HTX). The clinical course of all patients transplanted for RCM between 1986 and 2006 were reviewed. Preoperative, intraoperative and postoperative variables were evaluated. A total of 23 patients underwent HTX for RCM, with a mean age of 8.8 +/- 5.6 years and a mean time from listing to HTX of 43 +/- 60 days. Preoperative and postoperative (114 +/- 40 days) PVRI were 5.9 +/- 4.4 and 2.9 +/- 1.5 W.U. x m(2), respectively. At time of most recent follow-up (mean = 5.7 +/- 4.6 years), the mean PVRI was 2.0 +/- 1.0 W.U. x m(2). Increasing preoperative mean pulmonary artery pressure (PA) pressure (p = 0.04) and PVRI > 6 W.U. x m(2) (chi(2)= 7.4, p < 0.01) were associated with the requirement of ECMO postoperatively. Neither PVRI nor mean PA pressure was associated with posttransplant mortality; 30-day and 1-year actuarial survivals were 96% and 86%, respectively. Five of the seven patients with preoperative PVRI > 6 W.U. x m(2) survived the first postoperative year. We report excellent survival for patients undergoing HTX for RCM despite the high proportion of high-risk patients.
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Affiliation(s)
- A J Bograd
- Division of Cardiothoracic Surgery, Department of Surgery, College of Physicians and Surgeons, Columbia University, New York, NY, USA
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28
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Davies RR, Russo MJ, Mital S, Martens TM, Sorabella RS, Hong KN, Gelijns AC, Moskowitz AJ, Quaegebeur JM, Mosca RS, Chen JM. Predicting survival among high-risk pediatric cardiac transplant recipients: An analysis of the United Network for Organ Sharing database. J Thorac Cardiovasc Surg 2008; 135:147-55, 155.e1-2. [DOI: 10.1016/j.jtcvs.2007.09.019] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2007] [Revised: 08/21/2007] [Accepted: 09/06/2007] [Indexed: 01/15/2023]
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29
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Gray RG, Altmann K, Mosca RS, Prakash A, Williams IA, Quaegebeur JM, Chen JM. Persistent antegrade pulmonary blood flow post-glenn does not alter early post-Fontan outcomes in single-ventricle patients. Ann Thorac Surg 2007; 84:888-93; discussion 893. [PMID: 17720395 DOI: 10.1016/j.athoracsur.2007.04.105] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2007] [Revised: 04/23/2007] [Accepted: 04/24/2007] [Indexed: 11/17/2022]
Abstract
BACKGROUND The bidirectional Glenn cavopulmonary anastomosis (BDG) represents the standard interim procedure in treatment of patients with single-ventricle physiology. Anterograde pulmonary blood flow (APBF) maintained after BDG has been shown both to improve and to complicate postoperative clinical course. We studied its effects on outcome after BDG and eventual Fontan completion. METHODS From November 1995 to November 2005, 60 patients underwent BDG and Fontan. All patients had APBF from the ventricle to the pulmonary artery at time of BDG. In group 1 (n = 39) APBF was maintained after BDG, whereas APBF was interrupted at BDG in group 2 (n = 21). Cardiac catheterization data, interstage morbidity, and postoperative outcome variables were recorded. RESULTS Pre-BDG hemodynamics differed only in that the mean pulmonary artery pressure was higher in group 2 (17.0 +/- 4.4 mm Hg) than in group 1 (13.8 +/- 4.5 mm Hg; p = 0.03). There were no differences between groups 1 and 2 in BDG outcome variables. At pre-Fontan catheterization, group 1 had higher mean pulmonary artery pressure (13.3 versus 10.9 mm Hg, p = 0.01), arterial oxygen saturation (85.8 versus 80.9%, p = 0.0001), and fewer collateral vessels were coil embolized than in group 2 (0.9 versus 1.6, p = 0.02). Mean ventricular end-diastolic pressure was similar between groups. The Nakata index in group 1 remained stable from pre-BDG to pre-Fontan (348 versus 391, p = 0.24), but it decreased in group 2 (375 versus 227, p = 0.046). CONCLUSIONS Patients with anterograde pulmonary blood flow after BDG had a modest increase in pulmonary artery growth and arterial oxygen saturations, and decreased collateral vessel formation. This did not, however, confer additional benefit on outcome after BDG or on eventual Fontan completion.
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Affiliation(s)
- Robert G Gray
- Columbia University College of Physicians and Surgeons, New York, New York, USA
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30
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Abstract
Cardiac retransplantation is often the only therapy to treat GV or other causes of allograft failure. Previous reports of retransplantation have conflicting results. In this series of 18 re-transplants in 16 patients from 1984-2005, indications for retransplantation were: GV (67%); GV with cellular rejection (28%); acute graft failure (2.5%); and chronic graft failure (2.5%). Mean age at retransplantation was 12.3 (range: 0.7-22) years with a mean primary graft survival of 5.3 years (range: 8 days-10.5 years). There was no short-term mortality with only three deaths at 4, 10, and 16 years post-retransplantation. Fourteen of 18 patients had risk factors for adverse outcomes following retransplantation: ECMO support in one patient prior to retransplantation; impaired renal function in three patients; elevated panel reactive antibody screen in seven patients; a history of PTLD in five patients; and a recent episode of rejection (13-36 days) in four patients. One-, five- and ten-year survival after retransplantation was 100%, 83% and 66%, respectively, comparable to survival after primary transplantation. Freedom from rejection was not significantly different between primary and retransplantations. All patients who underwent treatment for PTLD had excellent results after retransplantation with one recurrence 16 months after retransplant. Overall, patients had excellent survival after retransplantation even in those with risk factors for poor outcome.
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Affiliation(s)
- Marc E Richmond
- Division of Pediatric Cardiology, Morgan Stanley Children's Hospital of New York Presbyterian, College of Physicians and Surgeons, Columbia University, New York, New York 10032, USA
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31
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Selamet Tierney ES, Glickstein JS, Altmann K, Solowiejczyk DE, Mosca RS, Quaegebeur JM, Kleinman CS, Printz BF. Bidirectional cavopulmonary anastomosis: impact on diastolic ventricular function indices. Pediatr Cardiol 2007; 28:372-8. [PMID: 17687592 DOI: 10.1007/s00246-006-0122-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2006] [Accepted: 04/18/2007] [Indexed: 11/26/2022]
Abstract
Systolic ventricular function has been demonstrated to remain unchanged following bidirectional cavopulmonary anastomosis (BCPA). The effects of BCPA on diastolic ventricular performance have not been critically assessed. The objective of this study was to evaluate the changes in diastolic ventricular function indices early after BCPA. Nineteen patients were enrolled prospectively. Transthoracic echocardiograms were performed at a median of 4 days prior to and 5 days subsequent to BCPA. Diastolic and systolic echocardiographic indices of ventricular performance were measured for the dominant ventricle. End diastolic volume decreased postoperatively (71.1 +/- 21.1 vs 68.08 +/- 17.9 ml/m2, p = 0.05). Tei index increased postoperatively (0.51 +/- 0.2 vs 0.62 +/- 0.1, p = 0.002), whereas inflow Doppler E velocity (70.3 +/- 13 vs 56.3 +/- 24.7 cm/sec, p = 0.04), E/A ratio (1.18 +/- 0.52 vs 0.84 +/- 0.2, p = 0.02), tissue Doppler E' velocity (9.5 +/- 2.5 vs 6.4 +/- 3.2 cm/sec, p = 0.03) and diastolic flow propagation velocity (56.5 +/- 12 vs 52.8 +/- 11 cm/sec, p = 0.04) all decreased. There was no change in ventricular mass, area change fraction, heart rate, or inflow Doppler A or tissue Doppler A' and S' velocities. This study demonstrated that diastolic indices of ventricular performance are altered indicating decreased diastolic function early following BCPA. Whether this observation is a result of a change in ventricular mass:volume ratio, loading conditions of the ventricle, ventricular geometry, or the effects of cardiopulmonary bypass remains to be determined.
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Affiliation(s)
- E S Selamet Tierney
- Division of Pediatric Cardiology, Morgan Stanley Children's Hospital of New York Presbyterian, Columbia University, College of Physicians & Surgeons, New York, NY, USA.
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Hirata Y, Chen JM, Quaegebeur JM, Hellenbrand WE, Mosca RS. Pulmonary Atresia With Intact Ventricular Septum: Limitations of Catheter-Based Intervention. Ann Thorac Surg 2007; 84:574-9; discussion 579-80. [PMID: 17643638 DOI: 10.1016/j.athoracsur.2007.04.003] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2007] [Revised: 03/30/2007] [Accepted: 04/02/2007] [Indexed: 11/29/2022]
Abstract
BACKGROUND Pulmonary atresia with intact ventricular septum (PAIVS) has a wide spectrum of anatomic heterogeneity and invokes a wide variety of treatment strategies. We reviewed the outcome of our patients with PAIVS in order to delineate strategies for the optimal management of PAIVS. In particular, the possibility of avoiding neonatal surgical intervention with catheter-based technology was assessed. METHODS The study cohort was composed of all patients presented with PAIVS from January 1999 through December 2005. Demographic and anatomic variables were analyzed to determine association with in-hospital mortality. RESULTS Forty-four infants with PAIVS underwent catheter valvuloplasty (n = 17) and (or) surgical intervention (n = 42). The mean age and weight of the infants was six days and 3.1 kg, and the average follow-up was 40 +/- 29.5 months. Five (11%) had right ventricle dependent coronary circulation (RVDCC) and six (14%) had Ebstein's anomaly. Five (11%) patients died. Of those who underwent catheter valvotomy, three (18%) underwent shunt placement, 12 (71%) underwent right ventricular outflow tract reconstruction with shunt placement, and only two (12%) did not require a further surgical intervention in the newborn period. Multivariable analyses demonstrated RVDCC (odds ratio 21.3, p = 0.025) and Ebstein's anomaly (odds ratio 16.0, p = 0.038) to be risk factors for in-hospital mortality. Of those patients with Ebstein's anomaly, a single ventricle approach had a better outcome. CONCLUSIONS We demonstrated excellent recent outcomes for patients with PAIVS. Catheter-based interventions rarely avoid surgical repair. The RVDCC and Ebstein's anomaly were associated with high mortality. In patients with Ebstein's anomaly, single ventricular pathway may be the better strategy for this specific patient population.
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Affiliation(s)
- Yasutaka Hirata
- The Division of Pediatric Cardiac Surgery, Columbia University College of Physicians and Surgeons, New York, New York 10032, USA.
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Chen JM, Glickstein JS, Margossian R, Mercando ML, Hellenbrand WE, Mosca RS, Quaegebeur JM. Superior outcomes for repair in infants and neonates with tetralogy of Fallot with absent pulmonary valve syndrome. J Thorac Cardiovasc Surg 2006; 132:1099-104. [PMID: 17059929 DOI: 10.1016/j.jtcvs.2006.05.049] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2006] [Revised: 05/12/2006] [Accepted: 05/22/2006] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Primary repair of tetralogy of Fallot with absent pulmonary valve syndrome has been associated with significant mortality, particularly for neonates in respiratory distress. Controversy persists regarding the method of establishing right ventricle-pulmonary artery continuity. METHODS Anatomic and demographic parameters were evaluated for patients undergoing repair of tetralogy of Fallot with absent pulmonary valve syndrome from 1990 to 2005, as were perioperative and late postoperative parameters (airway complications, reoperation or catheter-based intervention, and mortality). RESULTS Twenty-three patients underwent repair. Median age was 15 days (range 2-1154 days). Patients were followed up for 5.3 +/- 3.9 years. Seventeen (85%) required preoperative ventilatory assistance. One patient died within 24 hours; 1 patient died 8 months postoperatively. Four patients received valved homografts, and the remainder had valveless connections. All patients underwent reduction pulmonary arterioplasty and mobilization, unifocalization (in 3), and ventricular septal defect closure. Valveless connection recipients had a transannular hood. No patient underwent a Lecompte maneuver. Four patients underwent reoperation for conversion to valveless connection (n = 1), reduction arterioplasty (n = 1), and repair of pulmonary stenosis (n = 2). Three patients required catheter-based intervention, with balloon angioplasty (n = 3) and stent placement (n = 1); 2 now demonstrate equal quantitative lung perfusion. No patient has had significant debility from airway compromise. All patients demonstrate free pulmonary insufficiency and good biventricular function. CONCLUSIONS We report excellent overall survival (89%) and low postoperative morbidity for neonates and infants undergoing primary repair of tetralogy of Fallot with absent pulmonary valve syndrome. Our recent experience supports the use of a valveless right ventricle-pulmonary artery connection, which, combined with catheter-based intervention, reduces the likelihood of reoperation necessitated by homograft placement.
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Affiliation(s)
- Jonathan M Chen
- Department of Cardiothoracic Surgery, Weill Medical School at Cornell University, New York, NY 10021, USA.
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Garofalo CA, Cabreriza SE, Quinn TA, Weinberg AD, Printz BF, Hsu DT, Quaegebeur JM, Mosca RS, Spotnitz HM. Ventricular Diastolic Stiffness Predicts Perioperative Morbidity and Duration of Pleural Effusions After the Fontan Operation. Circulation 2006; 114:I56-61. [PMID: 16820638 DOI: 10.1161/circulationaha.105.001396] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background—
We validated the clinical relevance of ventricular stiffness by examining surgical morbidity in children with univentricular hearts undergoing Fontan operation. We hypothesized that ventricular stiffness affects Fontan morbidity, particularly duration of pleural effusions.
Methods and Results—
Sixteen children with right ventricular (RV) (n =11) or left ventricular (LV) (n =5) dominance were studied intraoperatively at a median age of 3.3 years (1.8 to 5.1). Transesophageal long-axis echocardiograms and ventricular pressure by micromanometer provided end-diastolic pressure (P) area (A) relations during initiation and conclusion of cardiopulmonary bypass. Curve fitting to the equation P=αe
βA
defined the ventricular stiffness constant, β. Changes in β and clinical correlations were examined. Ventricular stiffness increased after bypass in patients with complete pre-bypass and post-bypass data (n =11,
P
=0.023, mixed models methodology). Pre-bypass β correlated well with duration of chest tube (CT) drainage (
r
=0.90, n =16), net perioperative fluid balance (
r
=0.71, n=14), and length of stay (LOS) (
r
=0.81, n =16). CT duration and LOS also correlated significantly with post-bypass β (
r
=0.77 for both, n=11), but insignificantly with preoperative catheterization pressures.
Conclusions—
Intraoperative β predicts duration of CT drainage, net perioperative fluid balance, and LOS after the Fontan operation. These observations could improve risk stratification and clinical management of children at high-risk undergoing the Fontan operation.
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Affiliation(s)
- Cara A Garofalo
- Department of Pediatrics, Columbia College of Physicians & Surgeons, Columbia University, New York, NY 10032, USA
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Konstantinov IE, Karamlou T, Williams WG, Quaegebeur JM, del Nido PJ, Spray TL, Caldarone CA, Blackstone EH, McCrindle BW. Surgical management of aortopulmonary window associated with interrupted aortic arch: a Congenital Heart Surgeons Society study. J Thorac Cardiovasc Surg 2006; 131:1136-1141.e2. [PMID: 16678601 DOI: 10.1016/j.jtcvs.2005.03.051] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2005] [Revised: 02/28/2005] [Accepted: 03/23/2005] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The objective was to determine outcomes and risk factors of surgical management of patients with aortopulmonary window associated with interrupted aortic arch. METHODS From 1987 to 1997, 472 neonates with interrupted aortic arch were enrolled prospectively from 33 institutions. Associated aortopulmonary window was present in 20 patients. Competing risk methodology determined the prevalence of reintervention for postrepair pulmonary artery and aortic arch obstruction. RESULTS Interrupted aortic arch was type A in 17 patients and type B in 3 patients. Aortopulmonary window morphology was type I (n = 10), type II (n = 5), and type III (n = 5). Associated cardiovascular anomalies were common, including atrial septal defect (n = 13) and systemic venous anomalies (n = 3). Overall survival after initial admission was 91%, 86%, and 84% at 1, 5, and 10 years, respectively. Fifteen patients underwent single-stage repair, and 4 patients underwent staged repair. There was an increased prevalence of patch augmentation of the interrupted aortic arch anastomosis in lower-weight infants (2.3 kg vs 3.1 kg, P = .07). Competing risk analysis estimated that 5 years after repair, 51% had initial arch reintervention, 6% had initial pulmonary artery reintervention, and 43% were alive without reintervention. Reintervention for arch obstruction was more likely for those with interrupted aortic arch type B (P = .08) and for those with higher weight at initial repair (P = .003). CONCLUSIONS Complete correction of aortopulmonary window in the setting of interrupted aortic arch can be performed with low mortality in the neonatal period. Reinterventions for aortic arch obstruction are the most frequent complication after repair, but pulmonary artery stenosis also occurs. Use of patch augmentation may reduce the need for subsequent arch reintervention.
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Abstract
BACKGROUND The Ross procedure is commonly used to treat aortic valve disease in pediatric and adult patients. For infants, data are limited regarding survival, reintervention, autograft growth, and function. METHODS AND RESULTS The Ross procedure was performed in 27 infants <18 months of age (median age 5.7 months). All patients had congenital aortic stenosis (AS); associated lesions included subAS (n=9), supravalvular AS (n=2), coarctation (n=5), and interrupted aortic arch (n=2). Median follow-up was 6.1 years (range 0.2 to 12.9). There were 3 early deaths and no late deaths. Freedom from reintervention for homograft dysfunction was 87% at 8 years; freedom from autograft reintervention was 100%. Follow-up echocardiograms were available in 17 patients. Estimated peak autograft gradient was 55 mm Hg in one patient and <10 mm Hg in 16. Mild autograft insufficiency was seen in 4 patients; 13 had none. Autograft diameter was measured early postoperatively and at latest follow-up. The mean z score increased from 0.63 to 3.2 (P<0.01) at the annulus and from 0.26 to 2.2 (P<0.01) at the sinus. In a subgroup, the mean autograft z score increased significantly from the postoperative period to 1 year for both the annulus (0.72 to 3.2, P<0.01) and the sinus (0.26 to 2.2, P<0.01), but remained unchanged thereafter. CONCLUSIONS The Ross procedure effectively relieves AS in infants. Homograft reintervention occurred in 13% within 8 years. No patient developed significant autograft insufficiency or required autograft reintervention during the follow-up period. Dilatation of the autograft occurred during the first year after surgery and stabilized thereafter.
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Affiliation(s)
- Ismee A Williams
- Division of Pediatric Cardiology, Morgan Stanley Children's Hospital of New York, New York, NY 10032, USA.
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Selamet Tierney ES, Gersony WM, Altmann K, Solowiejczyk DE, Bevilacqua LM, Khan C, Krongrad E, Mosca RS, Quaegebeur JM, Apfel HD. Pulmonary position cryopreserved homografts: Durability in pediatric Ross and non-Ross patients. J Thorac Cardiovasc Surg 2005; 130:282-6. [PMID: 16077388 DOI: 10.1016/j.jtcvs.2005.04.003] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate the outcome and risk factors for implant failure in pediatric patients who underwent pulmonary position homograft placement for right ventricular outflow tract obstruction compared with conduit placement as a component of the Ross operation. Actuarial 5-year survivals for cryopreserved right ventricle-to-pulmonary artery homografts range from 55% to 94% at all ages. It is not known whether there is a difference in homograft durability when utilized for right ventricular outflow tract obstruction or as part of the Ross operation. METHODS The records of all pediatric patients receiving a right ventricle-to-pulmonary artery homograft from July 1989 through October 2003 were reviewed. Ninety-eight consecutive patients were studied (26 Ross, 72 non-Ross). In addition to Ross versus non-Ross comparisons, other potential risk factors for homograft failure analyzed included age at operation, follow-up time, type of surgery, and homograft type and size. RESULTS Ross and non-Ross patients were comparable in age at the time of the operation and follow-up time. Homograft failure rates were 12% and 51% for Ross and non-Ross patients, respectively. Freedom from reintervention was 93% in the Ross and 66% in the non-Ross group at 5 years (P = .019). On multivariate analysis, non-Ross operation and age less than 2 years were significant predictors of homograft failure. CONCLUSIONS 1. Pediatric patients undergoing the Ross operation have longer homograft survival than pediatric patients treated for right ventricular outflow tract obstruction, independent of age. 2. Homografts placed in patients less than 2 years of age have shorter homograft survival.
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Affiliation(s)
- Elif Seda Selamet Tierney
- Division of Pediatric Cardiology, Children's Hospital of New York, Columbia University, New York, NY, USA.
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Abstract
OBJECTIVE To examine whether children with univentricular defects have intrinsic dysfunction in the natriuretic peptide system. METHODS We compared plasma levels of the fluid-regulating hormone vasopressin (antidiuretic hormone), aldosterone, atrial natriuretic peptide, and brain natriuretic peptide in children with congenital univentricular and biventricular defects. We enrolled 27 patients with univentricular defects and 27 patients with biventricular cardiac defects. Children who underwent Fontan and Glenn procedures were considered as patients with univentricular cardiac defects; children who underwent repair of tetralogy of Fallot or subaortic stenosis were considered as controls with biventricular defects. RESULTS Preoperative plasma atrial natriuretic peptide, brain natriuretic peptide, antidiuretic hormone, and aldosterone were comparable in both groups. Although plasma cyclic guanosine monophosphate levels were comparable between groups, there was a significant correlation between molar concentrations of plasma cyclic guanosine monophosphate and plasma atrial natriuretic peptide ( r = 0.42) and brain natriuretic peptide ( r = 0.44) in the biventricular group, but not in the univentricular group ( r = 0.19 for atrial natriuretic peptide; r = 0.13 for brain natriuretic peptide). All patients had a significant postoperative increase in plasma antidiuretic hormone. A significant postoperative increase in plasma brain natriuretic peptide was found in the patients with biventricular, but not univentricular, defects. In contrast, a significant increase in plasma aldosterone was observed only in the patients with univentricular defects. CONCLUSIONS There were distinct differences between univentricular and biventricular groups in their perioperative plasma fluid-regulating hormone responses. Specifically, patients with univentricular defects may have abnormal natriuretic peptide secretion and function. The natriuretic dysfunction may be on the basis of hypoplastic ventricular development.
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Affiliation(s)
- Lena S Sun
- Department of Anesthesiology, College of Physicians and Surgeons, Columbia University, 630 West 168th Street, New York, NY 10032, USA.
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Chen JM, Glickstein JS, Davies RR, Mercando ML, Hellenbrand WE, Mosca RS, Quaegebeur JM. The effect of repair technique on postoperative right-sided obstruction in patients with truncus arteriosus. J Thorac Cardiovasc Surg 2005; 129:559-68. [PMID: 15746739 DOI: 10.1016/j.jtcvs.2004.10.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES We reviewed our experience with repair of truncus arteriosus to assess the effect of type of right ventricular outflow tract reconstruction on perioperative morbidity, survival, and freedom from catheter-based interventions and reoperation. METHODS Patients undergoing repair of truncus arteriosus from June 1990 through February 2004 were evaluated on the basis of operative procedure regarding preoperative and postoperative variables, the need for postoperative catheter-based intervention or reoperation, and survival on the basis of univariate, multivariable, and actuarial analyses. RESULTS Of 54 study patients, 15 (28%) received a valved homograft, and 39 (72%) received a direct connection with a variety of hood materials. Five (9.1%) patients died. Valved homograft recipients were more likely to require reoperation than patients receiving direct connections (40% vs 15%, P = .046); however, valved homograft and direct connection recipients had a similar incidence of the combined end point of reoperation or catheter-based intervention (40.0% vs 37.5%, P = .865). Univariate and multivariable modeling demonstrated use of valved homografts or direct connections with an autologous pericardial hood to be predictive of the need for later catheter-based intervention or reoperation. Actuarial analysis demonstrated a trend toward improved outcomes in the direct connection group and within the direct connection cohort, a statistically significant difference on the basis of hood type. CONCLUSIONS Although the direct connection technique might not prevent later catheter-based intervention, it does reduce the need for reoperation. Outcomes among direct connection recipients were associated with hood type: polytetrafluoroethylene hoods (W. L. Gore & Associates, Inc, Tempe, Ariz) had the lowest rate of reintervention, and untreated autologous pericardial hoods had the highest rate of reintervention. We report excellent outcomes with primary repair of truncus arteriosus. Where anatomically appropriate, we advocate the direct connection technique.
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Affiliation(s)
- Jonathan M Chen
- Division of Cardiothoracic Surgery, Columbia University College of Physicians and Surgeons, New York, NY, USA.
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40
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Lamour JM, Hsu DT, Quaegebeur JM, Pinney SP, Mital SR, Mosca RS, Chen JM, Addonizio LJ. Heart transplantation to a physiologic single lung in patients with congenital heart disease. J Heart Lung Transplant 2005; 23:948-53. [PMID: 15312824 DOI: 10.1016/j.healun.2004.06.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2004] [Accepted: 06/07/2004] [Indexed: 10/26/2022] Open
Abstract
BACKGROUND Heart-lung transplantation has been recommended for patients with end-stage congenital heart disease (CHD) and single-lung physiology due to either discontinuous pulmonary arteries (PAs) and unilateral PA hypertension (HTN) or absence of 1 PA. METHODS Eleven patients with CHD and single-lung physiology underwent heart transplantation (HT). Diagnoses included: tetralogy of Fallot, absent left PA (n = 4); single-ventricle s/p classic Glenn (n = 7), with absent left PA (n = 1); and severe left PA HTN (n = 6). RESULTS Mean time from last surgery was 13 +/- 8 years; mean number of operations (op) was 3.2 +/- 1.7. Mean age was 21 +/- 11 years (range 9.5 to 43). Complications and procedures before HT included hemoptysis (n = 2), plastic bronchitis (n = 1) and interventional catheterization (n = 6). Mean cardiopulmonary bypass and ischemic time was 275 +/- 72 and 268 +/- 75 minutes, respectively. Mean time to extubation was 4.6 +/- 3.2 days, and mean length of stay was 19 +/- 7 days. Post-operative morbidity included bleeding (n = 4), vocal cord paralysis (n = 1) and coil embolization of aortopulmonary collaterals (n = 3). Early post-operative survival was 82%. Cause of death was aortic rupture (n = 1) and bleeding (n = 1). Eight patients are alive 4 years (range 0.9 to 7.6) after HT. PA continuity was established in 6 patients; post-HT lung perfusion scan showed no increase in perfusion to the left PA. One patient died from rejection 3 years post-HT. CONCLUSIONS HT can be performed successfully in patients with single-lung physiology. HT is the procedure of choice in patients with end-stage CHD and a physiologic single lung.
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Affiliation(s)
- Jacqueline M Lamour
- Division of Pediatric Cardiology, Columbia University College of Physicians and Surgeons, New York, NY, USA.
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41
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Morgan JA, John R, Park Y, Addonizio LJ, Oz MC, Edwards NM, Quaegebeur JM, Mosca RS. Successful outcome with extended allograft ischemic time in pediatric heart transplantation. J Heart Lung Transplant 2005; 24:58-62. [PMID: 15653380 DOI: 10.1016/j.healun.2003.10.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2003] [Revised: 09/15/2003] [Accepted: 10/22/2003] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Many cardiac transplant programs have liberalized donor eligibility criteria in an attempt to maximize donor supply and to accommodate increasing demand. Although many studies have evaluated the potential adverse effects of prolonged donor ischemic time (DIT) in adults undergoing cardiac transplantation, relatively few have focused specifically on pediatric recipients that include a substantial number of patients and long-term follow-up. The focus of this study was to examine the effect of extended DIT on mortality after pediatric heart transplantation. METHODS We conducted a retrospective review of our pediatric cardiac transplant experience in the past 11 years, comparing patients who received allografts and had ischemic times >240 minutes with those who had ischemic times <240 minutes. RESULTS A total of 129 pediatric patients (<19 years) underwent orthotopic heart transplantation, of whom 78 (60.5%) had DIT <240 minutes and 51 (39.5%) had DIT >240 minutes. We found no statistically significant difference in age, sex, race, height, weight, or donor age between the groups (p = not significant). Post-transplant survival at 1, 5, and 10 years was similar for both groups: 91.2%, 88.0%, and 85.2%, respectively, for patients with DIT <240 minutes vs 89.6%, 87.2%, and 79.8%, respectively, for patients with DIT >240 minutes (p = 0.433). Additionally, using Cox proportional hazard models, extended DIT >240 minutes was not a statistically significant independent predictor of post-transplant mortality (odds ratio, 0.655; 95% confidence interval, 0.518-0.972; p = 0.684; standard error = 0.468). CONCLUSION Procurement of hearts from distant locations with associated extended DIT is justified in the setting of increased demand and a fixed donor population.
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Affiliation(s)
- Jeffrey A Morgan
- Department of Surgery, Division of Cardiothoracic Surgery, College of Physicians and Surgeons, Columbia University, 177 Fort Washington Avenue, New York, NY 10032, USA.
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Jayakumar KA, Addonizio LJ, Kichuk-Chrisant MR, Galantowicz ME, Lamour JM, Quaegebeur JM, Hsu DT. Cardiac transplantation after the Fontan or Glenn procedure. J Am Coll Cardiol 2004; 44:2065-72. [PMID: 15542293 DOI: 10.1016/j.jacc.2004.08.031] [Citation(s) in RCA: 187] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2003] [Revised: 07/21/2004] [Accepted: 08/09/2004] [Indexed: 11/17/2022]
Abstract
OBJECTIVES The purpose of this study was to review the clinical course and outcome of cardiac transplantation after a failed Glenn or Fontan procedure. BACKGROUND Late complications of the Glenn or Fontan procedure, including ventricular failure, cyanosis, protein-losing enteropathy, thromboembolism, and dysrhythmias often lead to significant morbidity and mortality. If other therapies are ineffective, cardiac transplantation is the only therapeutic recourse. Transplantation in this unique population presents significant challenges in the operative and perioperative periods. METHODS The anatomic diagnoses, previous operations, clinical status, and indications for transplantation were characterized in patients transplanted after a Glenn or Fontan procedure. Outcomes after transplantation, including postoperative complications and mortality, were reviewed. Comparisons were made between survivors and nonsurvivors. RESULTS Primary orthotopic cardiac transplantation was performed in 35 patients (mean age 15.7 +/- 8.5 years) with a mean follow-up of 54 +/- 46 months. A total of 11 patients had undergone a Glenn shunt and 24 patients a Fontan procedure. Indications for transplantation were a combination of causes including ventricular dysfunction, failed Fontan physiology, and/or cyanosis. Ten patients died <or=2 months after transplantation; nine of the deaths occurred in the Fontan patients. Overall, one-year survival was 71.5%, and five-year survival was 67.5%. Survival was not significantly different between patients transplanted after a Glenn or Fontan procedure and patients transplanted for other etiologies. CONCLUSIONS Cardiac transplantation can be performed successfully in patients with end-stage congenital heart disease after a Glenn or Fontan procedure, with outcomes similar to transplantation for end-stage heart failure secondary to other etiologies.
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Affiliation(s)
- K Anitha Jayakumar
- Department of Pediatrics, College of Physicians & Surgeons, Columbia University, New York, New York, USA
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43
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Chen JM, Davies RR, Mital SR, Mercando ML, Addonizio LJ, Pinney SP, Hsu DT, Lamour JM, Quaegebeur JM, Mosca RS. Trends and Outcomes in Transplantation for Complex Congenital Heart Disease: 1984 to 2004. Ann Thorac Surg 2004; 78:1352-61; discussion 1352-61. [PMID: 15464499 DOI: 10.1016/j.athoracsur.2004.04.012] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/01/2004] [Indexed: 11/24/2022]
Abstract
BACKGROUND Cardiac transplantation for patients with complex congenital heart disease poses several anatomic and physiologic challenges for the transplant surgeon. We undertook the current single center study to evaluate surgical outcomes and lessons learned through a nearly twenty year experience with cardiac transplantation for complex congenital heart disease. METHODS A retrospective review was performed to evaluate all patients undergoing cardiac transplantation from January 1, 1984 through January 1, 2004. Donor and recipient demographic and intraoperative and postoperative variables were acquired and correlated with perioperative (30-day) and late mortality in both univariate and multivariate analyses, and with Kaplan-Meier survival estimates. RESULTS One hundred and six patients underwent transplantation for complex congenital heart disease and were followed for a median of 56 months. Thirty-seven (34.9%) patients died. Male gender and later year of transplantation were protective, and neonatal age and pulmonary artery reconstruction detrimental in multivariable modeling of overall mortality. Transplantation to a physiologic or anatomic single lung did not impact on survival. Patients in the study cohort had comparable survival estimates when compared with all those in the entire cohort without complex congenital heart disease. When comparing patients by era of transplantation, both cohorts demonstrated improved survival with later transplantation. CONCLUSIONS Outcomes with transplantation for complex congenital heart disease have improved annually over the past twenty years. Transplantation to an anatomic or physiologic single lung did not impair overall survival. Pulmonary artery reconstruction imparted an increase in mortality both short and long term, a finding which merits further investigation.
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Affiliation(s)
- Jonathan M Chen
- Division of Pediatric Cardiac Surgery, Columbia University College of Physicians and Surgeons, New York, New York, USA.
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Quinn TA, Cabreriza SE, Blumenthal BF, Printz BF, Altmann K, Glickstein JS, Snyder MS, Mosca RS, Quaegebeur JM, Holmes JW, Spotnitz HM. Regional functional depression immediately after ventricular septal defect closure. J Am Soc Echocardiogr 2004; 17:1066-72. [PMID: 15452473 DOI: 10.1016/j.echo.2004.06.021] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Left ventricular ejection is depressed immediately after repair of ventricular septal defect (VSD). Postrepair functional depression seen after VSD closure could result from a reduction in preload. However, other mechanisms could be at work. Functional depression could also be caused by closure of a low-impedance path for left ventricular ejection, the introduction of a stiff akinetic patch, or the operation itself. We reasoned that functional depression mediated by changes in preload or afterload should symmetrically affect end-diastole and end-systole, whereas depression resulting from changes in septal mechanics should be localized. We, therefore, performed segmental wall-motion analysis on intraoperative echocardiograms from patients undergoing VSD and atrial septal defect repair. After VSD closure, there was an asymmetric change in left ventricular end-systolic segment length and a decrease in fractional segment shortening localized to the septal and lateral walls, whereas patients with atrial septal defect had a symmetric increase in fractional shortening. These results suggest that acute functional depression after VSD repair is a result of localized impairment of septal function.
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Affiliation(s)
- T Alexander Quinn
- Department of Biomedical Engineering, Columbia University, New York, New York, USA
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Quaegebeur JM, Cooper RS. Surgery for atrioventricular septal defects. Adv Cardiol 2004; 41:127-32. [PMID: 15285226 DOI: 10.1159/000079792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Affiliation(s)
- Jan M Quaegebeur
- Department of Cardiovascular Surgery, College of Physicians and Surgeons of Columbia University, New York, NY 10021, USA.
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Mital S, Loke KE, Chen JM, Mosca RS, Quaegebeur JM, Addonizio LJ, Hintze TH. Mitochondrial respiratory abnormalities in patients with end-stage congenital heart disease. J Heart Lung Transplant 2004; 23:72-9. [PMID: 14734130 DOI: 10.1016/s1053-2498(03)00095-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
BACKGROUND Nitric oxide (NO) binds to mitochondrial cytochrome oxidase to decrease myocardial oxygen consumption (MVO(2)). This regulation is disrupted in heart failure (HF) due to reduced NO. The present objective was to evaluate NO-mediated regulation of mitochondrial respiration in the myocardium of patients with congenital heart disease (CHD) and cardiomyopathy (CMP). METHODS MVO(2) was measured in vitro in explanted human myocardium obtained at transplantation. Seven patients had CHD (5 cyanotic, 2 acyanotic), and 11 had non-ischemic CMP. The effects of the following on MVO(2) were measured: kinin-dependent endothelial NO synthase (eNOS) agonists, bradykinin, ramiprilat and amlodipine; NO donors, nitroglycerin and S-nitroso-N-acetylpenicillamine (SNAP) (10(-7) to 10(-4) mol/liter); and NOS inhibitor, N(omega)-nitro-L-arginine methylester (L-NAME). RESULTS eNOS agonists caused a smaller decrease in MVO(2) in CHD compared with CMP patients. Changes in MVO(2) at the highest dose in CHD vs CMP were, respectively: bradykinin, -22 +/- 7% vs: -30 +/- 5% (p < 0.05); ramiprilat, -17 +/- 8% vs -26 +/- 2%, (p < 0.001); and amlodipine, -5 +/- 7% vs -29 +/- 6% (p < 0.001). L-NAME attenuated the effect of bradykinin, ramiprilat and amlodipine in both groups, confirming that the drug effect was secondary to eNOS activation. Nitroglycerin and SNAP also caused smaller decreases in MVO(2) in CHD vs CMP (NTG -16 +/- 6% vs -37 +/- 4%, SNAP -37 +/- 4% vs -49 +/- 3%, [p < 0.01]), suggesting altered mitochondrial function in CHD. CONCLUSIONS Abnormal regulation of MVO(2) in end-stage CMP may be secondary to reduced endogenous NO availability and can be reversed by the use of NO agonists. In end-stage CHD, this abnormality may be related in part to abnormal mitochondrial function.
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Affiliation(s)
- Seema Mital
- Department of Pediatrics, Columbia University College of Physicians and Surgeons, New York, New York, USA.
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Chen JM, Mosca RS, Altmann K, Printz BF, Targoff K, Mazzeo PA, Quaegebeur JM. Early and medium-term results for repair of ebstein anomaly. J Thorac Cardiovasc Surg 2004; 127:990-8; discussion 998-9. [PMID: 15052195 DOI: 10.1016/j.jtcvs.2003.11.037] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVES We evaluated the early and medium-term single-center results for primary repair of Ebstein anomaly in both adults and children. METHODS The records were reviewed of patients undergoing repair of Ebstein anomaly at the Children's Hospital of New York from September 1990 to September 2002. Functional, demographic, and echocardiographic parameters were studied both preoperatively and postoperatively, along with functional status and adverse events. The repair technique involved vertical plication of the atrialized ventricle and valve leaflet reimplantation after clockwise rotation. RESULTS A total of 25 patients (19 children and 6 adults) underwent repair. The average age was 14.2 +/- 15.9 years, and the average follow-up was 4.1 +/- 3.4 years. Three patients required reoperation for right ventricular overload (1 child) and progressive, severe tricuspid regurgitation (2 adults); both adults received tricuspid valve replacements, one at 4 years and the other at 8 years post-repair. Three patients had radiofrequency ablation procedures performed intraoperatively. Ten patients (40%) had moderate-to-severe tricuspid regurgitation perioperatively. However, 18 children (95%) and 5 adults (83%) demonstrated significant improvement in exercise capacity late postoperatively. Two children died suddenly 11 months and 4 years after repair. DISCUSSION Ebstein repair has good functional outcomes in children despite residual tricuspid regurgitation, likely because of reduction in right ventricular volume loading and relative annular and ventricular plasticity. Adult patients did not demonstrate the same durability of valve repair and frequently required tricuspid valve replacement. Intraoperative radiofrequency ablation represents an important adjunctive treatment for intractable arrhythmias, which may now represent relative indications for operative intervention.
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Affiliation(s)
- Jonathan M Chen
- Division of Pediatric Cardiac Surgery, Children's Hospital of New York, Columbia University College of Physicians and Surgeons, NY 10032, USA.
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Kaufman BD, Gersony WM, Hellenbrand WE, Quaegebeur JM, Starc TJ. 886-1 Interatrial obstruction syndrome in the postoperative fontan patient. J Am Coll Cardiol 2004. [DOI: 10.1016/s0735-1097(04)91679-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Tabibian M, Quaegebeur JM, Mosca RS, Lamour JM, Printz BF. 1039-200 Outcome of patients with D-transposition of the great arteries with abnormal pulmonary valve or left ventricular outflow tract obstruction following arterial switch operation. J Am Coll Cardiol 2004. [DOI: 10.1016/s0735-1097(04)91595-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Kaufman BD, Osorio JC, Desai M, Chen J, Mosca RS, Quaegebeur JM, Ferrante AW, Mital S. 1114-198 Genomic profiles of left ventricular and right ventricular hypertrophy in congenital heart disease. J Am Coll Cardiol 2004. [DOI: 10.1016/s0735-1097(04)91631-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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