Research Topics
| Michiaki ImamuraSummaryAffiliation: University of Arkansas for Medical Sciences Country: USA Publications
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Detail Information
Publications
Hypoplastic left heart syndrome, interrupted inferior vena cava, biliary atresiaMichiaki Imamura
Division of Pediatric Cardiothoracic Surgery, University of Arkansas for Medical Sciences, Arkansas Children s Hospital, Little Rock, Arkansas 72202, USA
Ann Thorac Surg 84:1746-8. 2007..This case report illustrates that even in the presence of major multiple congenital anomalies, staged reconstruction for hypoplastic left heart syndrome can be successfully performed...
Prophylactic amiodarone reduces junctional ectopic tachycardia after tetralogy of Fallot repairMichiaki Imamura
University of Arkansas for Medical Sciences, Arkansas Children s Hospital, Department of Surgery, Little Rock, Ark 72202, USA
J Thorac Cardiovasc Surg 143:152-6. 2012..We introduced prophylactic amiodarone for tetralogy repair. This study was conducted to evaluate the effectiveness of the prophylactic amiodarone...
Reoperation and mechanical circulatory support after repair of anomalous origin of the left coronary artery from the pulmonary artery: a twenty-year experienceMichiaki Imamura
Division of Pediatric Cardiothoracic Surgery, Arkansas Children s Hospital, Little Rock, Arkansas 72202, USA
Ann Thorac Surg 92:167-72; discussion 172-3. 2011..This study was undertaken to determine whether long-term outcomes for children supported with extracorporeal membrane oxygenation (ECMO) after ALCAPA repair differ from those in children who did not require ECMO...
Bridge to cardiac transplant in children: Berlin Heart versus extracorporeal membrane oxygenationMichiaki Imamura
Pediatric Cardiothoracic Surgery, University of Arkansas for Medical Sciences, Arkansas Children s Hospital, Little Rock, Arkansas 72202, USA
Ann Thorac Surg 87:1894-901; discussion 1901. 2009..We reviewed our recent experience with these two technologies with particular focus on early outcomes...
Reoperation after supravalvular aortic stenosis repairMichiaki Imamura
Division of Pediatric Cardiothoracic Surgery, Arkansas Children s Hospital, Little Rock, Arkansas 72202, USA
Ann Thorac Surg 90:2016-22. 2010..Supravalvular aortic stenosis (SVAS) is the rarest type of left ventricular outflow tract obstruction. We reviewed our experience with this anomaly and analyzed risk factors for death or reoperation...
Extracorporeal membrane oxygenation support for intractable primary arrhythmias and complete congenital heart block in newborns and infants: short-term and medium-term outcomesUmesh Dyamenahalli
Department of Pediatrics, Section of Cardiology, Arkansas Children s Hospital, University of Arkansas for Medical Sciences, Little Rock, AR, USA
Pediatr Crit Care Med 13:47-52. 2012..To describe the experience with extracorporeal membrane oxygenation support for intractable primary arrhythmias in newborns and infants...
Management of a pediatric patient on the Berlin Heart Excor ventricular assist device with argatroban after heparin-induced thrombocytopeniaMichael L Schmitz
College of Medicine, The University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
ASAIO J 54:546-7. 2008..We report a 15-year-old male patient who developed type II heparin-induced thrombocytopenia (HIT) after 6 weeks of heparin administration and placement of a Berlin Heart Excor left ventricular assist device (LVAD)...
20-year experience of prolonged extracorporeal membrane oxygenation in critically ill children with cardiac or pulmonary failurePunkaj Gupta
Section of Pediatric Cardiology and Critical Care, Department of Pediatrics, University of Arkansas Medical Center, Little Rock, Arkansas 72202 3591, USA
Ann Thorac Surg 93:1584-90. 2012..This study aimed to study morbidity and mortality associated with prolonged ECMO therapy (≥28 days) in children with refractory cardiac or pulmonary failure...
Preliminary single center North American experience with the Berlin Heart pediatric EXCOR deviceStephanie R Rockett
Division of Pediatric Cardiothoracic Surgery, Arkansas Children s Hospital and University of Arkansas for Health Sciences, Little Rock, Arkansas, USA
ASAIO J 54:479-82. 2008..Five patients required re-operations for bleeding or evacuation of hematoma. Despite a disappointing rate of neurologic morbidity, our preliminary experience with the EXCOR has been very encouraging...
Impact of staged palliation on somatic growth in patients with hypoplastic left heart syndromeChandra Srinivasan
Division of Pediatric Cardiology, Arkansas Children s Hospital, University of Arkansas for Medical Sciences, Little Rock, Ark, USA
Congenit Heart Dis 5:546-51. 2010....
A single-center experience of extubation failure in infants undergoing the Norwood operationPunkaj Gupta
Division of Pediatric Cardiology, Department of Medical Education, College of Medicine, University of Arkansas Medical Center, Arkansas Children s Hospital, Little Rock, Arkansas 72202, USA
Ann Thorac Surg 94:1262-8. 2012....
Risk factors for prosthesis failure in pulmonary valve replacementRahel Zubairi
Division of Pediatric Cardiology, University of Arkansas for the Medical Sciences, Arkansas Children s Hospital, Little Rock, Arkansas 72202, USA
Ann Thorac Surg 91:561-5. 2011..Bioprosthetic valves fail (PVF) and require repeat replacement. Identification of risk factors for PVF would be useful for clinicians choosing among various options for the initial PVR...
Cardiopulmonary bypass flow rate: a risk factor for hyperlactatemia after surgical repair of secundum atrial septal defect in childrenBoban P Abraham
Department of Pediatrics, Section of Pediatric Cardiology, University of Arkansas for Medical Sciences, College of Medicine, Little Rock, AR, USA
J Thorac Cardiovasc Surg 139:170-3. 2010..The objective of the study was to investigate the intraoperative risk factors for hyperlactatemia in patients undergoing atrial septal defect repair...
Standardized management improves outcomes after the Norwood procedureChandra Srinivasan
Division of Pediatric Cardiology, Arkansas Children s Hospital, Little Rock, Arkansas 72202, USA
Congenit Heart Dis 4:329-37. 2009..We studied the impact of a standardized management protocol for neonates undergoing NP...
Ketamine as a neuroprotective and anti-inflammatory agent in children undergoing surgery on cardiopulmonary bypass: a pilot randomized, double-blind, placebo-controlled trialAdnan T Bhutta
Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA
Pediatr Crit Care Med 13:328-37. 2012..We hypothesized that ketamine, via N-methyl D-aspartate receptor blockade and anti-inflammatory effects, would reduce central nervous system injury during cardiopulmonary bypass...
Adrenal insufficiency in hemodynamically unstable neonates after open-heart surgeryXiomara Garcia
Pediatric Critical Care Medicine, College of Medicine, University of Arkansas Medical Sciences, Arkansas Children s Hospital, Little Rock, Ark 72202, USA
Congenit Heart Dis 5:422-9. 2010..To investigate if the low dose (1 µg) ACTH stimulation test appropriately assesses adrenal responsiveness in neonates undergoing open-heart surgery requiring cardio-pulmonary bypass...
Conal septal morphometrics can identify higher risk neonates with tetralogy of FallotSantosh C Uppu
Department of Pediatrics, Division of Cardiology, Arkansas Children s Hospital, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
J Am Soc Echocardiogr 26:200-7. 2013..The aim of this study was to test the hypothesis that infundibular morphology in neonates with TOF is associated with the occurrence of hypercyanotic spells and need for neonatal surgery...
Impact of 22q11.2 deletion on the postoperative course of children after cardiac surgeryRachel McDonald
Division of Pediatric Cardiology, University of Arkansas Medical Center, Little Rock, AR, USA
Pediatr Cardiol 34:341-7. 2013..However, short-term outcomes may differ in certain subgroups...
High-dose argatroban for heparin-induced thrombocytopenia in a child using a ventricular assist deviceSanjiv Pasala
Department of Pediatrics, Section of Pediatric Critical Care, University of Arkansas for Medical Sciences, Arkansas Children s Hospital, Little Rock, AR 72205, USA
Ann Thorac Surg 95:e57-8. 2013..This case also highlights bolus argatroban dosing for VAD change in the setting of persistent ventricular fibrillation...
Abdominal compartment syndrome in newborns and children supported on extracorporeal membrane oxygenationParthak Prodhan
Section of Pediatric Critical Care, Department of Pediatrics, Arkansas Children s Hospital, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, USA
ASAIO J 58:143-7. 2012..Timely placement of a PD catheter in patients who develop abdominal distension and ACS can substantially improve venous return and thus help maintain adequate tissue perfusion by improving ECMO flows...
Preemptive gastrostomy tube placement after Norwood operationXiomara Garcia
Department of Pediatrics, Division of Pediatric Cardiology, Arkansas Children s Hospital and University of Arkansas for Medical Sciences, Little Rock, AR, USA
J Pediatr 159:602-7.e1. 2011..Because infants undergoing a Norwood operation have poor interstage weight gain, we hypothesized that preemptive gastrostomy tube (GT) placement would result in earlier discharge, improved growth, and higher survival to stage 2...
Outcomes after extracorporeal cardiopulmonary resuscitation (ECPR) following refractory pediatric cardiac arrest in the intensive care unitParthak Prodhan
Pediatric Critical Care Medicine, College of Medicine, University of Arkansas Medical Sciences, Arkansas Children s Hospital, Little Rock, AR 72205, United States
Resuscitation 80:1124-9. 2009....
Hemolysis during cardiac extracorporeal membrane oxygenation: a case-control comparison of roller pumps and centrifugal pumps in a pediatric populationJonathan Byrnes
Department of Pediatrics Section of Critical Care, University of Arkansas Medical Sciences, Little Rock, Arkansas, USA
ASAIO J 57:456-61. 2011..Differences in circuit life did not reach statistical significance. This pilot study contrasts with past studies, which have demonstrated more hemolysis occurring with centrifugal pumps when compared with roller-head pumps...
Single-institution experience with interhospital extracorporeal membrane oxygenation transport: A descriptive studyKatherine C Clement
Department of Pediatrics, University of Arkansas for Medical Sciences College of Medicine, Little Rock, AR, USA
Pediatr Crit Care Med 11:509-13. 2010..We report our institution's nearly 20-yr experience with interhospital extracorporeal membrane oxygenation transport...
Orthotopic heart transplantation in a child with hereditary spherocytosisCharles E Johnson
Arkansas Children s Hospital, Little Rock, 72202 3500, USA
Artif Organs 34:1154-6. 2010..There are few reports of open heart surgery for patients with HS and none for orthotopic heart transplantation.We report a 6-year-old boy with HS who underwent orthotopic heart transplantation...
Intrahospital transport of children on extracorporeal membrane oxygenation: indications, process, interventions, and effectivenessParthak Prodhan
Arkansas Children s Hospital, Little Rock, AR, USA
Pediatr Crit Care Med 11:227-33. 2010..No studies to date have systematically evaluated intrahospital transport for patients on extracorporeal membrane oxygenation...
Vocal cord dysfunction and feeding difficulties after pediatric cardiovascular surgeryRitu Sachdeva
Department of Pediatrics, Division of Pediatric Cardiology, Arkansas Children s Hospital and University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
J Pediatr 151:312-5, 315.e1-2. 2007..To evaluate the impact of vocal cord dysfunction on feeding in children after cardiovascular surgery...
Single institution experience with a right-sided interrupted aortic archSantosh C Uppu
Department of Pediatrics, Section of Cardiology, Arkansas Children s Hospital, University of Arkansas for Medical Sciences, Little Rock, AR 72202, USA
Interact Cardiovasc Thorac Surg 15:802-4. 2012..We report our institutional experience with two such patients and review the recent literature...
Single institutional experience of interrupted aortic arch repair over 28 yearsTakeshi Shinkawa
Division of Pediatric and Congenital Cardiothoracic Surgery, Arkansas Children s Hospital, University of Arkansas for Medical Sciences, Little Rock, AR 72202, USA
Interact Cardiovasc Thorac Surg 14:551-5. 2012..2 vs. 90.0% at 10 years, P = 0.001). In conclusion, surgical outcomes for interrupted aortic arch have been significantly improved in the last decade and the staged repair remains an effective option in selected patients...
Cardiopulmonary bypass for adults with congenital heart disease: pitfalls for perfusionistsMichael L Schmitz
Division of Pediatric Cardiovascular Anesthesiology, University of Arkansas for Medical Sciences, Arkansas Children s Hospital, Little Rock 72202 3591, USA
Perfusion 21:45-53. 2006..The perfusionist needs to be aware of such conditions as much congenital aberrancy may present unexpectedly during cardiac surgery...
Repair of an anomalous left coronary artery from the pulmonary artery in a premature neonateRenee A Bornemeier
Department of Pediatrics, University of Arkansas for Medical Sciences, Division of Cardiology, Little Rock, Arkansas Children s Hospital, Little Rock, AR, USA
Congenit Heart Dis 3:435-9. 2008..We believe this to be the youngest and smallest patient reported with the diagnosis and successful surgical correction of an ALCAPA...
Accidental azygos vein extracorporeal membrane oxygenation cannulation in a neonate with premature closure of the ductus arteriosusJonathan Byrnes
Pediatric Cardiology, Arkansas Children s Hospital, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72202, USA
ASAIO J 57:344-5. 2011....
Recombinant human deoxyribonuclease improves atelectasis in mechanically ventilated children with cardiac diseaseParthak Prodhan
Pediatric Cardiology, University of Arkansas for Medical Sciences, Arkansas Children s Hospital, Little Rock, AR 72202, USA
Congenit Heart Dis 4:166-73. 2009..To investigate whether a mucolytic agent, recombinant human deoxyribonuclease (rhDNase), improves atelectasis in children with cardiac illness requiring mechanical ventilation...
The first successful DeBakey VAD child implantation as a bridge to transplantMichiaki Imamura
Department of Surgery, University of Arkansas for Medical Sciences, College of Medicine, Arkansas Children's Hospital, Little Rock, AR 72202, USA
ASAIO J 51:670-2. 2005..After 3 months, he had good cardiac function and no evidence of rejection. The DeBakey VAD Child device is a valuable option for cardiac support as a bridge to transplantation...
Echocardiographic evaluation of ventricular assist devices in pediatric patientsRitu Sachdeva
Department of Pediatrics, Division of Pediatric Cardiology, Arkansas Children s Hospital, Little Rock, Arkansas, USA
J Am Soc Echocardiogr 26:41-9. 2013..This report describes the role of echocardiography in the management of children supported by VADs...
Primary translocation of aberrant left subclavian artery for children with symptomatic vascular ringTakeshi Shinkawa
Department of Surgery, Division of Pediatric Cardiothoracic Surgery, Arkansas Children s Hospital, University of Arkansas for Medical Sciences, Little Rock, Arkansas 72202, USA
Ann Thorac Surg 93:1262-5. 2012..This study assessed the early outcomes of this approach...
Cardiac transplant outcomes in pediatric patients with pre-formed anti-human leukocyte antigen antibodies and/or positive retrospective crossmatchEric J Wright
Division of Pediatric Cardiothoracic Surgery, University of Arkansas for Medical Sciences and Arkansas Children s Hospital, Little Rock, Arkansas, USA
J Heart Lung Transplant 26:1163-9. 2007..We assessed outcomes of transplant recipients with either positive PRA before transplant or positive retrospective XM...
Extracorporeal membrane oxygenation in children with heart disease and genetic syndromesSantosh C Uppu
Divisions of Pediatric Cardiology, University of Arkansas Medical Center, Little Rock, Arkansas, USA
ASAIO J 59:52-6. 2013..However, only 10 patients are living to date in this cohort. ECMO can be used in children with heart disease and genetic syndromes with good results. The survival rate is high and the complication rate is low...
Successful intra-arterial thrombolytic therapy for a right middle cerebral artery stroke in a 2-year-old supported by a ventricular assist deviceJonathan W Byrnes
Department of Pediatrics, University of Arkansas Medical Sciences, Little Rock, AR 72202, USA
Transpl Int 25:e31-3. 2012..This is the first report which uses intra-arterial thrombolytics while on a ventricular assist device in a pediatric patient...
Pathologic aneurysmal dilation of the ascending aorta and dilation of the main pulmonary artery in patients with Kabuki syndrome: valve-sparing aortic root replacementUmesh Dyamenahalli
Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children s Hospital, Little Rock, Arkansas, USA
Congenit Heart Dis 2:424-8. 2007..This is the first recognition and report of these findings as part of the Kabuki syndrome...
Superior vena cava perforation in a child from a lawnmower projectileWesley A McKamie
Pediatric and Congenital Cardiothoracic Surgery, University of Arkansas for Medical Sciences, Arkansas, USA
Clin Pediatr (Phila) 46:847-9. 2007..The diagnostic work up and treatment of this deceptively life-threatening wound are discussed...
Single ventricle physiology: surgical options, indications and outcomesRobert D B Jaquiss
Arkansas Children s Hospital and University of Arkansas for Medical Sciences, Little Rock, AR 72202, USA
Curr Opin Cardiol 24:113-8. 2009..Current approaches to single ventricle physiology as well as areas of controversy will be reviewed...
Venovenous extracorporeal membrane oxygenation for cyanotic congenital heart diseaseMichiaki Imamura
Department of Pediatric and Congenital Heart Surgery, Arkansas Children's Hospital, Little Rock, AR 72202, USA
Ann Thorac Surg 78:1723-7. 2004..Palliative surgical procedures may be safely undertaken during extracorporeal support. Viral pneumonia is a risk for prolonged support. Venovenous extracorporeal membrane oxygenation is useful in these high-risk patients...
Big help for small heartsMichael L Schmitz
University of Arkansas for Medical Sciences, School of Medicine, Department of Anesthesiology, Arkansas Children s Hospital, USA
J Ark Med Soc 102:81-4. 2005..UAMS physicians and nurses and ACH nurses and staff are here to care for these children both directly and by providing support to pediatricians and primary care physicians within Arkansas and the surrounding states...
Management of abdominal compartment syndrome during extracorporeal life supportRegina Okhuysen Cawley
University of Arkansas for Medical Sciences College of Medicine, Department of Pediatrics, Little Rock, Arkansas, USA
Pediatr Crit Care Med 8:177-9. 2007..To describe the successful use of a peritoneal dialysis catheter for emergent decompression of abdominal compartment syndrome during extracorporeal life support for septic shock...
Implantation of a Berlin Heart ventricular assist deviceR D B Jaquiss
Division of Pediatric Cardiothoracic Surgery, University of Arkansas for Medical Sciences and Arkansas Children s Hospital, Little Rock, AR, USA
Semin Thorac Cardiovasc Surg Pediatr Card Surg Annu 14:120-5. 2011....
Hemorrhagic stroke in a child with low total serum cholesterol and a pulsatile left ventricular assist deviceMichael Schmitz
Pediatric Cardiothoracic Anesthesiology and Surgery, Arkansas Children s Hospital, Little Rock, AR 72202 3500, USA
Artif Organs 33:1030-2. 2009..We present a case of a hemorrhagic stroke that occurred in a 6-year-old, severely malnourished child who had just received augmentation of cardiac output with a pulsatile left ventricular assist device...
Atrial septal dissection late after congenital heart surgeryKenneth R Knecht
University of Arkansas for Medical Sciences, Little Rock, AR, USA
Ann Thorac Surg 92:1522-4. 2011..No identifiable predisposing risk was found prior to or at the time of surgical repair. Considerable risk of significant morbidity and even mortality attends atrial dissection due to the risk of rupture...
Endothelin receptors, localized in sympathetic nerve terminals of the heart, modulate norepinephrine release and reperfusion arrhythmiasMitsuhiro Isaka
Pediatric Cardiac Surgery, Arkansas Children s Hospital, 800 Marshall Street, Slot 677, Little Rock, AR 72202, USA
Basic Res Cardiol 102:154-62. 2007..These studies provide the first evidence that both ETA and ETB receptors, located in the sympathetic nerve varicosities, modulate NE release, at least in part, in association with reperfusion arrhythmias...
Management of Ebstein's anomaly and pure tricuspid insufficiency in the neonateRobert D B Jaquiss
Division of Pediatric Cardiothoracic Surgery, Arkansas Children s Hospital and University of Arkansas for Medical Sciences, Little Rock, Arkansas 72202, USA
Semin Thorac Cardiovasc Surg 19:258-63. 2007..With the application of these various approaches, the outlook for neonatal Ebstein's anomaly has improved remarkably...
Magnetic resonance flow analysis of classic and extracardiac Fontan procedures: the seesaw signS Bruce Greenberg
Arkansas Children s Hospital, Department of Pediatric Radiology, University of Arkansas for Medical Sciences, 800 Marshall Street, AR 72202 3591, Little Rock, USA
Int J Cardiovasc Imaging 20:397-405; discussion 407-8. 2004..Energy inefficiencies lead to Fontan procedure failures. Our purpose was to quantify energy inefficiencies of various Fontan procedures using flow analysis...
Carrier-mediated norepinephrine release and reperfusion arrhythmias induced by protracted ischemia in isolated perfused guinea pig hearts: effect of presynaptic modulation by alpha(2)-adrenoceptor in mild hypothermic ischemiaJun ichi Oka
Department of Cardiovascular Surgery, Hokkaido University School of Medicine, N14W5, Kita ku, Sapporo 060 8648, Japan
J Pharmacol Exp Ther 303:681-7. 2002....
Cardiopulmonary bypass influences the plasma levels of calcitonin gene-related peptides in dogs: effects of hemofiltration and hemodilutionMitsuhiro Isaka
Department of Cardiovascular Surgery, Hokkaido University School of Medicine, Kita 14, Nishi 5, Kita ku, Sapporo 060 8648, Japan
Res Vet Sci 82:110-4. 2007..Significant differences were found between the two groups in the CGRP amount in hemofiltration. The results show that hemofiltration should be used during CPB to decrease the plasma levels of CGRP...
Simplified technique for patch augmentation and chorda reconstruction of left atrioventricular valve in complete atrioventricular septal defectToshifumi Murashita
Department of Cardiovascular Surgery, Hokkaido University Hospital, Sapporo, Japan
J Card Surg 18:253-6. 2003..This technique could be one of the options in the repair of valves in order to avoid valve replacement in a small infant, although material of patch and reoperation need to be considered...
Experimental studies on artificial blood usage for hemodilution during cardiopulmonary bypassMitsuhiro Isaka
Department of Cardiovascular Surgery, Hokkaido University School of Medicine, Sapporo, Japan
Ann Thorac Cardiovasc Surg 11:238-44. 2005..05). CONCLUSIONS: The present study demonstrated possible benefits of the new PFC emulsion during cardiac surgery by counteracting the adverse effects of hemodilution during CPB...
Sympathetic denervation and reinnervation after the maze procedureMegumi Mabuchi
Department of Nuclear Medicine, Hokkaido University Graduate School of Medicine, Sapporo, Japan
J Nucl Med 46:1089-94. 2005..Such adrenergic nerve changes may be correlated, at least in part, with changes in left ventricular function after this procedure...
Experimental study of pegylated liposomal hemoglobin on norepinephrine release and reperfusion arrhythmias in isolated guinea pig heartsMitsuhiro Isaka
Department of Cardiovascular Surgery, Hokkaido University School of Medicine, Sapporo, Japan
Ann Thorac Cardiovasc Surg 13:391-5. 2007..This study was to evaluate the effects of the timing of the administration of pegylated liposomal Hb (LHb, P(50)=40-45 mmHg, 1 mg/mL) on NE release and VF...
The extracardiac Fontan procedure without cardiopulmonary bypass: technique and intermediate-term resultsAnji T Yetman
Department of Cardiovascular Surgery, The University of Arkansas for Medical Sciences and Arkansas Children's Hospital, Little Rock 72202-3591, USA
Ann Thorac Surg 74:S1416-21. 2002..CONCLUSIONS: At intermediate term follow-up, the ECF without CPB appears to be safe and technically reproducible in selected cases. Ongoing follow-up of these patients is necessary to document the theoretical advantages of avoiding CPB...
Giant pseudoaneurysm of the right ventricular outflow tract after repair of truncus arteriosus: evaluation by MR imaging and surgical approachToshifumi Murashita
Department of Cardiovascular Surgery, Hokkaido University Hospital, Sapporo, Japan
Eur J Cardiothorac Surg 22:849-51. 2002..The defect was successfully repaired with reconstruction using a monocuspid outflow patch. MRI provided useful information for deciding the surgical approach...
