Ventricular Outflow Tract Aneurysm Research Articles

Left ventricular outflow tract aneurysm in postoperative isolated ventricular inversion.

Left ventricular outflow tract aneurysm in postoperative isolated ventricular inversion.

Left Ventricular Outflow Tract Aneurysm in Postoperative Isolated Ventricular Inversion

Left Ventricular Outflow Tract Aneurysm in Postoperative Isolated Ventricular Inversion

Abstract 14148: Left Ventricular Outflow Tract Pseudoaneurysm in a Pediatric Patient: An Unusual Presentation of Endocarditis

Description of Case: A 12-year-old male with known bicuspid aortic valve presented with one month of progressive weight loss and subjective fevers. Transthoracic echocardiogram was concerning for a new left ventricular outflow tract (LVOT) aneurysm (figure 1). His aortic valve stenosis and regurgitation had notably progressed compared to a prior study one year ago. He was urgently referred for cardiac computed tomographic angiography (CCTA), which demonstrated a pseudoaneurysm of the LVOT inferior to the aortic valve and irregularly thickened aortic valve leaflets with a notable perforation (figure 2). Blood cultures were positive for Viridans streptococci, confirming the diagnosis of infective endocarditis. The patient was referred for a Bentall procedure with LVOT pseudoaneurysm repair. Pre-operative transesophageal echocardiogram demonstrated a communication of the non-coronary cusp of the aortic valve and LVOT. Ultimately, aortic root replacement was performed with a 23mm homograft. Our patient recovered well from surgery and now has excellent clinical status with normal aortic valve function. Discussion: Pseudoaneurysm of the LVOT as a result of infective endocarditis is a rare diagnosis, especially in the pediatric population. Of the case reports published, it is most seen in the setting of infection involving the native aortic valve but has also been reported after aortic valve replacement. As in our patient, the most commonly reported location involves the mitral-aortic intervalvular fossa. Symptoms have insidious onset and the diagnosis requires a high level of suspicion. A multimodal imaging approach is warranted for optimal diagnosis and treatment.

Frequency of various cardiac complications in children with repaired tetralogy of Fallot identified by computer tomography

BACKGROUND: Tetralogy of Fallot represents 710% of all cases of congenital heart disease, as it occurs in approximately 0.5 per 1,000 live births and is the second most common form of complex congenital heart disease. Advances in diagnosis, surgical techniques, and postoperative treatment have led to an increasing number of patients reaching adulthood, with a dramatic increase in the survival rate to almost 90% at 30 years, thereby creating a need for long-term monitoring of certain anatomic parameters to identify complications in a timely manner. This study aimed to investigate the frequency of computed tomography detected complications after radical correction of Tetralogy of Fallot in pediatric patients.
 AIM: to identify markers between the most frequency computed tomography detected complications after repair of Tetralogy of Fallot in pediatric patients.
 MATERIALS AND METHODS: A retrospective analysis was conducted on 613 patients with Tetralogy of Fallot from October 2011 to June 2020. The study included a total of 116 patients (69 men and 47 women) who experienced complications after a repair of Tetralogy of Fallot, as identified by computed tomography. At the time of repair of Tetralogy of Fallot, the patients average age ranged from 10 to 36 months (mean: 12 months), average body weight was 21 kg, average height was 105.4 cm, and average body surface area was 0.74 m2. The patients median age at the time of the computed tomography examination was 17.5 years (age range: 736 years).
 RESULTS: Among the 116 patients who exhibited complications after an repair of Tetralogy of Fallot, 49 had a pulmonary artery stenosis, 92 had a pulmonary artery branch stenosis (56 of them of the left main pulmonary artery branch, and 36 of them of the right main pulmonary artery branch), 8 had a right ventricular outflow tract stenosis, 32 had a ventricular septal defect, 1 had a shunt thrombosis, 12 had a postoperative deformation of the pulmonary artery, 10 exhibited a marked right ventricular dilatation, 2 had an right ventricular outflow tract aneurysm, and 6 suffered from conduit calcification and stenosis. Moreover, patients with left main pulmonary artery branch stenosis had a 6.5 times greater chance of developing an right main pulmonary artery branch stenosis in (p 0.001).
 CONCLUSION: The most frequently computed tomography detected complications after a repair of Tetralogy of Fallot were pulmonary artery stenosis and pulmonary artery branch stenosis. Patients with pulmonary artery stenosis and pulmonary artery branch stenosis exhibit no significant differences in terms of age, anthropometric parameters (height, weight, and body surface area), and gender distribution in the presence or absence of different stenosis types (pulmonary artery, right main pulmonary artery branch, or left main pulmonary artery branch). However, an right main pulmonary artery branch stenosis increases the chances of developing an left main pulmonary artery branch stenosis.

Huge right ventricular outflow tract aneurysm late following total repair of tetralogy of Fallot leading to orthotopic heart transplantation

Described herein are 3 patients who underwent successful orthotopic heart transplantation (OHT) because of huge, calcified right ventricular outflow tract (RVOT) aneurysms after repair of tetralogy of Fallot 35, 43, and 59 years earlier. Two of the 3 patients developed recurring episodes of ventricular tachycardia simulating arrhythmogenic right ventricular cardiomyopathy.

Right Ventricular Outflow Tract Tachycardia: a Common Rhythm due to an Uncommon Etiology.

Right ventricular outflow tract (RVOT) aneurysm is a rare cause of RVOT ventricular tachycardia (RVOT-VT). We present a very unusual case of RVOT-VT due to an RVOT aneurysm diagnosed by cardiovascular magnetic resonance imaging.

Novel use of a 3D printed heart model to guide simultaneous percutaneous repair of severe pulmonary regurgitation and right ventricular outflow tract aneurysm

We describe percutaneous repair of severe pulmonary regurgitation and a right ventricular outflow tract pseudoaneurysm in a 19-year-old patient after repair of pulmonary atresia, ventricular septal defect, and major aortopulmonary collaterals. A 3D printed model of his heart was used to simulate percutaneous repair with a closure device in the aneurysm neck and a Venus P-valve in the right ventricular outflow tract. The encouraging findings from the simulation allowed us to plan the complex procedure effectively with a successful outcome and avoidance of surgery.

TCTAP C-216 Transcatheter Closure of Left Ventricular Outflow Tract (LVOT) Aneurysm in a Marfan Syndrome (MFS) Patient

TCTAP C-216 Transcatheter Closure of Left Ventricular Outflow Tract (LVOT) Aneurysm in a Marfan Syndrome (MFS) Patient

Giant Left Ventricular Outflow Tract Aneurysm Presenting as Unstable Angina: An Unusual Case

Giant Left Ventricular Outflow Tract Aneurysm Presenting as Unstable Angina: An Unusual Case

Cardiovascular MR Imaging after Surgical Correction of Tetralogy of Fallot: Approach Based on Understanding of Surgical Procedures

Tetralogy of Fallot (TOF) is one of the most common congenital heart diseases for which patients are referred for postoperative magnetic resonance (MR) imaging evaluation. The most common surgical procedures for TOF repair include infundibulectomy, transannular pulmonary artery patch repair, and right ventricle-pulmonary artery conduit placement. In the past few decades, surgery has proved successful, but most patients require repeat imaging throughout their lives. MR imaging is now frequently used for morphologic and functional evaluation after TOF repair. The most common late postoperative sequelae and residual lesions include right ventricular outflow tract aneurysm and dyskinesis, conduit failure, pulmonary regurgitation, tricuspid regurgitation, right ventricular failure, residual main and branch pulmonary artery stenosis, branch pulmonary artery aneurysm, left pulmonary artery kinking, and residual or recurrent ventricular septal defect. The imaging approach for the evaluation of patients with repaired TOF should be guided by the surgical procedure used and the complications that are expected. Knowledge of the most common postoperative problems and their cardiovascular MR imaging appearances is essential for good radiology practice in this clinical setting.

Fragmented QRS complexes predict right ventricular dysfunction and outflow tract aneurysms in patients with repaired tetralogy of Fallot

BackgroundFragmented QRS complexes (fQRS) correlate with myocardial scar, and may predict arrhythmias in patients with repaired tetralogy of Fallot (TOF). We investigated the relationship between fQRS in operated TOF patients with right ventricular (RV) dysfunction and RV outflow tract (RVOT) aneurysm. MethodsWe studied 56 operated TOF patients with moderate/severe pulmonary regurgitation, referred for cardiac magnetic resonance imaging (MRI) over a 4.5year period. The presence of fQRS (additional notches in the R/S wave in ≥2 contiguous leads on the ECG) was correlated with MRI findings. ResultsfQRS was observed in 44 (78.6%) patients. Patients with fQRS had significantly larger RV end diastolic volume index (RVEDVi; 162ml vs 141ml, p=0.028) and RV end systolic volume index (RVESVi; 88ml vs 70ml, p=0.031). Increasing number of leads with fragmentation was independently associated with increasingly lower RV ejection fraction (adjusted co-efficient −0.97, 95%CI −1.83 to −0.12, p=0.026), greater pulmonary regurgitation fraction (1.65, 0.28 to 3.01, p=0.019), larger RVEDVi (6.78, 2.00 to 11.56, p=0.006) and RVESVi (5.41, 1.66 to 9.15, p=0.005). Anterior fragmentation correlated most significantly with RV dysfunction (p<0.05). fQRS had no significant association with LV dysfunction. Presence of any fQRS (OR 17.5, 95%CI 2.1–147.8, p=0.009) and inferior fQRS (OR 9.0, 95%CI 2.7–30.1, p<0.001) were found to be significant predictors for RVOT aneurysm. ConclusionsThe presence of fQRS on the ECG is significantly associated with RV dysfunction and RVOT aneurysms in repaired TOF patients. Increasing burden of fragmentation, especially in the anterior leads, is associated with increasing RV dysfunction.

Atypical left ventricular outflow tract aneurysm diagnosed by three-dimensional echocardiography

Atypical left ventricular outflow tract aneurysm diagnosed by three-dimensional echocardiography

Right ventricular outflow tract aneurysm with thrombus

Right ventricular outflow tract (RVOT) aneurysm is a known complication of tetralogy of Fallot repair when a ventriculotomy is done. It leads to RV dysfunction and may require re-operation. We describe a rare instance of a patient who developed an RVOT aneurysm after trans-ventricular repair of tetralogy of Fallot, which was complicated with the formation of a thrombus in the aneurysm sac. The patient underwent re-operation with thrombectomy, excision of the RVOT aneurysm and pulmonary valve replacement. To the best of our knowledge, the occurrence of this combination and its implications have not been reported.

Indications for reoperation late after correction of tetralogy of Fallot

Correction of tetralogy of Fallot has excellent long-term results. The present retrospective study investigates the indications for reoperation late after corrective surgery. Data from 914 consecutive cases who underwent correction of tetralogy of Fallot in our department between 1960 and 2002 were retrospectively reviewed and analysed. In 91 patients, a total of 102 reoperations were performed late after repair. The mean time interval between corrective surgery and the first reoperation was 12.8 years. The main indication for reoperation was residual ventricular septal defect in nearly half of the cases, mostly isolated, but also in combination with a right ventricular outflow tract aneurysm or pulmonary stenosis. One-fourth of reoperated patients underwent a procedure on their pulmonary artery or pulmonary valve: replacement of pulmonary valve, replacement of primary implanted pulmonary artery conduits with or without concomitant surgery, and surgery for isolated peripheral pulmonary stenosis. The remaining indications were right ventricular outflow tract aneurysms and others. Aneurysms of the right ventricular outflow tract were seen mostly after the use of autologous - untreated - pericardial patch in 18 of 21 cases. The number of reoperations for residual ventricular septal defect decreased during the study period. The primary use of conduits led to an increased number of reoperations for conduit exchange due to degeneration or failure. Use of an untreated autologous pericardial patch for enlargement of the right ventricular outflow tract should be avoided due to increased risk for aneurysm formation.

Mid-Term Experience with Valved Bovine Jugular Vein Conduits

From June 1999 to January 2004, 43 children underwent implantation of a valved bovine jugular vein conduit and correction of complex congenital heart defects. Median age was 1.98 years (range, 11 days - 13.3 years). There were 7 early deaths (16.3%) unrelated to conduit failure or thrombosis. Median follow-up of 36 survivors was 24 months (range, 1-48 months, quartile range, 12-48 months), total follow-up was 78 patient-years. There were 3 late deaths (8.3%) due to infection, pulmonary thromboembolism, and sudden cardiac arrest after re-operation to repair a right ventricular outflow tract aneurysm. There were 2 conduit explantations due to dysfunction and suspected endocarditis. Three patients underwent balloon dilatation of distal stenoses. The mean peak gradient through the pulmonary anastomosis was 15 mm Hg (range, 3-42 mm Hg) among patients free from re-intervention. No severe valve regurgitation was observed. Freedom from re-intervention was 72% at 48 months. This conduit remains a good alternative to homografts. Causes of distal stenosis must be clarified, guidelines for prophylactic anticoagulation must be created, and the role of percutaneous balloon dilatation established.

Delayed presentation of left ventricular outflow tract aneurysm after penetrating cardiac trauma

We report a case of posttraumatic left ventricular outflow tract aneurysm in a patient who had a stab injury to the chest requiring emergency operation 40 years previously. After apparent decades without symptoms, the patient presented with exertional dyspnea. Clinical and echocardiographic assessment revealed aortic regurgitation and left ventricular outflow tract aneurysm. Injuries to the chest wall that penetrate the heart and great vessels are life-threatening and require emergency operative intervention. However, these injuries rarely, as in this case, result in chronic cardiac aneurysm and aortic valvular incompetence.

Right ventricular function in adults with repaired tetralogy of Fallot assessed with cardiovascular magnetic resonance imaging: detrimental role of right ventricular outflow aneurysms or akinesia and adverse right-to-left ventricular interaction

ObjectivesWe examined the relationship among biventricular hemodynamics, pulmonary regurgitant fraction (PRF), right ventricular outflow tract (RVOT) aneurysm or akinesia, and baseline and surgical characteristics in adults with repaired tetralogy of Fallot (rTOF). BackgroundThe precise relationship of pulmonary regurgitation with biventricular hemodynamics has been hampered by limitations of right ventricular (RV) imaging. MethodsWe assessed 85 consecutive adults with rTOF and 26 matched healthy controls using cardiovascular magnetic resonance imaging. ResultsPatients had higher right ventricular end-diastolic volume index (RVEDVi) (p < 0.001), right ventricular end-systolic volume index (RVESVi) (p < 0.001), right ventricular mass index (RVMi) (p < 0.001), and lower right ventricular ejection fraction (RVEF) (p < 0.001) and left ventricular ejection fraction (LVEF) (p = 0.002) compared to controls. The PRF (range 0% to 55%) independently predicted RVEDVi (p < 0.01) and the latter predicted RVESVi (p < 0.01) and RVMi (p < 0.01). The RVOT aneurysm/akinesia was present in 48/85 (56.9%) of patients and predicted RV volumes (RVEDVi, p = 0.01, and RVESVi, p = 0.03). There was a negative effect of RVOT aneurysm/akinesia and RVMi on RVEF (p < 0.01 and p = 0.02, respectively). There was only a tendency among patients with transannular or RVOT patching toward RVOT aneurysm/akinesia (p = 0.09). The LVEF correlated with RVEF (r = 0.67, p < 0.001). ConclusionsPulmonary regurgitation and RVOT aneurysm/akinesia were independently associated with RV dilation and the latter with RV hypertrophy late after rTOF. The RVOT aneurysm/akinesia was common but related only in part to RVOT or transannular patching. Both RV hypertrophy and RVOT aneurysm/akinesia were associated with lower RVEF. Left ventricular systolic dysfunction correlated with RV dysfunction, suggesting an unfavorable ventricular-ventricular interaction. Measures to maintain or restore pulmonary valve function and avoid RVOT aneurysm/akinesia are mandatory for preserving biventricular function late after rTOF.

Aneurysm of the right ventricular outflow tract: A complication of aorta-main pulmonary (central) shunt

The ascending aorta-main pulmonary artery (central) polytetrafluoroethylene (PTFE) Gore-Tex shunt was introduced in 1975 by Gazzaniga and coworker. It is a widely used palliative procedure. We present a case study with an unusual late complication. An aneurysm was discovered at autopsy in a patient who was diagnosed at birth with hypoplastic right ventricle, pulmonary valve atresia, small main and branched pulmonary arteries. At 4 days of age, the patient underwent an aorta to main pulmonary artery (PTFE) Gore-Tex shunt. Subsequent echocardiogram showed dilatation of the right ventricular outflow tract. To our knowledge, this is the first reported case of right ventricular outflow tract (RVOT) aneurysm following central aortopulmonary shunt.

Extracardiac valved conduits in the pulmonary circuit

Extracardiac valved conduits represent one of the weakest facets of reconstructive surgery for congenital heart disease in that they invariably need to be replaced because of growth of the patient or because of valve or conduit failure. Between 1979 and 1989, 141 patients had 169 valved conduits placed between the heart and the pulmonary artery circuit. There were 81 male and 60 female patients, aged 2 days to 35 years (mean age, 5.9 years), with 46 patients less than 1 year of age. We performed primary repair in 117 patients; in this group, there have been 28 conduit replacements in 27 patients. In 17 patients initial repair with a conduit was performed elsewhere and we replaced these conduits in 15 and removed them in 2. A further group of 9 patients were seen after repair of tetralogy of Fallot or double-outlet right ventricle, with severe pulmonary incompetence or right ventricular outflow tract aneurysm. All had valved conduits inserted as secondary procedures. The types of valved conduits used were xenograft (n = 126) and homograft (n = 43). There were six hospital deaths (3.6%; 70% confidence limits [CL], 2% to 6%) and seven late deaths (4.1%; CL, 2.5% to 6.5%) in a total of 169 conduit insertions. Forty-five conduits have been removed and 43 reinserted without early or late mortality (0%; CL, 0% to 4%). Actuarial survival after conduit insertion was 87% at 5 years (CL, 80% to 92%), including operative mortality. Actuarial freedom from conduit replacement was 37% at 5 years (CL, 20% to 56%). Conduit insertion in infants and small children ensures subsequent replacement, but this can be done at low risk. Our policy therefore has been to attempt to match the conduit to the size of the patient rather than to insert a large conduit. Our current approach is to use a Dacron conduit at initial repair to establish a prosthetic sewing margin adjacent to the left main and left anterior descending coronary arteries for safe subsequent replacement, preferably with a cryopreserved homograft. Replacement should be done before development of important right ventricular dysfunction.

Calcified right ventricular outflow tract aneurysm after repair of tetralogy of Fallot

Right ventricular outflow tract obstruction in tetralogy of Fallot often includes the pulmonic valve, its anulus, the main and branch pulmonary arteries in addition to the expected infundibular narrowing. Widening of this multiple area of obstructions frequently necessitates patch augmentation. Both synthetic (Ivalon ®, Dacron ®, Teflon ®, Gore-Tex ®, Impra ®) and natural (dura mater and parietal pericardium) materials are used for this purpose. Debate has arisen as to which materials are preferable. 1