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Question: Is echocardiographic examination is useful for surgical method decision in patients with tetralogy of Fallot (TOF)? Finding: Various echocardiographic parameters serve as predictors for determining surgical methods for TOF patients. However, the PV morphology and tissue characteristics should also be considered. Meaning: A full dependence on the size of the pulmonary valve annulus (PVA), the z score, and the ratio of the size of PVA to aortic valve annulus or descending aorta surgery may result in inadequate surgical results during TOF total correction. |
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Purpose: This study aimed to analyze changes in QRS duration and cardiothoracic ratio (CTR) following pulmonary valve replacement (PVR) in patients with tetralogy of Fallot (TOF). Methods: Children and adolescents who had previously undergone total repair for TOF (n=67; median age, 16 years) who required elective PVR for pulmonary regurgitation and/or right ventricular out tract obstruction were included in this study.... |
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Purpose: The present study aimed to evaluate progression and prognosis according to the palliation method used in neonates and early infants aged 3 months or younger who were diagnosed with pulmonary atresia with ventricular septal defect (PA VSD) or tetralogy of Fallot (TOF) with severe pulmonary stenosis (PS) in a single tertiary hospital over a period of 12 years. Methods: Twenty... |
Recently, surgical outcomes of repair of tetralogy of Fallot (TOF) have improved. For patients with TOF older than 3 months, primary repair has been advocated regardless of symptoms. However, a surgical approach to symptomatic TOF in neonates or very young infants remains elusive. Traditionally, there have been two surgical options for these patients: primary repair versus an initial aortopulmonary shunt... |
Repair of tetralogy of Fallot (TOF) has shown excellent outcomes. However it leaves varying degrees of residual hemodynamic impairment, with severe pulmonary stenosis (PS) and free pulmonary regurgitation (PR) at both ends of the spectrum. Since the 1980s, studies evaluating late outcomes after TOF repair revealed the adverse impacts of residual chronic PR on RV volume and function; thus, a... |
Purpose : Aortic valve or aortic root (AoRo) replacement is occasionally required because of AoRo dilatation and aortic regurgitation (AR) in repaired tetralogy of Fallot (TOF). We evaluated AoRo size and possible factors associated with its hemodynamic nature in patients with repaired TOF. Methods : We investigated 130 repaired TOF patients more than 15 years of age who followed-up by... |
Purpose : The purpose of this study was to analyze the changes of the late potential of Signal- averaged electrocardiography (SAECG) and Electrocardiography (ECG) parameters during follow up of those who had taken surgical repair of Tetralogy of Fallot (TOF). Methods : Nine patients who had taken surgical repair of TOF since 1985 checked SAECG and standard 12 leads ECG twice... |
Purpose : The purpose of this study is to determine whether the new pulmonary valve reconstruction technique prevents short-term postoperative pulmonary regurgitation and improves early and mid-term clinical outcome. Methods : We reviewed postoperative echocardiographic variables and chest X-ray films from 31 patients who had undergone valve reconstruction(pulmonary valve reconstruction group : PVR) for the repair of TOF between April 2000... |
Purpose : This study was performed to find the chief clinical problems associated with the ages of adult patients of tetralogy of Fallot(TOF) who had undergone total correction. Methods : Of the 30 patients who were registered at the Grown-Up Congenital Heart Disease (GUCH) Clinic of Samsung Medical Center for TOF, a retrospective investigation was carried out on 28 patients who... |
Congenital absence of the pulmonary valve associated with Tetralogy of Fallot(TOF) is a relatively rare cardiac malformation. In the majority of cases, this lesion is associated with ventricular septal defect, obstructive pulmonary valve annulus, and massive dilatation of the pulmonary arteries. This combination of lesions is often called tetralolgy of Fallot and absent pulmonary valve. Although survival beyond infancy is frequent, a number of... |
Purpose : The object of this study is to determine whether QT interval variability in patients with postoperative tetralogy of Fallot increases. Methods : We enrolled 41 patients who had total correction of tetralogy of Fallot, and 31 healthy controls. They were 6-12 years old. Patients were divided into 2 groups : arrhythmia-positive patients(n=10) who had ventricular premature contractions more than... |
Purpose : Pulmonary artery stenosis is mainly complicated by aortopulmonary shunt or total correction of tetralogy of Fallot(TOF). Results of surgical angioplasty are poor and the success rate of balloon angioplasty is 53-72%. Endovascular stents have been applied to these lesions. The purpose of this study is to evaluate the early results of stent implantation in postoperative pulmonary artery stenosis... |
Purpose : The morphogenic mechanism of tetralogy of Fallot is known to be an antero-superior deviation and hypertrophy of the subpulmonary infundibulum. We performed this study to measure the subpulmonary infundibulum in patients with tetralogy of Fallot and compare those with normal control. Methods : Echocardiographic data and medical reports of 12 patients, with classical tetralogy of Fallot who were diagnosed... |
Purpose : Pulmonary artery stenosis is a common finding in post-operative tetralogy of Fallot (TOF), and it is one of the most frequent indication of reoperation. The objective of this study was to determine the procedural success rate of balloon angioplasty(BAP), endovascular stent, and reoperation for pulmonary artery stenosis in terms of its clinical impact on the subsequent management of... |
Purpose : After repair of tetralogy of Fallot(TOF), ventricular arrhythmia and sudden death remain as serious late complications which are due to right ventricular systolic and diastolic overloading, exposure to hypoxia and surgical scar. Among the various methods for predicting the risk of such complications, we evaluated signal average ECG(SAECG), QRS duration, QT and JT dispersion, cardiothoracic(CT) ratio, age at... |
Purpose : This study aimed to characterize the autonomic and chaotic control of heart rate and circadian rhythm in asymptomatic patients with postoperative tetralogy of Fallot(pTOF). Methods : Twenty-four-hour electrocardiogram recordings were obtained in 30 asymptomatic pTOF patients and in 30 age-and sex-matched controls, aged between 6 and 11 years. The data was digitized and partitioned into sections of 30-... |
Purpose : Branch pulmonary artery stenosis remains a clinically challenging lesion. Results of surgical angioplasty are rarely rewarding, and balloon angioplasty is not uniformly successful. So, endovascular stent has been applied recently to these lesions. But this new modality has not been full yevaluated. The aim of this study is to evaluate the short-term result of stent implantation in postoperative branch pulmonary artery stenosis. Methods :... |
Purpose : The association of the tetralogy of Fallot(TOF) with the complete form of atrioventricular septal defect(AVSD) is rare cardiac malformation.The predominant clinical findings in both groups of cases were those associated with tetralogy of Fallot, but certain features need to be emphasized, however. Methods : Forteen(2%) out of 659 patients with tetralogy of Fallot seen at the department of pediatrics, Seoul... |
The hemodynamic feature of the tetralogy of Fallot (TOF) is best characterized by equality of left and right ventricular peak systolic pressure. The interventricular septum is flattened and thickened. Even after the right ventricular pressure is normalized in the postoperative period, the morphological abnormality continues for some time. We have analyzed the morphological changes of the IVS echocardiographically after total... |
Exercise tolerance tests were performed using treadmill in 21 patients with tetralogy of Fallot (TOF) repaired earlier (4.8 years in mean) and 10 subjects with small ventricular septal defect or normal heart, aged 8-16 years. Pre and postexercise echocardiography and cardiac catheterization were also performed and the hemodynamic data were compared with exercise parameters. The following results were obtained. 1)... |
The echocardiographic features of Tetralogy of Fallot were analysed on 102 patients with Tetralogy of Fallot, proven by cardiac catheterization and angiocardiography. The dimension of the cardiac chambers and the relationship of contiguous structures were determined by M-mode scanning technics. The most characteristic echocardiographic finding of Tetralogy of Fallot was abrupt ending of the interventricular septal echoes with the aorta... |
Tetralogy of Fallot is one of the most common cyanotic congenital heart disease. It consists of four features anatomically pulmonic stenosis or atresia, ventricular septal defect, overriding aorta, and right ventricular hypertrophy. One hundred and ninety one cases of Tetralogy of Fallot were confirmed by cardiaccatheterization at Severance Hospital. These were observed on general feature, cardiac catheterization findings and outcome... |