pulmonary valve stenosis/نقص الأكسجة

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Management of neonatal critical pulmonic stenosis in the balloon valvotomy era.

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We evaluated our recent experience with management of neonatal critical pulmonic stenosis and intact ventricular septum between 1982 and 1988. Thirty-nine patients (aged less than 3 months) were treated initially by operation (group A, n = 19) or with balloon pulmonary valvotomy (group B, n = 20).

Determinants of successful balloon valvotomy in infants with critical pulmonary stenosis or membranous pulmonary atresia with intact ventricular septum.

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OBJECTIVE This study reviewed our experience with percutaneous balloon valvotomy in infants with critical pulmonary stenosis or membranous pulmonary atresia with intact ventricular septum and defined the anatomic and hemodynamic characteristics of infants in whom this procedure is successful and

Cardiovascular adjustments to acute hypoxemia superimposed on chronic hypoxemia in lambs.

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Cardiovascular responses to acute hypoxemia are in part mediated through adrenergic and chemoreceptor stimulation. In chronic hypoxemia the response to these stimuli may be blunted. Therefore, we determined whether the cardiovascular responses to acute hypoxemia superimposed on 3-4 wk of chronic

Life-threatening pulmonary edema following unilateral stent implantation for bilateral branch pulmonary stenosis: recovery after contralateral stent implantation.

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A 13-year-old girl, who was suffering complications with bilateral pulmonary artery stenosis after intracardiac repair for tetralogy of Fallot, suffered life-threatening left pulmonary bleeding and edema following inadvertent unilateral stent implantation for a left pulmonary stenosis. Pulmonary

Ebstein's anomaly associated with severe valvar pulmonary stenosis: successful palliation with balloon pulmonary valvuloplasty in an adult.

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We report a 52-year-old adult with Ebstein's anomaly associated with severe valvar pulmonary stenosis, secundum atrial septal defect, polycythemia, hypoxemia, and severe exertional limitations. Balloon pulmonary valvuloplasty relieved the valvar obstruction, reduced the degree of tricuspid

Effects of balloon pulmonary valvuloplasty on atrial shunting--a patient with pulmonary valve stenosis and a large secundum atrial septal defect.

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Percutaneous balloon valvuloplasty has been established as an effective treatment for pulmonary valve stenosis (PS) in children and adults. However, there are few reports of the use of this technique in patients with other cardiac anomalies. We report the performance of balloon pulmonary

Apoptosis of cardiomyocytes in children with right ventricular pressure overload with and without hypoxemia.

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BACKGROUND Cardiomyocyte apoptosis has been implicated in ventricular remodeling and initiation of cardiac failure. We sought to determine the severity of right ventricular (RV) cardiomyocyte apoptosis in cyanotic and acyanotic children with RV pressure overload. METHODS Fourteen patients, seven

[A rare adult case of double-outlet right ventricle without pulmonary stenosis: an autopsy case].

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Double outlet right ventricle (DORV) is a rare cardiac malformation especially in adulthood. We report a woman with DORV who survived to the age of 33 years. She had not been seriously limited, before she visited our hospital for cardiac evaluation at the age of 25 years. She was cyanotic, and had

ECMO support in cardiac intervention of severe pulmonary stenosis: A case report.

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Patients of critical pulmonary artery stenosis would face severe hypoxemia, cardiac failure as well as massive hemorrhage during percutaneous balloon dilation and pulmonary arterial stent implantation. Here, we present a case in which the elective use of extracorporeal membrane

Echocardiographic findings of pulmonary atresia or critical pulmonary stenosis and intact ventricular septum in utero.

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BACKGROUND Neonates with right ventricular outflow obstruction and intact ventricular septum show serious hemodynamic problems, such as severe hypoxemia, congestive heart failure due to massive tricuspid regurgitation, respiratory distress related to huge pulmonary hypoplasia or ventricular

Left ventricular ultrastructure in pulmonary stenosis and in tetralogy of Fallot.

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Twelve patients underwent haemodynamic studies and myocardial biopsies: 7 with pulmonary stenosis (PS) and 5 with tetralogy of Fallot (TOF). Their ages ranged between 2 and 43 years. Right ventricular pressure was 128 +/- 43 mmHg in PS and 98 +/- 8 mmHg in TOF. Aortic blood oxygen saturation was

Surgical intervention in neonates with critical pulmonary stenosis.

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The surgical experience with 18 consecutive neonates with critical pulmonary stenosis (PS) and intact ventricular septum was reviewed. All patients had cardiac catheterization with calculation of right ventricular volume. Group A patients (N = 8) had a small right ventricular end-diastolic volume

Carcinoid heart disease with severe hypoxia due to interatrial shunt through patent foramen ovale.

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Carcinoid heart disease occurs in approximately half of patients who have carcinoid syndrome and is the leading cause of death among these patients. It is typically manifest as right-sided valvular lesions, usually tricuspid insufficiency and pulmonary valve stenosis. This case report describes the

Cyanosis after surgical correction of pulmonary valve stenosis: an old problem revisited.

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The presence of cyanosis following repair of congenital cardiac defects may result from several different mechanisms. We report two patients in whom early postoperative arterial hypoxemia manifested by cyanosis was caused by right-to-left interatrial shunting. Two-dimensional contrast

Effect of increased whole blood viscosity on regional blood flows in chronically hypoxemic lambs.

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In chronic hypoxemia blood flow and oxygen supply to vital organs are maintained, but to nonvital organs they are decreased. We measured organ blood flows (microspheres) and whole blood viscosity in 10 chronically hypoxemic lambs, with an atrial septal defect and pulmonary stenosis, and in 8 control

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