No abstract available.
Balloon Valvuloplasty* ; Constriction, Pathologic*

No abstract available.
Balloon Valvuloplasty* ; Pulmonary Valve Stenosis* ; Pulmonary Valve*

No abstract available.
Balloon Valvuloplasty* ; Tricuspid Valve Stenosis* ; Tricuspid Valve*

No abstract available.
Balloon Valvuloplasty* ; Child* ; Constriction, Pathologic* ; Humans

BACKGROUND: Alterations in ventricular loading conditions lead to changes in action potential duration via mechanoelectrical feedback. A decrease in load immediately leads to prolongation of repolarization. QT interval and QT dispersion were measured to determine the long-term effect of changes in ventricular systolic load on the ventricular repolarization. METHOD: Corrected QT interval and QT dispersion were measured in 26 patients before and 3-6 months after valvuloplasty for pulmonary stenosis. To determine the effect of ventricular load on ventricular repolarization, patients were divided in 2 groups; Group 1 was those patients with a greater than 30 mmHg and Group 2 was those patients with a less than 30 mmHg decrease in right ventricular systolic pressure. RESULTS: Corrected QT interval (412.6+/-14.5 msec vs 426.4+/-16.8 msec, p < 0.05) and QT dispersion (35.0+/-7.3 msec vs 45.7+/-14..1 msec, p < 0.05)were increased significantly only in Group 1 after vlavuloplasty. CONCLUSION: It suggested that mechanoelectrical interactions are operative for long duration in humans that changes in ventricular load after successful pulmonary valvuloplasty showed long-term effect on the ventricular repolarization.
Action Potentials ; Balloon Valvuloplasty* ; Blood Pressure ; Humans ; Pulmonary Valve Stenosis*

A woman presented severe mitral stenosis at 34 weeks' gestation. She did not respond to medical therapy, and underwent successful percutaneous mitral balloon valvuloplasty with monitored anesthetic care. The remainder of her pregnancy was uncomplicated, and she delivered a healthy infant at 38 weeks' gestation. We proved monitored anesthetic care is available method in percutaneous mitral balloon valvuloplasty for severe mitral stenosis during pregnancy.
Balloon Valvuloplasty* ; Female ; Humans ; Infant ; Mitral Valve Stenosis* ; Pregnancy*

Percutaneous balloon valvuloplasty is considered the standard of care for treatment of valvular pulmonic stenosis, a common congenital defect in dogs. Supravalvular pulmonic stenosis is a rare form of pulmonic stenosis in dogs and standard treatment has not been established. Although, there have been reports of successful treatment of supravalvular pulmonic stenosis with surgical and stenting techniques, there have been no reports of balloon dilation to treat dogs with this condition. Here, a case of supravalvular pulmonic stenosis diagnosed echocardiographically and angiographically in which a significant reduction in pressure gradient was achieved with balloon dilation alone is presented.
Angiography ; Angioplasty, Balloon, Coronary ; Animals ; Balloon Valvuloplasty ; Congenital Abnormalities ; Dogs* ; Pulmonary Valve Stenosis* ; Standard of Care ; Stents

Transcatheter interventions are widely used for diagnosis and treatment of congenital heart disease. Complications associated with transcatheter interventions are uncommon. However, when they occur they are most often self- limited. Rarely, however, serious catheter related complications occur that may require emergent surgical intervention. In this case, the right common iliac artery was disrupted during transcatheter balloon valvuloplasty during the treatment of congenital aortic stenosis in a 2-week-old baby. After immediate surgical intervention with bleeding control using two balloon catheters the baby did well. Here we report this case and review the medical literature.
Aortic Valve Stenosis ; Balloon Valvuloplasty ; Catheters ; Heart Diseases ; Hemorrhage ; Iliac Artery ; Rupture

Percutaneous mitral ballon valvuloplasty(PMV) is an effective nonsurgical procedure for patients with mitral stenosis. PMV was performed in 13 patients(mean age, 41 years) with mitral stenosis. All patients underwent echophonocardiography(Echophono) before and after PMV. Two dilatation balloons were used in which the diameters approximately equaled the mitral valve annulus diameter as determined. After PMV, the mean mitral valve pressure gradient decreased(22.3+/-1.89mmHg to 5.2+/-2.6mmHg), the mean left atrial pressure decreased(21.3+/-5.1mmHg to 9.0+/-4.5mmHg) and the mitral valve area increased from 0.8+/-0.3cm2 to 1.7+/-0.6cm2. The Echophono data are correlated with clinical and hemodynamic changes produced by PMV. PMV resulted in echophono changes consistent with decresed severity of mitral stenosis ; shortening of Q-S1, from 88+/-14 to 73+/-11 mses(p<0.01) and (Q-S1)-(S2-OS), from 0.9+/-1.7 to -2.1+/-1.6(p<0.001) ; prolongation of S2-OS from 80+/-15 to 103+/-14 msec(p<0.001) and increase of EF slope from 14.7+/-5.4 to 26.7+/-8.1 mm/sec(p<0.001). Compared with pre-PMV, post-PMV Echophono showed significant decrease in the severity of mitral stenosis. Thus Echophono is a simple, low cost method helpful in evaluation and follow-up patients undergoing PMV.
Atrial Pressure ; Balloon Valvuloplasty ; Dilatation ; Follow-Up Studies ; Hemodynamics ; Humans ; Mitral Valve ; Mitral Valve Stenosis

Percutaneous mitral balloon valvuloplasty (PMBV) is the treatment of choice for mitral stenosis. Only a few reported cases have been reported in PMBV patients worldwide. In this study, a case of a 34 year-old female with infective endocarditis a year after PMBV is presented. The patient presented with fever, and peripheral vascular symptoms. Transthoracic echocardiography showed vegetation on the anterior mitral leaflets and Staphylococcus Viridans was isolated from blood cultures. The patient was successfully treated with Amoxicillin + Clavulate and Gentamicin. Further studies on the correlation between PMBV and infective endocarditis are needed.
Amoxicillin ; Balloon Valvuloplasty* ; Echocardiography ; Endocarditis* ; Female ; Fever ; Gentamicins ; Humans ; Mitral Valve Stenosis ; Staphylococcus