[Present state of surgical treatment of pulmonary stenosis].
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OBJECTIVE: The aim of this study is to determine the level of clinical auscultation skills in pediatric residents at Duke University Medical Center. METHODS: Forty-seven residents from pediatrics and joint medicine/pediatrics training programs at Duke University Medical Center were enrolled in this study. They were asked to examine the cardiovascular patient simulator, Harvey, and report their findings. Five common conditions seen in the pediatric population were presented: ventricular septal defect, atrial septal defect, pulmonary valve stenosis, combined aortic valve stenosis and insufficiency, and innocent systolic ejection murmur. The responses were scored by the number of features and diagnoses accurately reported. Five pediatric cardiologists and cardiologists in training were also asked to participate in a manner similar to the trainees. RESULTS: The mean score of features identified for the resident group was 11.4 +/- 2.6 of a possible 19. The diagnostic accuracy was 33%. There was no significant difference between residents by year of training or by type of residency program, although there was a trend toward improved performance with more training. The difference in performance between the pediatric cardiology group and the residents group was striking. The condition that was most frequently misdiagnosed was the innocent systolic ejection murmur. CONCLUSIONS: The clinical auscultation skills of pediatric residents in this study were suboptimal. There was a trend toward improvement as training progressed, although not statistically significant. These skills are likely to improve further with increased exposure to patients with cardiovascular disease especially in the ambulatory care setting.
The paper gives the results of catheter balloon valvuloplasty (CVP) in 1042 patients: in 557 on the mitral valve, 148 on the aortic valve, 42 on the tricuspid valve, 211 on the pulmonary valve, 84 for aortic coarctation. It analyzes the late outcomes of CVP in 157 patients with mitral stenoses, 31 with congenital aortic ostial stenosis. The paper also demonstrates the good efficiency and relative safety of CVP.
Percutaneous balloon pulmonary valvuloplasty for congenital pulmonary valve stenosis was performed in 40 adult patients (aged 18 to 56 years). The duration of follow-up was 24.5 +/- 11.5 months. The peak systolic pressure gradient from the right ventricle to the pulmonary artery decreased from 107 +/- 29 mm Hg to 37 +/- 25 mm Hg immediately after the procedure. On follow-up, gradient obtained either by cardiac catheterization or Doppler echocardiography was 31 +/- 13 mm Hg. In eight patients with residual gradient after valvuloplasty of > 50 mm, the mean peak systolic gradient decreased from 74.5 +/- 18.3 to 33.5 +/- 13.9 mm Hg on follow-up. Thus balloon pulmonary valvuloplasty is a safe and effective procedure for the treatment of adult patients with pulmonic stenosis; there is a tendency for high residual gradients to regress on follow-up.
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The classical treatment for congenital heart defects in adult patients has been surgical correction. Since the publication of Rashkind and Gruntzig's studies, interventional cardiology approaches have been developed to treat congenital and acquired heart defects. We discuss the current applications of this form of treatment and communicate our experience with percutaneous transcatheter procedures in adult patients for pulmonary valve stenosis, aortic valve stenosis, native coarctation, postsurgical coarctation, peripheral pulmonary artery stenosis, atrial septal defect, ventricular septal defect, ductus arteriosus and embolization therapy. We conclude that interventional treatment in adults with congenital heart defects is safe and feasible, that the indications for this approach to treatment are increasing, that it can be undertaken in patients of any age including high-risk patients, and that as with all interventional procedures, the learning curve must be successfully surmounted.
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