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Results for “PULMONARY VALVE STENOSIS”

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At least 937 records · Page 52Linked to original sources
PubMed1992

Hemodynamic findings during exercise on a bicycle ergometer following balloon valvuloplasty of pulmonary stenosis in children and adolescents.

Eleven patients (4 female, 7 male), age range 3.3 to 24.8 years (mean 11.10 years) treated for isolated pulmonary stenosis underwent cardiac catheterization and percutaneous transluminal balloon valvuloplasty (PTVP). The right ventricular systolic pressure (RVSP) before valvuloplasty ranged from 31 to 127 mmHg (mean 79 mmHg) decreasing to 28 to 62 mmHg (mean 42 mmHg) immediately after the dilatation. The peak systolic gradient of the pulmonary valve (delta p RV-PA) before valvuloplasty ranged from 22 to 107 mmHg (mean 61 mmHg) and decreased to a range of 14 and 45 mmHg (mean 23 mmHg) immediately after the dilatation. Balloon valvuloplasty was performed using balloons of 13 to 31 mm in diameter. On 11 patients cardiac catheterization and Doppler echocardiography were repeated between 11 months and 5.3 years (mean 3.11 years) after the balloon valvuloplasty showed a further significant fall in the gradient of pressure. The right ventricular systolic pressure ranged from 20 to 51 mmHg (mean 31.7 mmHg) while the transpulmonary gradient varied from 3 to 24 mmHg (mean 11.6 mmHg). At the time of follow-up examination the patients were aged between 7.2 and 25.7 years (mean 15.9 years). On average the second catheterization was performed 3.11 years following the first hemodynamic study. The follow-up examination encompassed clinical examination, electrocardiogram, Doppler echocardiography, and right heart cardiac catheterization. During right heart cardiac catheterization the children exercised on a bicycle ergometer for three min at 50 or 100 W depending on their body surface area. During this exertion, pressures of the right ventricle and the pulmonary artery as well as heart rate and oxygen saturation were recorded.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1983

[Assessment of the branches of the pulmonary artery by 2-dimensional echocardiography].

Sixty three cases of Fallot's tetralogy aged from 1 month to 30 years old, were studied by 2D echocardiography to evaluate the diameter of the pulmonary arteries and to detect stenosis of the main pulmonary arteries. The right pulmonary artery was visualised clearly enough to be measured in all 63 cases whereas the left pulmonary artery could only be adequately recorded in 58/63 cases. The junction of the two pulmonary arteries was confirmed by 2D echo in 61/63 cases; in two cases, the left pulmonary artery was not connected (2/63), confirmed at angiography and surgery. Six stenoses of the pulmonary arteries, confirmed surgically (6/7), were detected by 2D echo but there were also 3 false positive results. The pulmonary arteries were measured from suprasternal views; the values obtained ranged from 3 to 15 mm. There was a good correlation with the angiographic measurements (R = 0.81 for the right pulmonary, and R = 0.82 for the left pulmonary arteries). Good correlations were also observed between the peroperative and 2D echo measurements (R = 0.84 for the right pulmonary; R = 0.77 for the left pulmonary artery). 2D echocardiography is a non-invasive reliable technique for visualising the pulmonary arteries and their origin, for measuring the calibre of these vessels and for detecting severe proximal pulmonary artery stenosis.

Adolescent↗
PubMed1983

Plain chest radiography of congenital heart disease in adults.

The plain chest radiograph can be an invaluable aid in the diagnosis of congenital heart disease in adults. Evaluation of the chest radiograph is made simpler and more accurate by the use of a systematic approach based on physiology. In many instances, a definitive diagnosis can be made; in others, only a differential diagnosis can be arrived at. The majority of adults with congenital heart disease will have some telltale abnormality on the chest radiograph that will occasionally furnish the first clue to the presence of a congenital anomaly.

Adult↗
PubMed1991

Double outlet left ventricle: diagnosis with magnetic resonance imaging.

A complex congenital cardiac malformation in a female patient was evaluated several times by angiocardiography and echocardiography in childhood but a definite diagnosis was not established. Segmental analysis of the heart and the great vessels by magnetic resonance imaging when the patient was 34, however, showed a double outlet left ventricle in which the aorta was situated anterior to and to the left of the pulmonary trunk and an associated subaortic ventricular septal defect with pulmonary valve stenosis. This is the first time that this extremely rare cardiac malformation has been diagnosed by magnetic resonance imaging.

Aorta↗
PubMed2003

Pulmonary vein stenosis mimicking chronic lung disease.

UNLABELLED: The presence of recurrent respiratory symptoms and right heart enlargement in an ex-premature infant is suggestive of chronic lung disease. Pulmonary vein stenosis is a rare, progressive disorder that produces similar symptoms and signs. A case is reported in which pulmonary vein stenosis was revealed by Doppler echocardiography, and this application is recommended in similar cases. Pulmonary vein stenosis is an extremely rare and progressive disorder, which, if left untreated, is usually fatal. The possibility of this diagnosis may not be considered during clinical examination and may be overlooked during routine echocardiography. CONCLUSION: This report describes a patient with pulmonary vein stenosis in whom the diagnosis was delayed as she had symptoms and signs more commonly associated with chronic lung disease.

Chronic Disease↗
PubMed2003

[Left ventricular outflow tract obstruction in transposition of the great arteries. Correlation between anatomic and echocardiographic findings].

INTRODUCTION AND OBJECTIVES: Left ventricle outflow tract obstructions in transposition of the great arteries are frequent. We report the correlations between two-dimensional echocardiographic and autopsy findings to draw attention to the usefulness of this diagnostic method in the preoperative evaluation of these anomalies. MATERIAL AND METHODS: Of 73 hearts with transposition of great arteries, 26 specimens (38%) with different types of left ventricular outflow tract obstruction were selected to establish the relationship between an anatomical substrate of obstruction and echocardiographic findings in equivalent hearts. Pulsed-wave Doppler studies of velocities at the site of stenosis were done with high-pulse-rate frequency and continuous wave techniques. Eight echocardiographic studies of anatomical specimens and 10 studies in equivalent hearts used for comparison were analyzed to determine correlations. RESULTS: Twenty-eight obstructions were found; the most frequent type being left ventricular outflow tract alteration (77%). The most frequent anomalies were posterior deviation of the infundibular septum, cone-like obstruction, pulmonary valve stenosis and septal hypertrophy, followed by congenital mitral valve anomalies (15 %) and anomalies of the tricuspid valve (8%). Two-dimensional echocardiographic studies revealed different types anatomical obstruction. CONCLUSIONS: We found precise correlations between the anatomical obstruction and its echocardiographic image. Evaluating electrocardiographic findings is important because these findings can affect the choice of surgical treatment or even the decision to use surgery.

Humans↗