[Aquired tricuspid stenosis (author's transl)].
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The case is presented of a patient with congenital tricuspid stenosis who was treated successfully by a palliative open operation. The preoperative diagnosis was tricuspid atresia. At operation, however, congenital tricuspid stenosis was detected and managed by commissurotomy.. The postoperative course was very good. Later, the associated ventricular septal defect (VSD), pulmonary annular stenosis, and probably the atrial septal defect (ASD) will be corrected. We emphasize the importance of diagnosing congenital tricuspid stenosis correctly, because of the possibility of operating upon the valve itself.
This report describes the first successful treatment of tricuspid stenosis by percutaneous double balloon valvotomy. There was a dramatic reduction of the tricuspid valve gradient, with an increase in calculated valve area, together with an increase in resting cardiac output and symptomatic relief. The feasibility of the non-surgical treatment of severe tricuspid stenosis was demonstrated unequivocally.
Seventeen patients (12 with native and five with prosthetic tricuspid valves) with tricuspid stenosis were studied by Doppler echocardiography followed by cardiac catheterization within 24 h. The mean tricuspid diastolic pressure gradient was calculated using the modified Bernoulli equation. Tricuspid valve area (TVA) was calculated by the pressure half-time method (TVA = 190 divided by pressure half-time). Data from Doppler echocardiography and cardiac catheterization were compared. The Doppler-derived tricuspid mean diastolic gradient was 1.9-9.9 mmHg (average 5.3 +/- 2.5 mmHg), which correlated moderately well with the catheterization-determined mean diastolic gradient of 2-17 mmHg (average 7.3 +/- 4.0 mmHg), R = 0.74, standard error of the estimate (SEE) 1.70 mmHg, Y = 0.45 x + 2.00, P less than 0.001. The Doppler-derived TVA was 0.56-1.58 cm2 (average 1.06 +/- 0.32 cm2), which correlated well with the catheterization-determined TVA of 0.4-2.2 cm2 (average 1.06 +/- 0.46 cm2), R = 0.81, SEE = 0.20 cm2, Y = 0.56 x + 0.46, P less than 0.001. Of 12 patients undergoing right ventricular angiography, the angiographic and Doppler grades of tricuspid regurgitation matched exactly in six and differed by one grade in the remaining six. This study demonstrated that Doppler echocardiography compares very well to cardiac catheterization in the quantification of tricuspid stenosis and in the assessment of concomitant tricuspid regurgitation.
Clinical tricuspid stenosis has not previously been reported in patients with systemic lupus erythematosus (SLE). A 25 year old woman with active SLE presented with signs of severe right ventricular failure. Cardiac catheterisation confirmed the diagnosis of tricuspid stenosis and regurgitation together with mitral regurgitation. This patient underwent successful tricuspid and mitral valve replacement.
A male child presented with suspicion of tricuspid stenosis. Echocardiography revealed the presence of a mass arising from the free wall of the right ventricle and causing right-ventricular inflow obstruction but not involving the tricuspid valve. The tumour was excised via right ventriculotomy using cardiopulmonary bypass, resulting in survival and a satisfactory clinical course. Histological examination showed the tumour to be a fibroma. Tricuspid stenosis is an unusual presentation of right ventricular fibroma. Careful examination is essential to early diagnosis of cardiac fibromas, particularly in children with unexplained cardiac problems. Echocardiography is still a good method for confirmation of the diagnosis and for follow-up. In view of the unknown natural history of cardiac fibroma, surgical excision should be undertaken. Early detection and prompt excision results in immediate and complete relief of symptoms and prolongs the life span.
Echocardiographic, phonocardiographic, and pulse tracing recordings demonstrated clinically unsuspected tricuspid stenosis in a 53-year-old man with a prosthetic mitral valve and signs of right heart failure. Physiologic correlates of the patient's heart sounds and diastolic murmur were studied by simultaneous M-mode echocardiograms and phonocardiograms. Cardiac catheterization and subsequent valve surgery confirmed the presence of tricuspid stenosis. It is important to consider the diagnosis of tricuspid stenosis in all patients with a history of rheumatic mitral valve disease who develop findings suggestive of right ventricular failure.
A case is presented of a 42-yr old woman with rheumatic heart disease in whom cardiac catheterization revealed severe mitral stenosis and a low cardiac output, but no gradient across the tricuspid valve. Echocardiography clearly demonstrated the presence of tricuspid stenosis and the valve was found to be severely stenotic at surgery. This establishes the value of echocardiography in detecting tricuspid stenosis and suggests that, in some cases, it may be more sensitive than cardiac catherization in detecting this lesion.
A 3.75-year-old castrated male Chesapeake Bay Retriever was referred for evaluation of tachypnea, exercise intolerance, and cyanosis. Echocardiographically, there was severe tricuspid stenosis and right-to-left atrial-level shunting of blood. Marked compensatory polycythemia had developed; the PCV was 75%. Balloon dilation of the tricuspid stenosis was performed. Subsequent echocardiographic examinations demonstrated a reduction in the pressure gradient across the tricuspid valve. The PCV returned to the reference range, and the dog's clinical status improved during the 12 months after the procedure. Tricuspid stenosis is an uncommon lesion in dogs and, in the dog of this report, was assumed to have resulted from tricuspid dysplasia. Cyanosis was a result of right-to-left shunting of blood. Limited treatment is available for dogs with cyanotic heart disease. In this dog, balloon dilation of the stenotic tricuspid valve was palliative.
A low cardiac output and high compliance of the systemic venous system may mask a resting tricuspid diastolic gradient in patients with significant rheumatic tricuspid stenosis. Thirty-three patients (mean age 28 +/- 10 years) with rheumatic tricuspid stenosis evidenced by 2-dimensional echocardiography (doming and restricted motion of all 3 tricuspid valve leaflets) were studied to expose occult and to amplify borderline and basal tricuspid valve gradients. At cardiac catheterization, the right atrium and right ventricular pressures were recorded simultaneously in the basal state, after intravenous infusion of 200, 400, 500, 700 or 1,000 ml of normal saline until a mean right atrial pressure of 12 mm Hg was achieved, and after 0.6 mg of intravenous atropine. Eleven patients (33%) had a mean tricuspid diastolic gradient of greater than 2 mm Hg at rest (group 1). After 483 +/- 240 ml of saline infusion, the mean tricuspid diastolic gradient increased from 5 +/- 2 to 9 +/- 3 mm Hg (p less than 0.001), secondary to a marked rise in right atrial pressure from 8 +/- 3 to 12 +/- 2 mm Hg (p less than 0.001). Concomitantly, there was no increase in right ventricular end-diastolic pressure, although the heart rate increased from 76 +/- 13 to 79 +/- 12 beats/min (p less than 0.01).(ABSTRACT TRUNCATED AT 250 WORDS)
Absence of the pulmonary valve occurs usually in association with tetralogy of Fallot and occasionally with an atrial septal defect or as an isolated lesion. Very rarely it occurs with tricuspid atresia, intact ventricular septum, and dysplasia of the right ventricular free wall and of the ventricular septum. We present the clinical, anatomic, and histologic findings of a new case, and for the first time, the data from two patients with absent pulmonary valve and severe tricuspid stenosis, who exhibited similar histologic findings. We also reviewed the clinical and anatomic data of 24 previously published cases and compared them with the new cases. In all three new cases, the myocardium of the right ventricle was very abnormal. In the two cases with tricuspid stenosis, large segments of myocardium were replaced with sinusoids and fibrous tissue. In the case with tricuspid atresia, the right ventricular free wall contained only fibroelastic tissue. The ventricular septum in all three patients showed asymmetric hypertrophy and in two of the three patients, multiple sinusoids had replaced large segments of myocardial cells. The left ventricular free wall myocardium and the walls of the great arteries were unremarkable. Our data indicate that myocardial depletion involving the right ventricular free wall and the ventricular septum and its replacement by sinusoids and fibroelastic tissue occur not only in cases of absent pulmonary valve with tricuspid atresia but also in cases of absent pulmonary valve with tricuspid stenosis. The degree of myocardial depletion varies and is more severe when the tricuspid valve is atretic.
Rheumatic mitral and tricuspid stenosis in a young female were successfully dilated using Inoue balloon catheter for both the lesions in a single intervention. The Inoue balloon catheter was used in the 'over the wire' technique for tricuspid valvotomy.