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Biomedical subjects

S Shrivastava

Publications and source records attributed to S Shrivastava.

At least 217 records · Page 12Linked to original sources
PubMedDate not supplied

Echocardiographic identification of infradiaphragmatic total anomalous pulmonary venous drainage--a report of 2 cases.

Two neonates with infradiaphragmatic type of total anomalous pulmonary venous drainage are reported in whom complete diagnosis was obtained by cross sectional (2D) echocardiography with Doppler and color flow mapping. Visualisation of a dilated venous channel draining into the portal venous system and separate from inferior vena cava and descending aorta in the subcostal view indicates infradiaphragmatic site of drainage of pulmonary veins in a patient with total anomalous pulmonary venous drainage. Doppler and color flow imaging help in defining the direction of blood flow and presence of turbulence in the common venous channel.

Echocardiography, Doppler↗
PubMedDate not supplied

Mitral valve repair: techniques and results.

From January 1986 to December 1989, seventy patients underwent mitral valve repair. Sixty-four patients had severe mitral stenosis (MS) and mitral regurgitation (MR), while six patients had severe mitral regurgitation (MR) only. The technique used was a combination of posterior semicircular annuloplasty, mitral commissurotomy and chordal shortening. There were two operative deaths. All except three of the surviving patients are asymptomatic. There has been no episode of thromboembolism. One patient has required valve replacement and two others have had a revision of the repair in the follow up period. Predischarge and late (3 months to 3 years) echocardiography suggests that the repair is satisfactory.

Adolescent↗
PubMedDate not supplied

Echocardiographic assessment of the size of aortic and pulmonary valve annulus before balloon valvoplasty.

Two dimensional echocardiographic measurements of the size of aortic and pulmonary valve annulus were made in 60 patients before balloon valvoplasty and compared to the angiographic measurements. Aortic valve annulus was measured in 34 patients (26 with valvar aortic stenosis and 8 with discrete subaortic stenosis) in the parasternal long axis or apical 5-chamber views. The pulmonary valve annulus was measured in 26 patients with valvar pulmonary stenosis (PS) in the parasternal short axis view of the right ventricular outflow view. The visualization of the annulus was good in all except 2 patients with valvar PS. Angiographic measurements of the aortic and pulmonary valve annulus were made in aortic root and right ventricular angiograms respectively, taken in both right and left anterior oblique views. There was an excellent correlation between the measurements of the annulus size by the two techniques (r value for pulmonary valve 0.91; for aortic valve 0.96; over all 0.94). Echocardiography can accurately measure valve annulus size and help in choosing balloon dilatation catheter of appropriate size before the valvoplasty procedure.

Adolescent↗
PubMedDate not supplied

Long-term efficacy of balloon pulmonary valvoplasty in late adult life.

We performed percutaneous transluminal balloon valvoplasty in a 53-year-old woman with severe valvar pulmonary stenosis. Peak systolic gradient across the pulmonary valve reduced from 112 mm Hg before valvoplasty to 47 mm Hg immediately after dilatation, which further fell to 30 mm Hg six months after valvoplasty with virtual disappearance of gradient at one year follow up. Patients of isolated valvar pulmonary stenosis presenting in late adult life can be adequately and safely treated with balloon valvoplasty, without recourse to surgery with excellent immediate and long-term results.

Catheterization↗