Subvalvular pulmonic stenosis

Pulmonic stenosis.

Subvalvular Aortic Stenosis.

Subvalvular aortic stenosis (SAS) is a congenital heart defect that causes fixed form of hemodynamically significant left ventricular outflow tract (LVOT) obstruction with progressive course. It has a spectrum of anatomy. It appears usually beyond infancy, causes left ventricular hypertrophy and myocardial dysfunction, and tends to involve the aortic and mitral valves in its progressive course....

Acquired Pulmonic Stenosis

A 15-vear-old girl was referred to the University of Michigan Medical Center for evaluation of a svstolic imiurmiiur that had been discovered by her local physician during a routine physical exanmination. MIultiple previous examinationls hadl disclosed no evidence of heart disease. There was no history suggesting rheumiiatic fever, and the patient had never received radiation therapy. A systemi...

Severe Congenital Pulmonic Stenosis

IN THE literature, indicationis given for surgical correction of congenital pulmonic stenosis have emphasized chiefly the degree of right ventricular hypertension or the gradient across the obstrueted orifice.1-4 We wish to present 2 cases of severe stenosis, as judged by the size of orifice visualized at operationi, in which right ventricular systolic pressure was less than 90 mm. of inercury....

Fluid dynamics of aortic stenosis: subvalvular gradients without subvalvular obstruction.

Analysis of a tapering, pulsatile flow field predicts that substantial subvalvular pressure gradients exist in patients with valvular aortic stenosis (AS) without invoking a second anatomic site of obstruction. Using a catheter with two laterally mounted micromanometers, we examined the left ventricle in 11 patients with AS, mean age 64 +/- 11 years (+/- SD); the mean valve area was 1.0 +/- 0.3...