Echocardiographic differentiation of infundibular from valvular pulmonary stenosis.

  title={Echocardiographic differentiation of infundibular from valvular pulmonary stenosis.},
  author={Arthur E. Weyman and James C. Dillon and Harvey B Feigenbaum and Sonia Chang},
  journal={The American journal of cardiology},
  volume={36 1},
Echocardiographic tracings of the pulmonary valve were examined in 24 normal subjects, 16 patients with valvular pulmonary stenosis and 3 patients with infundibular pulmonary stenosis. In normal subjects, atrial contraction produced a slight posterior opening motion of the pulmonary valve leaflet (a wave). This presystolic opening motion (a wave) varied with respiration, and maximal a wave depth recorded during quiet inspiration (Amax) averaged 3.7 plus or minus 1.2 (standard error of the mean… CONTINUE READING