RT Book, Section
A1 Doherty, Gerard M.
SR Print(0)
ID 1004107132
T1 Pulmonary Stenosis, Congenital
T2 Quick Answers Surgery
YR 2010
FD 2010
PB The McGraw-Hill Companies
PP New York, NY
SN 
LK accesssurgery.mhmedical.com/content.aspx?aid=1004107132
RD 2024/04/18
AB •  An  obstructive  congenital  heart  lesion•  Pulmonary  stenosis  (PS)  impedes  forward  blood  flow  and  increases  ventricular  afterload•  Without  ventricular  septal  defect  (VSD),  obstructive  lesion  causes  hypertrophy  of  corresponding  ventricle•  Ventricular  hypertrophy  can  cause  dysrhythmias,  ischemia,  and  fibrosis•  In  most,  commissures  are  fused  causing  a  dome  like  structure•  Most  patients  have  patent  foramen  ovale•  Few  patients  have  atrial  septal  defect  (ASD)•  May  be  associated  with  poorly  developed  right  ventricle,  may  require  urgent  intervention•  Isolated  infundibular  stenosis  (below  pulmonary  valve)  is  extremely  rare  and  often  less  severe