Pulmonary stenosis
The pulmonary valve is too tight so that the flow of blood from the right ventricle of the heart into the pulmonary artery is impeded. This means the right ventricle must pump harder than normal to overcome the obstruction. If the stenosis is severe, babies may become blue (cyanotic). Older children often have no symptoms. Treatment is needed if the pressure in the right ventricle is higher than normal. The obstruction can usually be relieved by a procedure called balloon valvuloplasty or by open heart surgery during which the stenotic valve is opened. The outlook after either procedure is favorable.

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pulmonary stenosis n abnormal narrowing of the orifice between the pulmonary artery and the right ventricle called also pulmonic stenosis

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congenital narrowing of the outlet of the right ventricle of the heart to the pulmonary artery. The defect may be in the pulmonary valve (valvular stenosis) or in the outflow tract of the right ventricle below the valve (infundibular stenosis). It may be isolated or combined with other heart defects (e.g. tetralogy of Fallot). Severe pulmonary stenosis may produce angina pectoris, faintness, and heart failure. The defect is corrected by surgery.

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(PS) narrowing of the opening between the pulmonary artery and the right ventricle, usually at the level of the valve leaflets.

Medical dictionary. 2011.

Look at other dictionaries:

  • pulmonary stenosis — ▪ congenital defect       narrowing of either the pulmonary valve the valve through which blood flows from the right ventricle, or lower chamber, of the heart on its way to the lungs or the infundibulum, or of both. The infundibulum (Latin:… …   Universalium

  • pulmonary stenosis — congenital narrowing of the outlet of the right ventricle of the heart to the pulmonary artery. The defect may be in the pulmonary valve (valvular stenosis) or in the outflow tract of the right ventricle below the valve (infundibular stenosis).… …   The new mediacal dictionary

  • pulmonary stenosis — noun abnormal narrowing of the opening into the pulmonary artery from the right ventricle • Hypernyms: ↑stenosis, ↑stricture • Part Holonyms: ↑tetralogy of Fallot, ↑Fallot s tetralogy, ↑Fallot s syndrome …   Useful english dictionary

  • Pulmonary stenosis, peripheral, with cholestasis — Also known as arteriohepatic dysplasia or Alagille syndrome, this ia a genetic disorder characterized by jaundice in the newborn period, liver disease with cholestasis, peripheral pulmonic stenosis and unusual face. Children with Alagille… …   Medical dictionary

  • Стеноз Легочного Ствола (Pulmonary Stenosis) — врожденное сужение отверстия, ведущего из правого желудочка сердца в легочную артерию. Данный дефект может развиться в результате наличия какого либо дефекта клапанов легочного ствола (клапанный стеноз (valvular stenosis)) или участка ниже этого… …   Медицинские термины

  • Cholestasis with peripheral pulmonary stenosis — Also known as arteriohepatic dysplasia or Alagille syndrome, this ia a genetic disorder characterized by yellowing of the skin (jaundice) in the newborn period, liver disease with cholestasis, peripheral pulmonic stenosis and unusual face.… …   Medical dictionary

  • Peripheral pulmonary stenosis with cholestasis — Also known as arteriohepatic dysplasia or Alagille syndrome, this ia a genetic disorder characterized by jaundice in the newborn period, liver disease with cholestasis, peripheral pulmonic stenosis and unusual face. Children with Alagille… …   Medical dictionary

  • Pulmonary valve stenosis — Infobox Disease Name = PAGENAME Caption = Pulmonary valve stenosis Width = 250px DiseasesDB = 11025 ICD10 = ICD10|I|37|0|i|30, ICD10|I|37|2|i|30, ICD10|Q|22|1|q|20 ICD9 = ICD9|424.3, ICD9|746.02 ICDO = OMIM = 265500 MedlinePlus = 001096… …   Wikipedia

  • Stenosis — A narrowing, as in aortic stenosis (narrowing of the aortic valve in the heart), pulmonary stenosis (narrowing of the pulmonary valve in the heart), pyloric stenosis (narrowing of the outlet of the stomach), spinal stenosis (narrowing of the… …   Medical dictionary

  • stenosis — n. the abnormal narrowing of a passage or opening, such as a blood vessel or heart valve. See: aortic stenosis, carotid artery stenosis, mitral stenosis, pulmonary stenosis, pyloric stenosis …   The new mediacal dictionary

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