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{{Infobox medical condition (new)
{{Short description|Condition involving obstruction of blood flow from the ventricles of the heart}}
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A '''ventricular outflow tract obstruction''' is one type of [[congenital heart defect]] in which either the right or left [[ventricular outflow tract]] is blocked or obstructed.  These obstructions represent a spectrum of disorders.
[[File:Gray internal structure of heart.png|thumb|Diagram of the internal structure of the heart, showing the ventricular outflow tracts.]]


==Right side==
'''Ventricular outflow tract obstruction''' (VOTO) is a condition characterized by a blockage or narrowing in the pathways through which blood exits the ventricles of the heart. This obstruction can occur in either the left or right ventricular outflow tract, leading to various clinical manifestations depending on the severity and location of the obstruction.
A '''right ventricular outflow tract obstruction''' (RVOTO) may be due to a defect in the [[Pulmonary valve|pulmonic valve]], the supravalvar region, the [[Conus arteriosus|infundibulum]], or the pulmonary artery.<ref>{{cite journal |authors=Bashore TM |journal=Circulation |title=Adult congenital heart disease: right ventricular outflow tract lesions |year=2007 |volume=115 |issue=14 |pages=1933–1947 |pmid=17420363 |doi=10.1161/CIRCULATIONAHA.105.592345}}</ref>
*[[Pulmonary atresia]]
*[[Pulmonary valve stenosis]]
*[[Hypoplastic right heart syndrome]]
*[[Tetralogy of Fallot]]


==Left side==
==Types==
A '''left ventricular outflow tract obstruction''' (LVOTO) may be due to a defect in the [[aortic valve]], or a defect located at the subvalvar or supravalvar level.<ref>{{cite journal |authors=Gaynor JW, Elliott MJ |journal=Journal of Heart Valve Disease |title=Congenital left ventricular outflow tract obstruction |year=1993 |volume=2 |issue=1 |pages=80–93 |pmid=7505702 }}</ref>
Ventricular outflow tract obstruction can be classified based on the affected ventricle:
*[[Aortic valve stenosis]]
 
* [[Supravalvar aortic stenosis]]
===Left Ventricular Outflow Tract Obstruction (LVOTO)===
*[[Coarctation of the aorta]]
LVOTO involves obstruction in the pathway from the left ventricle to the aorta. Common causes include:
*[[Hypoplastic left heart syndrome]]
* [[Aortic stenosis]]
* [[Hypertrophic cardiomyopathy]]
* [[Subaortic stenosis]]
 
===Right Ventricular Outflow Tract Obstruction (RVOTO)===
RVOTO involves obstruction in the pathway from the right ventricle to the pulmonary artery. Common causes include:
* [[Pulmonary stenosis]]
* [[Tetralogy of Fallot]]
* [[Double outlet right ventricle]]
 
==Causes==
The causes of ventricular outflow tract obstruction can be congenital or acquired. Congenital causes are often due to structural heart defects present at birth, while acquired causes may develop later in life due to conditions such as rheumatic heart disease or degenerative changes.
 
==Symptoms==
Symptoms of ventricular outflow tract obstruction vary depending on the severity of the obstruction and the ventricle involved. Common symptoms include:
* Shortness of breath
* Chest pain
* Fatigue
* Syncope (fainting)
* Heart murmur
 
==Diagnosis==
Diagnosis of ventricular outflow tract obstruction typically involves:
* [[Echocardiography]]
* [[Cardiac MRI]]
* [[Cardiac catheterization]]
 
==Treatment==
Treatment options depend on the severity and cause of the obstruction. They may include:
* Medications to manage symptoms
* Surgical intervention, such as valve repair or replacement
* Balloon valvuloplasty
 
==Prognosis==
The prognosis for individuals with ventricular outflow tract obstruction varies. Early detection and appropriate management can improve outcomes, but severe cases may lead to complications such as heart failure or arrhythmias.
 
==Related pages==
* [[Heart valve disease]]
* [[Congenital heart defect]]
* [[Cardiomyopathy]]


==References==
==References==
{{reflist}}
* Maron, B. J., & Maron, M. S. (2013). Hypertrophic cardiomyopathy. The Lancet, 381(9862), 242-255.
 
* Bonow, R. O., & Carabello, B. A. (2008). Aortic valve disease. Circulation, 118(8), 841-852.
{{Congenital malformations and deformations of circulatory system}}


[[Category:Cardiovascular diseases]]
[[Category:Congenital heart defects]]
[[Category:Congenital heart defects]]
{{circulatory-disease-stub}}
{{congenital-malformation-stub}}
{{stb}}
{{stb}}

Revision as of 23:51, 9 February 2025

Condition involving obstruction of blood flow from the ventricles of the heart



Error creating thumbnail:
Diagram of the internal structure of the heart, showing the ventricular outflow tracts.

Ventricular outflow tract obstruction (VOTO) is a condition characterized by a blockage or narrowing in the pathways through which blood exits the ventricles of the heart. This obstruction can occur in either the left or right ventricular outflow tract, leading to various clinical manifestations depending on the severity and location of the obstruction.

Types

Ventricular outflow tract obstruction can be classified based on the affected ventricle:

Left Ventricular Outflow Tract Obstruction (LVOTO)

LVOTO involves obstruction in the pathway from the left ventricle to the aorta. Common causes include:

Right Ventricular Outflow Tract Obstruction (RVOTO)

RVOTO involves obstruction in the pathway from the right ventricle to the pulmonary artery. Common causes include:

Causes

The causes of ventricular outflow tract obstruction can be congenital or acquired. Congenital causes are often due to structural heart defects present at birth, while acquired causes may develop later in life due to conditions such as rheumatic heart disease or degenerative changes.

Symptoms

Symptoms of ventricular outflow tract obstruction vary depending on the severity of the obstruction and the ventricle involved. Common symptoms include:

  • Shortness of breath
  • Chest pain
  • Fatigue
  • Syncope (fainting)
  • Heart murmur

Diagnosis

Diagnosis of ventricular outflow tract obstruction typically involves:

Treatment

Treatment options depend on the severity and cause of the obstruction. They may include:

  • Medications to manage symptoms
  • Surgical intervention, such as valve repair or replacement
  • Balloon valvuloplasty

Prognosis

The prognosis for individuals with ventricular outflow tract obstruction varies. Early detection and appropriate management can improve outcomes, but severe cases may lead to complications such as heart failure or arrhythmias.

Related pages

References

  • Maron, B. J., & Maron, M. S. (2013). Hypertrophic cardiomyopathy. The Lancet, 381(9862), 242-255.
  • Bonow, R. O., & Carabello, B. A. (2008). Aortic valve disease. Circulation, 118(8), 841-852.
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