Cardiovascular shunts
Updates to Article Attributes
Cardiovascular (cardiac) shunts are an abnormal connection between the pulmonary and systemic circulations. Most commonly they are the result of congenital heart disease.
Pathology
Blood can either be shunted from the systemic circulation to pulmonary circulation (left-to-right shunt) or between the pulmonary circulation and systemic circulation (right-to-left shunt).
Left-to-right shunt
In a left-to-right shunt oxygenated blood flows directly from the systemic circulation to the pulmonary circulation, which results in in decreased tissue oxygenation through reduced cardiac output. Causes include:
- cardiac
-
vascular pulmonary shunts
- total/partial anomalous pulmonary venous return (TAPVR/PAPVR)
Right-to-left shunt
In a right-to-left shunt deoxygenated blood flows directly from the pulmonary circulation to the systemic circulation, decreasing tissue oxygenation by reducing the oxygen content of systemic arterial blood. Causes include:
- cardiac
- vascular pulmonary shunts
- parenchymal intrapulmonary shunts
Radiographic features
Imaging findings vary depending on the underlying aetiology, please see articles listed above for further details.
See also
-<p><strong>Cardiovascular (cardiac) shunts</strong> are an abnormal connection between the pulmonary and systemic circulations. Most commonly they are the result of <a href="/articles/congenital-cardiovascular-anomalies">congenital heart disease</a>. </p><h4>Pathology</h4><p>Blood can either be shunted from the systemic circulation to pulmonary circulation (<a href="/articles/left-to-right-shunt">l</a>eft-to-right shunt) or between the pulmonary circulation and systemic circulation (right-to-left shunt). </p><h5>Left-to-right shunt</h5><p>In a left-to-right shunt oxygenated blood flows directly from the systemic circulation to the pulmonary circulation, which results in decreased tissue oxygenation through reduced cardiac output. Causes include:</p><ul>- +<p><strong>Cardiovascular (cardiac) shunts</strong> are an abnormal connection between the pulmonary and systemic circulations. Most commonly they are the result of <a href="/articles/congenital-cardiovascular-anomalies">congenital heart disease</a>. </p><h4>Pathology</h4><p>Blood can either be shunted from the systemic circulation to pulmonary circulation (<a href="/articles/left-to-right-shunt">l</a>eft-to-right shunt) or between the pulmonary circulation and systemic circulation (right-to-left shunt). </p><h5>Left-to-right shunt</h5><p>In a left-to-right shunt oxygenated blood flows directly from the systemic circulation to the pulmonary circulation, which results in decreased tissue oxygenation through reduced cardiac output. Causes include</p><ul>
-<li><a href="/articles/lutembacher-syndrome">Lutembacher syndrome</a></li>-</ul><h5>Right-to-left shunt</h5><p>In a right-to-left shunt deoxygenated blood flows directly from the pulmonary circulation to the systemic circulation, decreasing tissue oxygenation by reducing the oxygen content of systemic arterial blood. Causes include:</p><ul>- +</ul><h5>Right-to-left shunt</h5><p>In a right-to-left shunt deoxygenated blood flows directly from the pulmonary circulation to the systemic circulation, decreasing tissue oxygenation by reducing the oxygen content of systemic arterial blood. Causes include</p><ul>
-<li><a href="/articles/double-outlet-right-ventricle">double outlet right ventricle</a></li>- +<li><a href="/articles/double-outlet-right-ventricle">double outlet right ventricle</a></li>
-</ul><h4>Radiographic features</h4><p>Imaging findings vary depending on the underlying aetiology, please see articles listed above for further details. </p><h4>See also</h4><ul><li><a title="extracardiac shunts" href="/articles/extracardiac-shunts">extracardiac shunts</a></li></ul>- +</ul><h4>Radiographic features</h4><p>Imaging findings vary depending on the underlying aetiology, please see articles listed above for further details. </p><h4>See also</h4><ul><li><a href="/articles/extracardiac-shunts">extracardiac shunts</a></li></ul>
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