Unilateral pulmonary edema

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Unilateral pulmonary oedema represents only 2% of cardiogenic pulmonary oedema with predilection for the right upper lobe and is strongly associated with severe mitral regurgitation ^1,2. It It is hypothesised that the regurgitation jet is directed towards the right superior pulmonary vein thus preferentially increasing the hydrostatic pressure in the right upper lobe ³.

Pathology

Aetiology

Unilateral oedema with ipsilateral pathology ⁴:

severe mitral valve regurgitation
patient positioning
re-expansion pulmonary oedema
pulmonary ~~vein occlusion~~venous obstructive syndrome
congenital or surgical right-to-left shunt (e.g. Blalock-Taussig shunt)

Unilateral oedema with perfusion abnormality in the contralateral lung ⁴:

unilateral pulmonary embolism
unilateral hypoplasia of pulmonary artery
Swyer-James syndrome
unilateral emphysema/bullae

-<p><strong>Unilateral pulmonary oedema </strong>represents only 2% of <a href="/articles/cardiogenic-pulmonary-oedema">cardiogenic pulmonary oedema</a> with predilection for the <a href="/articles/right-upper-lobe">right upper lobe</a> and is strongly associated with severe <a href="/articles/mitral-valve-regurgitation">mitral regurgitation</a> <sup>1,2</sup>. It is hypothesised that the regurgitation jet is directed towards the <a href="/articles/pulmonary-veins">right superior pulmonary vein</a> thus preferentially increasing the hydrostatic pressure in the right upper lobe <sup>3</sup>. </p><h4>Pathology</h4><h5>Aetiology</h5><p>Unilateral oedema with ipsilateral pathology <sup>4</sup>:</p><ul>
~~-<li>severe <a href="/articles/mitral-valve-regurgitation">mitral valve regurgitation</a>~~
~~-</li>~~
~~-<li>patient positioning</li>~~
~~-<li><a href="/articles/re-expansion-pulmonary-oedema">re-expansion pulmonary oedema</a></li>~~
~~-<li><a href="/articles/pulmonary-vein-obstruction">pulmonary vein occlusion</a></li>~~
~~-<li>congenital or surgical right-to-left shunt (e.g. <a href="/articles/blalock-taussig-shunt-2">Blalock-Taussig shunt</a>)</li>~~
+<p><strong>Unilateral pulmonary oedema </strong>represents only 2% of <a href="/articles/cardiogenic-pulmonary-oedema">cardiogenic pulmonary oedema</a> with predilection for the <a href="/articles/right-upper-lobe">right upper lobe</a> and is strongly associated with severe <a href="/articles/mitral-valve-regurgitation">mitral regurgitation</a> <sup>1,2</sup>. It is hypothesised that the regurgitation jet is directed towards the <a href="/articles/pulmonary-veins">right superior pulmonary vein</a> thus preferentially increasing the hydrostatic pressure in the right upper lobe <sup>3</sup>.  </p><h4>Pathology</h4><h5>Aetiology</h5><p>Unilateral oedema with ipsilateral pathology <sup>4</sup>:</p><ul>
+<li><p>severe <a href="/articles/mitral-valve-regurgitation">mitral valve regurgitation</a></p></li>
+<li><p>patient positioning</p></li>
+<li><p><a href="/articles/re-expansion-pulmonary-oedema">re-expansion pulmonary oedema</a></p></li>
+<li><p><a href="/articles/pulmonary-venous-obstructive-syndrome" title="Pulmonary venous obstructive syndrome">pulmonary venous obstructive syndrome</a></p></li>
+<li><p>congenital or surgical right-to-left shunt (e.g. <a href="/articles/blalock-taussig-shunt-2">Blalock-Taussig shunt</a>)</p></li>
~~-<li>unilateral <a href="/articles/pulmonary-embolism">pulmonary embolism</a>~~
~~-</li>~~
~~-<li><a href="/articles/unilateral-hypoplasia-of-pulmonary-artery">unilateral hypoplasia of pulmonary artery</a></li>~~
~~-<li><a href="/articles/swyer-james-syndrome">Swyer-James syndrome</a></li>~~
~~-<li>unilateral <a href="/articles/pulmonary-emphysema">emphysema</a>/<a href="/articles/pulmonary-bullae">bullae</a>~~
~~-</li>~~
~~-</ul><h4>See also</h4><ul><li><a href="/articles/pulmonary-oedema">pulmonary oedema</a></li></ul>~~
+<li><p>unilateral <a href="/articles/pulmonary-embolism">pulmonary embolism</a></p></li>
+<li><p><a href="/articles/unilateral-hypoplasia-of-pulmonary-artery">unilateral hypoplasia of pulmonary artery</a></p></li>
+<li><p><a href="/articles/swyer-james-syndrome">Swyer-James syndrome</a></p></li>
+<li><p>unilateral <a href="/articles/pulmonary-emphysema">emphysema</a>/<a href="/articles/pulmonary-bulla-1">bullae</a></p></li>
+</ul><h4>See also</h4><ul><li><p><a href="/articles/pulmonary-oedema">pulmonary oedema</a></p></li></ul>

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Unilateral pulmonary edema

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Pathology

Aetiology

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