Upper lobe pulmonary venous diversion
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Upper lobe pulmonary venous diversion (cephalisation) reflects elevation of left atrial pressure and can occur with pulmonary oedema. It produces Stag-antler's sign on frontal chest x-ray.
The normal left atrial pressure is 5-10 mmHg. An elevation of left atrial pressure to 10-15 mmHg will result in cephalisation. Possible causes for cephalisation include 2:
- left heart failure (most common)
- mitral valve disease
- shunt
The comparison vessels should be of equity distance from the hilar point.
-<p><strong>Upper lobe pulmonary venous diversion (cephalisation)</strong> reflects elevation of left atrial pressure and can occur with <a href="/articles/pulmonary-oedema">pulmonary oedema</a>.</p><p>The normal left atrial pressure is 5-10 mmHg. An elevation of left atrial pressure to 10-15 mmHg will result in cephalisation. Possible causes for cephalisation include <sup>2</sup>:</p><ul>- +<p><strong>Upper lobe pulmonary venous diversion (cephalisation)</strong> reflects elevation of left atrial pressure and can occur with <a href="/articles/pulmonary-oedema">pulmonary oedema</a>. It produces <a href="/articles/stag-antlers-sign">Stag-antler's sign</a> on frontal chest x-ray.</p><p>The normal left atrial pressure is 5-10 mmHg. An elevation of left atrial pressure to 10-15 mmHg will result in cephalisation. Possible causes for cephalisation include <sup>2</sup>:</p><ul>
-</ul><p>The comparison vessels should be of equity distance from the <a title="hilar point" href="/articles/hilar-point">hilar point</a>. </p>- +</ul><p>The comparison vessels should be of equity distance from the <a href="/articles/hilar-point">hilar point</a>. </p>
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