Pulmonary arteriovenous aneurysm
(AV - Aneurysma):
- Vascular malformation producing a shunt (usually high flow) between the pulmonary artery and the pulmonary vein.
- High shunt volumes may lead to a hyperdynamic cardiac failure.
- Location mainly in the right lung.
Angiography of an arteriovenous lung aneurysm
Intraoperative situs of an arteiovenous lung aneurysm
- Cyanosis, clubbing of the fingers, polyglobulia.
- Right heart insufficiency.
- Angio - CT scan.
- Angiography of the pulmonary artery.
- Heart ultrasound (increased cardiac output; hypertrophic or dilated ventricles).
- ECG (hypertrophy).
Indication for operation:
- Clear indication for resection on an urgent basis.
- Thoracotomy, segmentectomy or lobectomy.
- Chest tubes may be removed if the lung is fully expanded and drainage volumes decrease below 20 to 50cc during a 24 hour period.
- Good if cardiac insufficiency is reversible