Ventricular inundation due to rupture of an intracranial aneurysm during carotid angiography.

A case of rupture of an aneurysm of the right middle cerebral artery with ventricular inundation of the contrast medium during angiography is reported. The various causal factors in the rupture of the aneurysmatic sack during this examination are discussed. In particular, the implications of sudden changes in arteriolar pressure induced by the contrast medium when preexistent arterioral and encephalic lesions of organic or functional nature are present, are considered.