Neurobehavioral sequelae of SAH without a proven source of the bleeding in comparison to the sequelae of the rupture of an intracranial aneurysm
In 15–22% of all cases of non-traumatic spontaneous SAH a source of the bleeding cannot be identified even after repeated angiography (Cioffi et al., 1989; Alexander, Dias and Uttley, 1986; Spallone et al., 1986; Brismar and Sundbârg, 1985; Eskesen et al., 1984; Nishioka et al, 1984). Ferbert, Hubo and Biniek (1992) found in 38 of 91 patients after spontaneous nontraumatic SAH without a proven source of the bleeding (NA-SAH) a preponderant or exclusive distribution of blood in the prepontine and/or interpeduncular cistern. Ruelle et al. (1985) reported on an essentially more favorable course in 49 NA-SAH patients in comparison to patients after aneurysm rupture. Clinically relevant, angiographically proven vasospasm only occurred in 24.5% of the NA-SAH patients. Upon discharge only one patient presented with a hemiparesis and an aphasia (Ruelle et al., 1985). At follow-up 1–15 (median 8) years later, 94% of the patients were able to work to the same extent as before the hemorrhage.
KeywordsStandard Deviation Cognitive Deficit Intracranial Aneurysm Divided Attention Aneurysm Rupture
Unable to display preview. Download preview PDF.