title: The value of intraoperative angiography in surgery of intracranial aneurysms: a prospective study in 126 patients.
abstract: The value of intraoperative digital subtraction angiography in surgery for intracranial aneurysms, the benefits and cost-effectiveness are a matter of discussion. We prospectively studied 126 patients with 144 aneurysms, most on the anterior intracranial circulation, who underwent clipping and intraoperative angiography. Follow-up was 28.4 +/- 13.1 months. We tried to work out the indications for intraoperative angiography of the anterior circulation and its cost-effectiveness. In 10.3 % of patients (9 % per aneurysm) unexpected findings were shown by intraoperative angiography: inadequately clipped aneurysms in 10 (7.9 %), a completely unclipped aneurysm in one (0.8 %) and occluded major arteries in two (1.6 %). A broad neck was a variable of statistical significance for inadequate clipping or stenosis or occlusion of an adjacent vessel. There was a strong trend for aneurysms more than 15 mm in diameter to be "risky". Their site was not a predictive factor. We believe that intraoperative angiography is indicated in surgery not only on large and giant aneurysms, but also broad-based aneurysms of the anterior cerebral circulation regardless of their size. It is cost-effective compared to postoperative angiography. The rate of stroke in our hands was 0.8%.
authors.affiliation: Department of Neurosurgery, Landeskrankenhaus Feldkirch, Austria. dr.a.popadic@aon.at
authors.forename: A
authors.initials: A
authors.lastname: Popadić
authors.forename: A
authors.initials: A
authors.lastname: Witzmann
authors.forename: T
authors.initials: T
authors.lastname: Amann
authors.forename: W
authors.initials: W
authors.lastname: Doringer
authors.forename: M
authors.initials: M
authors.lastname: Fleisch
authors.forename: C
authors.initials: C
authors.lastname: Häfel
authors.forename: K
authors.initials: K
authors.lastname: Hergan
authors.forename: M
authors.initials: M
authors.lastname: Längle
mesh_terms: D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction / Q000191:economics* / Q000379:methods; D003362:Cost-Benefit Analysis; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012307:Risk Factors; D013525:Surgical Instruments