• Igor Nikolic, Goran Tasic, Vojislav Bogosavljevic, Branislav Nestorovic, Vladimir Jovanovic, Zvezdana Kojic, Igor Djoric, and Branko Djurovic.
• Neurosurgical Clinic, Clinical Center of Serbia, Belgrade, Serbia. i.m.nikolic@gmail.com
• Turk Neurosurg. 2012 Jan 1; 22 (4): 420-6.

AimIntracranial aneurysm rupture is followed by high mortality and morbidity. In order to understand the aneurysm's natural course, it is necessary to recognize the predisposing factors for the rupture.Material And MethodsAnalysis included 142 operated aneurysms (94 hemorrhaging and 48 unruptured) in the period from 2008 to 2010.ResultsThe ratio between the width of the aneurysm neck and diameter of the carrying blood vessel - artery in ruptured aneurysms (OR) was 1.58 ± 0.61, and in unruptured aneurysms 1.14 ± 0.52 (p < 0.01). Aspect ratio of ruptured aneurysm was 1.89 ± 0.59, and in unruptured 1:33 ± 0.17. The angle of inclination of ruptured aneurysms was 139.22 ± 21.53, while in unruptured aneurysms it was 101.73 ± 21.26.ConclusionBased on the results of our research, a predictive model of morphometric characteristics of the vessel bearing the aneurysm to rupture can be identified: an irregular shape of the aneurysm, AR > 1.6, OR > 1.5 and inclination angle > 135 deg.

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