Role of preoperative computed tomography angiographic anatomical considerations and their intraoperative interpretations in prediction of outcome in microsurgical clipping of ruptured anterior communicating aneurysm

Egyptian Journal of Neurosurgery

Table 3 Performance of CTA findings in prediction of postoperative morbidity among the studied patients

Findings	Sensitivity	Specificity	PPV	NPV	Accuracy	p
Closed A2 aneurysm angle	66.7	73.9	12	94.4	73.1	0.064
Neck extending to A2	50	65.2	15.8	90.9	63.5	0.656
Hypoplastic A1	16.7	15.2	2.5	58.3	15.4	0.001
Posterior projection	50	67.4	16.7	91.2	65.4	0.405