Safety Evaluation and Flow Modification in the Anterior Cerebral Artery after Pipeline Embolization Device Deployment across the Internal Carotid Artery Terminus

Table 1

Baseline demographic data for all, group 1, and group 2 patients.

Characteristic	All	Group 1 ()	Group 2 ()	value
Sex				0.52
M (%)	17 (35%)	5 (29.4%)	12 (38.7%)
F (%)	31 (65%)	12 (71.0%)	19 (61.3%)
Mean age in yrs				0.26
Hypertension (%)	12 (25%)	6 (35.3%)	6 (19.4%)	0.30
Diabetes (%)	4 (8.3%)	2 (11.8%)	2 (6.5%)	0.52
Smoking (%)	14 (29.2%)	3 (17.6%)	11 (35.5%)	0.32
Aneurysm size (mm)				0.08
Aneurysms at the ICAb (%)	15 (31.3%)	8 (47.0%)	7 (22.5%)	0.08
Treatment				0.15
PED (%)	32 (62.7%)	13 (76.5%)	19 (55.9%)
PED+coil (%)	19 (37.3%)	4 (23.5%)	15 (44.1%)
Aneurysm occlusion				0.008
Complete obliteration (%)	31 (60.8%)	6 (35.3%)	25 (73.5%)
IAO (%)	20 (39.2%)	11 (64.7%)	9 (26.5%)
Fate of A1
Occlusion (%)	11 (22.9%)	—	11 (35.5%)
Diminished flow (%)	20 (41.7%)	—	20 (64.5%)
No flow change (%)	17 (35.4%)	17 (100%)	—
I-A1/I-ICA (mean (SD))	0.50 (0.12)	0.49 (0.11)	0.51 (0.12)	0.74
I-M1/I-ICA (mean (SD))	0.76 (0.12)	0.77 (0.12)	0.76 (0.12)	0.78
I-A1/I-M1 (mean (SD))	0.67 (0.19)	0.67 (0.22)	0.68 (0.17)	0.88
OR I-A1/C-A1 (mean (SD))	0.92 (0.24)	0.91 (0.19)	0.93 (0.27)	0.81
sPED/I-ICA (mean (SD))	1.11 (0.16)	1.19 (0.18)	1.06 (0.12)	0.006

yrs: years; M: male; F: female; ICAb: the internal carotid artery bifurcation; PED: pipeline embolization device; IAO: incomplete aneurysm occlusion; I-A1: ipsilateral-A1; I-ICA: ipsilateral internal carotid artery; SD: standard deviation; I-M1: ipsilateral-M1; OR: the odds ratio; C-A1: contralateral-A1; sPED: the PED size.