Outcomes of Endovascular Treatment for Posterior Circulation Stroke According to the Underlying Pathologic Mechanism: A Retrospective Single-Center Analysis
Table 1
Baseline characteristics of all subjects.
All patients ()
Embolism group ()
Intrinsic group ()
value
Age (yr)
0.09
Gender (male)
78 (72.2)
40 (69.0)
38 (76.0)
0.51
Risk factor
Atrial fibrillation
37 (34.3)
33 (56.9)
4 (8.0)
<0.001
Hypertension
81 (75.0)
37 (63.8)
44 (88.0)
0.004
Diabetes mellitus
18 (16.7)
10 (17.2)
8 (16.0)
1.0
Dyslipidemia
10 (9.3)
3 (5.2)
7 (14.0)
0.18
Prior stroke
7 (6.5)
2 (3.4)
5 (10.0)
0.24
Smoking
30 (27.8)
13 (22.4)
17 (34.0)
0.20
Valvular heart disease
5 (4.6)
4 (6.9)
1 (2.0)
0.37
Anticoagulant drug
11 (10.2)
9 (15.5)
2 (4.0)
0.06
Antiplatelet drug
10 (9.3)
3 (5.2)
7 (14.0)
0.18
Intravenous thrombolysis
10 (9.3)
6 (10.3)
4 (8.0)
0.74
Systolic pressure (mmHg)
0.85
Fast glucose (mmol/L)
0.05
LDL (mmol/L)
0.17
Occlusion sites
Basilar artery
87 (80.6)
46 (79.3)
41 (82.0)
<0.001
Proximal segment
30 (27.8)
5 (8.6)
25 (50.0)
NA
Middle segment
17 (15.7)
6 (10.3)
11 (22.0)
NA
Distal segment
40 (37.0)
35 (60.3)
5 (10.0)
NA
Vertebral artery
10 (9.3)
2 (3.4)
8 (16.0)
0.04
Posterior cerebral artery
11 (10.2)
10 (17.2)
1 (2.0)
0.009
Baseline NIHSS score
0.65
Pc-ASPECTS, median (IQR)
9 (8-10)
9 (8-10)
9 (7-10)
0.59
Pc-CS classification
0.25
≥ 3
50 (46.3)
30 (51.7)
20 (40.0)
< 3
58 (53.7)
28 (48.3)
30 (60.0)
Time to procedure (min)
0.004
Procedure time (min)
<0.001
Onset to recanalization (min)
<0.001
Procedural characteristics
General anesthesia
15 (13.9)
6 (10.3)
9 (18.0)
0.27
Retrieval times, median (IQR)
1 (1-2)
1 (1-2)
1 (1-2)
0.82
Aspiration
53 (49.1)
40 (69.0)
13 (26.0)
<0.001
Stent retrieval
54 (50)
28 (48.3)
26 (52.0)
0.84
Stent angioplasty
32 (29.6)
7 (12.1)
25 (50.0)
<0.001
Balloon angioplasty
29 (26.9)
3 (5.2)
26 (52.0)
<0.001
Intra-arterial or/and venous tirofiban
59 (54.6)
16 (27.6)
43 (86.0)
<0.001
IQR: interquartile; NIHSS: National Institute of Health Stroke Scale; Pc-ASPECTS: posterior circulation Alberta Stroke Program Early CT Score; Pc-CS: posterior circulation collateral score.
