A Standardized Aspiration-First Approach for Thrombectomy to Increase Speed and Improve Recanalization Rates

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FIGURE.
Type of device and the influence of total number of passes in percentages, P < .05

Table 1:

Baseline characteristics

Variable/Sts	All (n = 254)	Aspiration (n = 127)	Stent Retriever (n = 127)	P Value
Age
Mean	69.1 ± 15.6	70.4 ± 14.8	67.9 ± 16.4	.275
Median (IQR 25%–75%)	73.0 (62–80)	74.0 (63–80)	71.0 (58–79)
NIHSS score
Mean	15.7 ± 6.3	15.6 ± 6.7	15.7 ± 5.9	.844
Median (IQR 25%–75%)	16.0 (1–20)	15.0 (10–20)	16.0 (12–20)
Thrombolysis (No.) (%)	132 (52.2%)	64 (50.4%)	68 (53.5%)	.662
Occlusion location (No.) (%)
MCA, M1	176 (69%)	93 (73%)	83 (65%)	.292
MCA, M2	32 (12.6%)	12 (9%)	20 (15.7%)
ICA, T/L	46 (18%)	22 (17%)	24 (18.8%)
mRS 0–2 at 90 days (No.) (%)	121 (48%)	63 (50%)	58 (46%)	.53

Table 2:

Time variables—aspiration vs stent retriever

Variable/Sts	All (n = 254)	Aspiration (n = 127)	Stent Retriever (n = 127)	P Value
Length of procedure (min)
Mean	47.7 ± 38.9	33.2 ± 25.1	62.2 ± 44.6	<.001
Median (IQR 25%–75%)	36.0 (22–62)	26.0 (15–41)	47.0 (32–80)
Groin puncture to 1st angiogram (min)
Mean	7.3 ± 5.9	7.7 ± 5.9	7.0 ± 5.8	.234
Median (IQR 25%–75%) (min)	6.0 (4–9)	6.0 (4–10)	5.0 (4–9)
First angiogram to first 1st reperfusion (min)
Mean	23.0 ± 25.8	18.2 ± 22.9	27.9 ± 27.6	<.001
Median (IQR 25%–75%)	15.0 (8–27)	11.0 (7–20)	19.5 (12–32)
Groin puncture to 1st reperfusion (min)
Mean	30.2 ± 27.1	25.6 ± 23.8	34.9 ± 29.4	<.001
Median (IQR 25%–75%)	22.0 (15–35)	18.0 (13–31)	26.0 (17–39)
TICI (No.) (%)
¥ 2b–3	231 (90.9%)	122 (96.1%)	109 (85.8%)	<.005
2c–3	176 (69.3%)	99 (78%)	77 (60.6%)	<.005
3	109 (43%)	59 (46%)	50 (39%)	.25
First-pass 3	48 (19%)	32 (25%)	16 (13%)	.01

Note:—¥ indicates TICI as standing for Thrombolysis in Cerebral Infarction Score; Sts, statistics; TICI, Thrombolysis in Cerebral Infarction Score.