Procedural details/outcome | BFP (n=136) | 1 pass (n=69) | P value* | 2 passes (n=70) | ≥3 passes (n=66) | P value† |
Onset to groin (min) (mean±SD) | 290.75 (147.64) | 331.77 (178.23) | 0.083 | 280 (106.36) | 302.56 (181.64) | 0.159 |
Groin to revascularization (min) (mean±SD) | 73.63 (39.78) | 37.75 (23.3) | <0.001 | 60.09 (30.57) | 89.82 (43.56) | <0.001 |
Onset to revascularization (hours) (mean±SD) | 5.96 (2.51) | 6.11 (2.93) | 0.695 | 5.63 (1.87) | 6.31 (3.01) | 0.297 |
mTICI score (n (%)) | ||||||
mTICI 0 | 13 (10) | 5 (7) | 0.048 | 3 (4) | 10 (15) | 0.029 |
mTICI 1 | 8 (6) | 0 (0) | 4 (6) | 4 (6) | ||
mTICI 2a | 15 (11) | 4 (6) | 5 (7) | 10 (15) | ||
mTICI 2b | 39 (29) | 15 (22) | 21 (30) | 18 (27) | ||
mTICI 2c | 23 (17) | 13 (19) | 14 (20) | 9 (14) | ||
mTICI 3 | 38 (28) | 32 (46) | 23 (33) | 15 (23) | ||
Stent retriever length (mm)‡ (mean±SD) | 24.63 (7.69) | 24.29 (7.35) | 0.776 | 23.99 (7.50) | 25.30 (7.89) | 0.579 |
No revascularization (n (%)) | 36 (26) | 9 (13) | 0.028 | 12 (17) | 24 (36) | 0.002 |
Revascularization§ (n (%)) | 100 (74) | 60 (87) | 58 (83) | 42 (64) | ||
Mortality mRS at 90 days (n (%)) | 38 (28) | 8 (12) | 0.008 | 18 (26) | 20 (30) | 0.024 |
MRS 0–2 (good) | 49 (36) | 37 (54) | 0.016 | 30 (43) | 19 (29) | 0.014 |
MRS 3–6 (poor) | 87 (64) | 32 (46) | 40 (57) | 47 (71) |
Continuous variables presented as mean ±SD; categorical/binary variables presented as n (%).
*P value < 0.05 considered statistically significant. P values refer to a comparison of beyond-first past patients (2 or more thrombectomy passes) versus those with only 1 thrombectomy pass.
†P values refer to a comparison of patients undergoing 1 pass versus 2 passes versus ≥3 passes.
‡Stent retriever length refers to mean initial stent retriever length.
§Revascularization refers to patients achieving revascularization (mTICI grades of 2B, 2C, or 3).
mRS, modified Rankin Scale; mTICI, modified Thrombolysis inCerebral Ischemia score; BFP, beyond the-first pass.