Table 1 Baseline characteristics of patients in the three years
From: Cumulative experience improves the procedures of mechanical thrombectomy
Total (n = 222) | 1st year (n = 50) | 2nd year (n = 68) | 3rd year (n = 104) | P | |
|---|---|---|---|---|---|
Age (years) | 70.9 ± 11.9 | 69.5 ± 11.4 | 70.8 ± 13.4 | 71.7 ± 11.2 | 0.557 |
Sex, male | 144 (64.9%) | 31 (62.0%) | 45 (66.2%) | 68 (65.4%) | 0.728 |
Medical history | |||||
Hypertension, n (%) | 163 (73.4%) | 36 (72.0%) | 46 (67.6%)) | 81 (77.9%)) | 0.308 |
Diabetes, n (%) | 42 (18.9%) | 5 (10.0%) | 17 (25.0%) | 20 (19.2%) | 0.305 |
Atrial fibrillation, n (%) | 113 (50.9%) | 26 (52.0%) | 30 (44.1%) | 57 (54.8%) | 0.555 |
Prior stroke, n (%) | 42 (18.9%) | 4 (8.0%) | 13 (19.1%) | 25 (24.0%) | 0.021 |
Laboratory examination | |||||
Platelet count, × 109/L | 175 (142–225) | 176 (142–251) | 175 (142–220) | 177 (144–215) | 0.604 |
INR, % | 1.0 ± 0.1 | 1.0 ± 0.1 | 1.1 ± 0.2 | 1.0 ± 0.1 | 0.087 |
Serum creatinine, μmol/L | 74 (61–93) | 77 (64–102) | 77 (63–96) | 69 (58–85) | 0.036 |
Glucose, mmol/L | 6.5 (5.4–7.7) | 6.3 (5.1–7.7) | 6.8 (5.2–7.6) | 6.5 (5.5–7.6) | 0.511 |
Baseline SBP, mmHg | 142 ± 21 | 145 ± 20 | 138 ± 23 | 144 ± 20 | 0.099 |
Baseline DBP, mmHg | 87 ± 15 | 87 ± 12 | 84 ± 15 | 88 ± 15 | 0.212 |
Baseline NIHSS score | 14 (11–19) | 15 (12–18) | 14 (9–18) | 15 (11–20) | 0.406 |
Infarct circulation | 0.417 | ||||
Anterior, n (%) | 180 (81.1%) | 42 (80.0%) | 56 (82.4%) | 82 (78.8%) | |
Posterior, n (%) | 42 (18.9%) | 8 (16%) | 12 (17.6%) | 22 (21.2%) | |
Stroke subtypes | 0.955 | ||||
LAA | 96 (43.2%) | 22 (44.0%) | 29 (42.6%) | 45 (43.3%) | |
CE | 108 (48.6%) | 24 (48.0%) | 33 (48.5%) | 51 (49.0%) | |
SOE | 2 (0.9%) | 1 (2.0%) | 1 (1.5%) | 0 (0%) | |
SUE | 16 (7.2%) | 3 (6.0%) | 5 (7.4%) | 8 (7.7%) | |
Onset to door time, min | 132 (65–217) | 91 (38–180) | 145 (65–206) | 149 (77–283) | 0.009 |
recruited beyond 6 h, n (%) | 21 (9.4%) | 1 (2%) | 2 (2.9%) | 18 (7.3%) | 0.001 |
Intravenous thrombolysis, n (%) | 114 (51.4%) | 28 (56.0%) | 44 (64.7%) | 42 (40.4%) | 0.021 |