Article Figures & Data
Figures
- FIG 1.
Structure of the EmboTrap II device. Three different angles of the EmboTrap II device (the second is rotated 90° and third is rotated 45° further). Courtesy of Cerenovus, part of DePuy Synthes Products, Inc.
- FIG 2.
Distribution of sites of vessel occlusion treated. Most occlusions were in M1 (54.3%), followed by the ICA (25.7%), followed by M2 (15.7%) and M3 (2.9%). AcomA indicates anterior communicating artery; PcomA, posterior communicating artery; PCA, posterior cerebral artery; ACA, anterior cerebral artery.
- FIG 3.
Angiographic runs of a patient case. A, Preoperative angiogram shows M2 occlusion. B, EmboTrap II deployed across the occlusion. C, Angiogram run after EmboTrap II deployment. D, Angiographic run after EmboTrap II removal.
Tables
Characteristics n = 70 Mean age (range) (yr) 69.9 [SD, 16.5] (25–96) Women (%) 48.6 Race (%) White 61.7 Hispanic 28.3 Black 6.7 Other 3.3 Atrial fibrillation (%) 56.9 Hypertension (%) 80.3 Hyperlipidemia (%) 52.4 Diabetes (%) 32.8 Previous ischemic stroke/TIA (%) 20 Mean NIHSS on admission (range) 16.3 [SD, 6.6] (3–27) Mean premorbid mRS (range) 0.4 [SD, 0.9] (0–4) Premorbid mRS ≤2 (%) 94.0 Location ICA (%) 25.7 M1 (%) 54.3 M2 (%) 15.7 M3 (%) 2.9 Basilar (%) 1.4 IV tPA (%) 34.3 Variables n = 70 Anesthesia type (%) Conscious sedation 63.2 General anesthesia 36.8 Balloon-guide catheter used (%) 38.6 Intracranial stent (%) 5.7 Intra-arterial tPA (%) 7.1 Mean No. of passes per treatment (range) 2.5 [SD, 1.8] (1–7) Mean LKN to puncture time (min) 444.7 [SD, 310.4] Mean puncture to reperfusion (min) 54.2 [SD, 36.0] Mean LKN to reperfusion time (min) 480.1 [SD, 320.1] Mean No. of passes per treatment (range) 2.5 [SD, 1.8] (1–7) Mean No. of passes per treatment with EmboTrap II as definitive device (%) 2.2 [SD, 1.6] (1–7) Thrombectomy technique SRBG 37 (52.9%) Solumbra 18 (25.7%) EPIC 15 (21.4%) Definitive treatment with alternative device (%) 12.9 Note:—SRBG indicates stent retriever with balloon guide; EPIC, Embotrap pinning catheter.
Outcomes n = 70 Rate of final successful reperfusion (defined as TICI ≥ 2b reperfusion) (%) 95.7 TICI ≥ 2b rate with EmboTrap II as definitive device (%) 82.3 FPE (%) 35.7 Mean 24-hour NIHSS (range) 12.1 [SD, 7.6] (0–32) Mean NIHSS at day 5/7 or at discharge 10.5 [SD, 11.2] (0–42) Mean mRS at discharge 3.2 [SD, 1.7] (0–6) mRS 0–2 at discharge (%) 43.1 Mean mRS at 90 days 2.7 [SD, 2.2] (0–6) mRS 0–2 at 90 days (%) 52.9 Adverse Events Embolization to distal or a new territory (%) 15.7 Hemorrhagic conversion (%) 22.9 Symptomatic hemorrhagic conversion (%) 4.3 Mortality in follow-up period (%) 11.4 Present Study (n = 70) Valente et al9 (n = 29) ARISE II8 (n = 227) SWIFT PRIME4 (n = 98) TREVO 210 (n = 88) Stent retriever EmboTrap II EmboTrap II EmboTrap Solitaire Trevo Balloon-guide catheter used 39% 79% 74% NR NR Mean No. of passes without alternate-device rescue treatment 2.2 1.86 NR NR 2.4 Final reperfusion rate (TICI ≥ 2b) without alternative-device rescue treatment 82% 76% 80% 83% 68% FPE (TICI ≥ 2b) 36% 34% 52% NR NR 90-day mRS ≤ 2 53% 55% 67% 60% 40% Mean/median baseline NIHSS 16.3 18.5 15.8 17 18.3 Mean/median 24-hour NIHSS 10.5 NR NRa 8.5 12 Mean/median procedure time (min) 54 59 36 24b 48 sICH 4% 0 5% 0 7% Distal embolization 16% 0 7% NR 7%
