Table 2

EVT-related outcomes

Repeated imaging (n=165)No repeated imaging (n=386)P value
Groin puncture – no./total (%)75/165 (45%)326/386 (84%)<0.01
 Persistent LVO, ≥1 MT attempt(s)57/165 (35%)261/386 (68%)<0.01
 Persistent LVO, no access to occlusion location12/165 (7%)35/386 (9%)0.49
 LVO resolved, angiography only*6/165 (4%)29/386 (8%)0.09
Subgroup: patients who underwent groin puncture
Repeated imaging (n=75) No repeated imaging (n=326) Unadjusted β (95% CI) Adjusted β (95% CI)
CSC door-to-groin time§ – median (IQR)43 (35 to 59)27 (19 to 37)19.9 (14.7 to 25.1)20.0 (14.8 to 25.3)†
PSC door-to-groin time¶ – median (IQR)147 (118 to 190)124 (104 to 154)22.6 (9.6 to 35.6)26.9 (14.2 to 39.6)‡
Onset-to-groin time** – median (IQR)198 (167 to 261)195 (156 to 249)11.1 (-9.6 to 31.9)15.0 (-6.0 to 35.9)‡
  • *Among patients who underwent a cerebral angiography only, one periprocedural complication was reported (femoral pseudoaneurysm, in the repeated imaging group).

  • †Adjusted for: age, previous stroke, NIHSS score, location of occlusion on first CTA, presentation outside office hours.

  • ‡Adjusted for: age, previous stroke, NIHSS score, location of occlusion on first CTA, presentation outside office hours, treatment with intravenous thrombolysis.

  • §Number of missing values: 27.

  • ¶55.

  • **17.

  • CSC, comprehensive stroke center; CTA, CT angiography; EVT, endovascular treatment; LVO, large vessel occlusion; MT, mechanical thrombectomy; NIHSS, National Institutes of Health Stroke Scale; no., number; PSC, primary stroke center.