Table 2

Suggested stroke intervention time intervals

Time interval variableDefinition
Onset to doorTime from last known well to ED registration
Door to imagingTime from ED arrival to start of NCCT head imaging used for treatment selection
Imaging to endovascular team activationTime from start of NCCT head to activation (contacting) the endovascular team
Endovascular team activation to arrival to angiosuite
 Imaging to angiosuiteTime from start of NCCT head imaging to angiosuite room entry
 Angiosuite entry to punctureTime from room entry to arterial puncture
 Puncture to baseline angiogramPuncture to placing the main catheter/sheath in the base vessel (carotid or vertebral)
 Puncture to clotTime from arterial puncture to first access of the clot by microcatheter
 Clot to substantial perfusionTime from first access of the clot by microcatheter to first achievement of persistent TICI 2b or better reperfusion
 Clot to end of procedureTime from first access of the clot by microcatheter to final angiogram
  • ED, emergency department; NCCT, non-contrast CT; TICI, Thrombolysis in Cerebral Ischemia.