Suggested stroke intervention time intervals
| Time interval variable | Definition |
|---|---|
| Onset to door | Time from last known well to ED registration |
| Door to imaging | Time from ED arrival to start of NCCT head imaging used for treatment selection |
| Imaging to endovascular team activation | Time from start of NCCT head to activation (contacting) the endovascular team |
| Endovascular team activation to arrival to angiosuite | |
| Imaging to angiosuite | Time from start of NCCT head imaging to angiosuite room entry |
| Angiosuite entry to puncture | Time from room entry to arterial puncture |
| Puncture to baseline angiogram | Puncture to placing the main catheter/sheath in the base vessel (carotid or vertebral) |
| Puncture to clot | Time from arterial puncture to first access of the clot by microcatheter |
| Clot to substantial perfusion | Time from first access of the clot by microcatheter to first achievement of persistent TICI 2b or better reperfusion |
| Clot to end of procedure | Time from first access of the clot by microcatheter to final angiogram |
ED, emergency department; NCCT, non-contrast CT; TICI, Thrombolysis in Cerebral Ischemia.