Increased use of mechanical thrombectomy was associated with peaks in the incidence of embolic large vessel occlusion (eLVO) during spring and early autumn, potentially explainable by current rising temperatures and/or colder overall temperatures.
Why this matters
Seasonal variation in stroke incidence has been investigated at length; however, results have been inconsistent, with peaks (or no peaks at all) reported in all four seasons.
Embolic strokes including eLVO regularly require endovascular thrombolysis via mechanical thrombectomy.
The presence of seasonal patterns in the incidence of eLVO is unclear. However, annual peaks and troughs in eLVO could put hospitals through periods of additional strain due to the personal and technical resourcing and the time-consuming nature of mechanical thrombectomy.