The History of Endovascular Stroke Treatment: From Local Intraarterial Fibrinolysis to Stent Retriever Thrombectomy.

Buecke, Philipp; Cohen, José; Klisch, Joachim; Felber, Stephan; Bäzner, Hansjörg; Henkes, Hans (2024). The History of Endovascular Stroke Treatment: From Local Intraarterial Fibrinolysis to Stent Retriever Thrombectomy. RöFo. Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren, 196(7), pp. 682-689. Thieme 10.1055/a-2206-6223

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BACKGROUND

Acute thromboembolic occlusions of large intracranial arteries are associated with high rates of permanent disability and mortality. Intravenous thrombolysis (IVT) in these patients resulted in an inadequate rate of recanalization and has had limited clinical success. Various endovascular procedures have been attempted to remove intracranial thrombi and reopen occluded vessels. These technical innovations led to the publication of initial case reports, but the methods ultimately did not endure. Endovascular treatment of acute cerebral ischemia was performed only rarely and in selected centers as part of individualized curative attempts. The Solitaire stent was originally developed to treat intracranial aneurysms through stent-assisted coil occlusion. The suggestion that this stent could also be used for intracranial thrombectomy was made as early as 2003 and was clinically confirmed in 2008. Releasing a Solitaire stent into an embolically occluded large cerebral artery, with an incubation time of approximately 3 minutes and slow retraction of the stent, has led to unprecedented success rates of thrombus removal and (sub)total recanalization in more than 90 % of patients.

METHODS

This review article aimed to describe the steps in the development of endovascular stroke therapy, beginning with intra-arterial thrombolysis and early technical innovations leading to the eventual success of stent retriever thrombectomy.

CONCLUSION

The potential for mechanical recanalization of acutely occluded large cerebral arteries could not be fully exploited until the advent of stent retriever thrombectomy. The entire concept of stroke treatment fundamentally changed after complete and rapid recanalization first became possible. Randomized controlled trials have shown superiority of stent retriever thrombectomy over IVT. An unparalleled boom in endovascular stroke therapy followed.

KEY POINTS

· The history of endovascular stroke treatment was marked by setbacks in the first three decades.. · Stent retriever thrombectomy is the first procedure enabling recanalization of acute large intracranial artery occlusions in more than 90 % of patients.. · Stent retriever thrombectomy has transformed stroke care and neuroradiology in unprecedented ways.. · Further technical improvements will enable even faster, safer, complete recanalization in the near future.. · Further improvements in clinical outcomes will probably be determined by aspects beyond endovascular methods alone..

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