Oct, 2022 - By SMI
There hasn't been much research done on the effects and dangers of endovascular thrombectomy six to twenty-four hours following the beginning of a stroke caused by basilar-artery obstruction.
In a study carried out in China over a five-year period, we randomly allocated, in a 1:1 ratio, patients with basilar-artery stroke who presented between six and twenty-four hours following the beginning of symptoms to receive either medical therapy with thrombectomy or medical therapy alone. The initial primary objective was altered to a good functional status at 90 days. The original primary outcome was a score of 0 to 4 on the Rankin scale (range, 0 to 6); a score of 0 indicates no disability, 4 indicates a moderately severe disability, and 6 indicates death. Symptomatic cerebral bleeding at 24 hours and 90-day death were the main safety outcomes.
The analysis involved 217 patients in total (110 in the thrombectomy group and 107 in the control group); randomization took place, on average, 663 minutes after the beginning of symptoms. Because thrombectomy was superior, enrollment was stopped at a predetermined intermediate analysis. In the thrombectomy group, 14% of patients and in the control group, 21% of patients, thrombolysis was employed. 51 patients (46%) in the thrombectomy category and 26 patients (24%) in the control group had a behavior Rating scale score of 0 to 3. Results were 55% and 43%, respectively, for the first main outcome on a modified Rankin scale with a score range of 0 to 4. 6 of 102 patients (6%) in the thrombectomy category and 1 of 88 patients (1%), in the control group, experienced symptomatic cerebral hemorrhage.
Thrombectomy produced a higher percentage of patients with good functional status at 90 days than medical therapy did in patients with basilar-artery occlusion-related stroke who presented 6 to 24 hours after the onset of symptoms, but it was linked to more cerebral haemorrhages and procedural complications.
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