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Incidence, predictors, and outcomes of malignant cerebral edema in acute basilar artery occlusion after endovascular treatment: a secondary analysis of the ATTENTION trial.
Journal of Neurosurgery 2024 April 6
OBJECTIVE: Malignant cerebral edema (MCE) is a life-threatening complication of ischemic stroke. Few studies have evaluated MCE in patients with acute basilar artery occlusion (BAO) receiving endovascular treatment (EVT). Therefore, the authors investigated the incidence, predictors, and functional outcomes of MCE in BAO patients undergoing EVT.
METHODS: This was a post hoc analysis of the Endovascular Treatment for Acute Basilar Artery Occlusion (ATTENTION) trial, a prospective, randomized, multicenter clinical trial that compared endovascular treatment with conventional care of patients with BAO at 36 centers in China. Brain edema was retrospectively assessed using the Jauss score for all available follow-up scans, and patients with a Jauss score ≥ 4 were classified as having MCE. Clinical functional independence was defined as a modified Rankin Scale (mRS) score of 0-2, and a good outcome was defined as an mRS score of 0-3 at the 90-day follow-up. Univariate and multivariate analyses were used to explore the predictors of MCE and the impact of MCE on prognosis.
RESULTS: A total of 189 patients were analyzed, and 13.2% of patients developed MCE. Multivariate analysis showed that the baseline Glasgow Coma Scale (GCS) score (OR 0.722, 95% CI 0.548-0.950; p = 0.020) and the number of procedures (OR 1.594, 95% CI 1.051-2.419; p = 0.028) were significantly associated with MCE. After adjusting for confounding factors, the presence of MCE was significantly associated with a lower rate of functional independence (OR 0.115, 95% CI 0.023-0.563; p = 0.008), a lower rate of good outcome (OR 0.092, 95% CI 0.023-0.360; p = 0.001), and a higher rate of mortality (OR 5.373, 95% CI 2.055-14.052; p = 0.001) at the 90-day follow-up.
CONCLUSIONS: MCE is not uncommon in BAO patients undergoing EVT and is associated with poor outcomes. Baseline GCS score and the number of procedures were predictors of MCE. In clinical practice, it is crucial that physicians identifying MCE after EVT in patients with BAO and identification of MCE will help in the selection of an appropriate pharmacological treatment strategy and close monitoring.
METHODS: This was a post hoc analysis of the Endovascular Treatment for Acute Basilar Artery Occlusion (ATTENTION) trial, a prospective, randomized, multicenter clinical trial that compared endovascular treatment with conventional care of patients with BAO at 36 centers in China. Brain edema was retrospectively assessed using the Jauss score for all available follow-up scans, and patients with a Jauss score ≥ 4 were classified as having MCE. Clinical functional independence was defined as a modified Rankin Scale (mRS) score of 0-2, and a good outcome was defined as an mRS score of 0-3 at the 90-day follow-up. Univariate and multivariate analyses were used to explore the predictors of MCE and the impact of MCE on prognosis.
RESULTS: A total of 189 patients were analyzed, and 13.2% of patients developed MCE. Multivariate analysis showed that the baseline Glasgow Coma Scale (GCS) score (OR 0.722, 95% CI 0.548-0.950; p = 0.020) and the number of procedures (OR 1.594, 95% CI 1.051-2.419; p = 0.028) were significantly associated with MCE. After adjusting for confounding factors, the presence of MCE was significantly associated with a lower rate of functional independence (OR 0.115, 95% CI 0.023-0.563; p = 0.008), a lower rate of good outcome (OR 0.092, 95% CI 0.023-0.360; p = 0.001), and a higher rate of mortality (OR 5.373, 95% CI 2.055-14.052; p = 0.001) at the 90-day follow-up.
CONCLUSIONS: MCE is not uncommon in BAO patients undergoing EVT and is associated with poor outcomes. Baseline GCS score and the number of procedures were predictors of MCE. In clinical practice, it is crucial that physicians identifying MCE after EVT in patients with BAO and identification of MCE will help in the selection of an appropriate pharmacological treatment strategy and close monitoring.
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