Association of Osmotic Drugs With Clinical Outcomes in Acute Large Hemispheric Infarction

Overview

Stroke remains the second leading cause of death worldwide, with 2%-8% of these being large hemispheric infarction (LHI) with an occupying effect and the worst prognosis. Even with medical and surgical treatment, the mortality of LHI with cerebral edema is as high as 20% to 30%. Current guidelines recommend supportive supervision, osmotic drugs, and decompressive hemicraniectomy (DHC) for the treatment of LHI, but not all patients with LHI are suitable for DHC, and not all of them can afford the high cost of DHC. In the real-world, the use of osmotic drugs is more common than DHC. The guideline recommends using mannitol or hypertonic saline to reduce cerebral edema and tissue displacement in patients with cerebral edema. Mannitol is the most widely used and longest-standing osmotic drug, and since 1965, hypertonic saline has been used to treat intracranial hypertension. Most of the previous studies compare the efficacy of DHC over medical therapy or compare the efficacy of mannitol with hypertonic saline, but there is an absence of clinical data on whether osmotic drug therapy can improve the clinical prognosis of patients with large hemispheric infarction at 90 days or even longer. Therefore, the purpose of this study was to investigate the association between the osmotic drug and clinical outcomes in large hemispheric infarction, with the aim of informing clinical decisions.

Diagnostic criteria for large hemispheric infarction (LHI): CT within 6 hours of onset showing hypointense areas \> 1/3 of the middle cerebral artery territory, or hypointense areas \> 50% of the middle cerebral artery territory within 6 hours to 72h of onset. LHI is strongly associated with severe cerebral edema, which can occur to varying degrees cerebral edema within hours or days of LHI. In recent years, endovascular treatment has significantly improved the revascularization of patients with large vessel occlusive cerebral infarction and reduced the incidence of malignant progression and mortality in patients with acute LHI, but many patients still suffer from malignant brain edema (MBE), which leads to the worsening of the disease.

Conditions