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Published on: January 18, 2018
Intra-arterial Thrombolysis for Acute Retinal Ischemia: A Retrospective, Observational, Cohort Study
1Department of Biomedical Engineering, School of Biological Science and Medical Engineering (YG, XJ), Beijing Advanced Innovation Center for Big Data-Based Precision Medicine, Beihang University, Beijing, China; Department of Neurology (WF, BM), Duke University Medical Center, Durham, North Carolina; Departments of Ophthalmology (YG, XZ), Neurology (WZ, WG, XJ), Beijing Key Laboratory of Hypoxic Conditioning Translational Medicine (WZ), China-America Institute of Neuroscience (DW), Xuanwu Hospital, Capital Medical University, Beijing, China; Beijing Institute for Brain Disorders (WZ, XJ), Capital Medical University, Beijing, China; and Department of Ophthalmology (DZ, XS), Beijing Luhe Hospital, Capital Medical University, Beijing, China.
Background:
To determine whether intra-arterial thrombolysis (IAT) within 16 hours after the onset of symptoms is feasible and associated with better visual outcomes in patients with acute retinal ischemia (ARI).
Methods:
The retrospective cohort study was performed from January 2014 to December 2021 in the Xuanwu Hospital of Capital Medical University. Patients with ARI who initially presented visual acuity of 20/100 or worse were screened in the study. Visual end points were evaluated at one week and at final visit after treatment. Serious adverse events were recorded during operation and within 1 week after IAT treatment.
Results:
The amount of clinically significant visual improvement (≥0.3 logarithm of the minimum angle of resolution) in the IAT group was significantly higher than that in the conservative treatment group at one week after the treatment (47.8% vs 16.7%; P = 0.014) and at final visit (52.2% vs 20%; P = 0.014). After controlling confounding factors, ARI treatment was the only factor significantly associated with the amount of clinically significant visual improvement (OR, 4.364; 95 CI, 1.298-14.667; P = 0.017). A patient (4.3%) experienced retinal hemorrhage without symptom within 1 week after IAT treatment. No patients experienced new symptomatic cerebral infarction, intracranial hemorrhage, TIA, artery dissection, vascular perforation, and distal embolization during operation and within 1 week after IAT treatment.
Conclusions:
IAT may be associated with better visual improvement within 16 hours after the onset of symptoms. Besides, IAT is feasible and associated with a low risk of periprocedural complications for ARI. This study will aid in feasibility testing and sample size calculations in advance of future, fully-powered efficacy studies for ARI.
