Abstract
Background
A common-stem origin of lenticulostriate arteries (CS-LSAs) is an anatomical variation that supplies a moderate to large section of the basal ganglia. We hypothesized that CS-LSAs with a patent orifice are located at distal positions of the acute-occluded middle cerebral artery (MCA) and that the blood flow of CS-LSAs is supplied by pail arterial anastomoses and results in hypoperfusion of CS-LSAs, similar to a deep watershed (DWS) infarction.
Objective
Our study evaluated the possibility of CS-LSAs in patients with DWS infarction and MCA occlusion and also assessed the safety of endovascular therapy (ET) in these patients.
Methods
A cohort of consecutive patients with DWS infarction and MCA occlusion and in whom full recanalization via ET was achieved were identified. Patients were divided into two groups based on the presence of CS-LSAs observed during ET. In addition, radiological and clinical data were retrospectively analyzed.
Results
Thirty-three patients were included, and CS-LSAs were observed in 48.5% (16/33) of patients. The possibility (72.2%, 13/18) of CS-LSAs was high in patients with DWS infarction companied with basal ganglia infarction. A good clinical outcome was similar in patients with CS-LSAs and basal ganglia infarction and in patients without CS-LSAs and basal ganglia infarction (69.2% vs. 81.8%, P = 0.649).
Conclusions
The possibility of CS-LSAs was 48.5% in patients with DWS infarction and MCA occlusion, and the revascularization procedure was safe and feasible in these patients despite the moderate-to-large basal ganglia infarction.
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Abbreviations
- LSAs:
-
Lenticulostriate arteries
- CS-LSAs:
-
Common-stem LSAs
- MCA:
-
Middle cerebral artery
- ICA:
-
Internal carotid artery
- ET:
-
Endovascular therapy
- DWS:
-
Deep watershed
- NIHSS:
-
National Institutes of Health Stroke Scale
- mRS:
-
Modified Rankin Scale
- FVH:
-
Fluid-attenuated inversion recovery vascular hyperintensities
- CWS:
-
Cortical watershed
- mTICI:
-
Modified Thrombolysis in Cerebral Infarction
- ACG:
-
American Society of Interventional and Therapeutic Neuroradiology collateral grading
- TOAST:
-
Trial of Org 10172 in Acute Stroke Treatment
- sICH:
-
Symptomatic intracranial hemorrhage
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Acknowledgments
We thank teams from American Journal Expert (https://secure.aje.com/cn/researcher/), for editing the English text of a draft of this manuscript.
Funding
This research received grant from Joint Funds for the innovation of science and Technology, Fujian province (Grant number: 2018J01207).
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Implication of patient care
1. There is a moderate chance of common-stem LSAs (CS-LSAs) in progressive ischemic stroke patients with deep watershed (DWS) infarction and middle cerebral artery (MCA) occlusion.
2. The mechanism of basal ganglia infarction was hypoperfusion in these types of patients.
3. The recanalization procedure was feasible in these patients.
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Chen, W.h., Yi, Ty., Zhan, Al. et al. Clinical significance of common-stem lenticulostriate arteries in patients with internal watershed infarction. Neurol Sci 40, 2303–2309 (2019). https://doi.org/10.1007/s10072-019-03953-w
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DOI: https://doi.org/10.1007/s10072-019-03953-w