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[Relation of the changes in hemorheologic indices and the site and size of cerebral infarction]
Insights
This study differentiates cerebral infarction causes, finding higher hematocrit (HCT) and blood viscosity in large cerebral infarctions, and higher platelet aggregation in small ones, suggesting distinct treatment approaches.
Area of Science:
- Neurology
- Vascular Biology
- Medical Imaging
Background:
- Cerebral infarction, a leading cause of disability, presents diverse pathophysiological mechanisms.
- Understanding the differences between large and small cerebral infarctions is crucial for effective treatment.
Purpose of the Study:
- To investigate the distinct pathophysiological factors contributing to large versus small cerebral infarctions.
- To correlate specific blood parameters with different types of cerebral infarction.
Main Methods:
- Computed tomography (CT) scans were used to classify 83 cerebral infarction cases into two groups: main cerebral artery trunk occlusion and penetrating artery occlusion.
- Hematocrit (HCT), whole blood viscosity, and platelet aggregation rates were measured and compared between the two groups.
Main Results:
- Cases with cerebral arterial main trunk occlusion (larger infarctions) exhibited higher HCT and whole blood viscosity.
- Cases with penetrating artery occlusion (smaller infarctions) showed a higher rate of platelet aggregation.
- Blood viscosity demonstrated a positive correlation with the size of cerebral infarction in the main trunk occlusion group.
Conclusions:
- Pathophysiology of large cerebral cortex/subcortex infarctions differs from small deep cerebral structure infarctions.
- Reducing HCT and blood viscosity is recommended for treating larger cerebral infarctions.
- Lowering platelet aggregation rates may benefit patients with small deep cerebral structure infarctions.
Abstract:
According to the CT findings, 83 cases of cerebral infarction were divided into two groups. One group consisted of cases with occlusion of the cerebral arterial main trunks and the other of those with occlusion of the penetrating arteries. The HCT and the whole blood viscosity were higher in the former group, whereas the rate of platelet aggregation was higher in the latter group. These results suggested that the physiopathology involved in the formation of the large cerebral infarction in the cerebral cortex and subcortex was different from that of the small infarction in the deep cerebral structures. Besides, it was found that the blood viscosity has positive relationship with the size of the cerebral infarction in the former group. It was presumed that the HCT and the blood viscosity should be reduced immediately for treating the larger cerebral infarction, but to lower the rate of platelet aggregation for treating the small infarction in the deep cerebral structures would be of benefit.