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Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
Published on: April 23, 2021
Neurological soft signs as the stroke risk in sickle cell disease
Ismet Melek1, Ferit Akgul, Taskin Duman
1Department of Neurology, Faculty of Medicine, Mustafa Kemal University, Nöroloji ABD. 31100, Antakya, Turkey. ismetmelek@yahoo.com
Insights
Neurological soft signs (NSS) are elevated in sickle cell disease (SCD) patients with silent cerebral infarction. High NSS scores may help identify SCD patients at increased risk for stroke.
Area of Science:
- Neurology
- Hematology
- Radiology
Background:
- Sickle cell disease (SCD) is a prevalent hemoglobinopathy.
- Silent cerebral infarction (SCI) in SCD patients is a known risk factor for clinical stroke.
- Neurological soft signs (NSS) reflect subtle sensorimotor and coordination deficits.
Purpose of the Study:
- To investigate the impact of SCI on NSS in SCD patients.
- To evaluate NSS as a potential clinical tool for stroke risk stratification in SCD.
Main Methods:
- Cerebral MRI was used to identify SCI in 59 SCD patients and 28 controls.
- NSS were assessed in all participants.
- Comparison of NSS scores between SCD patients with and without SCI, and healthy controls.
Main Results:
- SCD patients with SCI exhibited significantly higher NSS scores compared to those without SCI and controls (p < 0.05).
- No significant difference in NSS scores was observed between SCD patients without SCI and healthy controls.
- Elevated NSS scores are indicative of SCI in SCD.
Conclusions:
- High NSS scores are a significant finding for diagnosing SCI in SCD.
- NSS can provide valuable additional information for identifying stroke risk in SCD patients with SCI.
Abstract:
Sickle cell disease (SCD) is a common form of hemoglobinopathy and is highly prevalent worldwide. Silent cerebral infarction, which represents infarction without clinical signs, is a risk factor for clinical stroke in patients with SCD. It is well known that silent infarction predisposes patients with SCD to overt stroke. The aim of the present study is to investigate the effect of silent infarction on neurological soft signs (NSS), which demonstrate subtle impairments in sensory integration, motor coordination and the sequencing of complex motor acts and to evaluate whether NSS can be used in clinical practice to evaluate the patients at risk of stroke in SCD patients with silent infarction. Fifty-nine SCD patients without any documented history of cerebrovascular accident and 28 healthy controls were included in this study. All the patients with SCD were evaluated with cerebral magnetic resonance imaging. We found that the NSS scores were significantly higher in patients with silent cerebral infarction than those in patients without silent infarction and control subjects (p < 0.05). Importantly, there was no significant difference in the NSS scores between the patients without silent infarction and control subjects. These results indicate that high NSS scores represnt an important finding for diagnosis of silent infarction in SCD patients. As silent infarction increases the risk for stroke in patients with SCD, NSS can be used to provide additional information in diagnosis of the patients with possible stroke risk during the course of SCD.
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