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Increased risk of posterior circulation infarcts among ischemic stroke patients with cervical spondylosis
Chih-Chi Chen1, Chia-Ying Chung1, Tsong-Hai Lee2
1Department of Physical Medicine and Rehabilitation, Chang Gung Memorial Hospital, Chang Gung University, College of Medicine, Taoyuan, Taiwan.
Insights
Cervical spondylosis increases the risk of posterior circulation infarcts (POCI) in ischemic stroke patients. Hypertension is also a significant risk factor for POCI, highlighting the need for vigilance in at-risk individuals.
Area of Science:
- Neurology
- Vascular Medicine
- Orthopedics
Background:
- Cervical spondylosis is a known cause of vertebral artery stenosis.
- Cervical osteophytes can compress the vertebral artery, leading to posterior circulation infarcts (POCI).
- Limited research exists on risk factors and stroke subtypes in ischemic stroke patients with cervical spondylosis.
Purpose of the Study:
- To analyze risk factors and stroke subtypes in ischemic stroke patients with and without cervical spondylosis.
- To identify predictors of POCI by comparing patients with and without POCI.
Main Methods:
- A case-controlled study comparing ischemic stroke patients with cervical spondylosis (Stroke+C group, n=38) and without (Stroke-C group, n=152).
- Data collected included demographics, stroke risk factors (hypertension, diabetes, etc.), and stroke classification (Oxford Community Stroke Project).
- Patients were categorized into POCI or non-POCI groups; vertebral artery ultrasound findings were recorded for the Stroke+C group.
Main Results:
- The Stroke+C group had a higher incidence of POCI (34.2%) compared to the Stroke-C group (17.5%) (OR=2.41, P<0.05).
- Hypertension (OR=3.41, P<0.01) and cervical spondylosis (OR=2.41, P<0.05) were identified as independent risk factors for POCI.
- Vertebral artery stenosis was assessed in the Stroke+C group.
Conclusions:
- Ischemic stroke patients with cervical spondylosis have a higher propensity for POCI.
- Hypertension is a significant independent risk factor for POCI in ischemic stroke patients.
- Clinical attention should be directed towards the potential for POCI in patients diagnosed with cervical spondylosis.
Background:
Cervical spondylosis is one of the extrinsic factors causing vertebral artery stenosis. Several case studies have reported compression of the vertebral artery induced by cervical osteophytes that has resulted in posterior circulation infarcts (POCI). However, to the best of our knowledge, no studies have yet analyzed differences in the risk factors and stroke subtypes between ischemic stroke patients with cervical spondylosis and those without.
Purpose:
In the case-controlled study reported here, we analyzed the risk factors and stroke subtypes in ischemic stroke patients with and without cervical spondylosis. Characteristics in all the recruited patients with POCI and non-POCI were further compared to extract other risk factors that could predict the occurrence of POCI.
Methods And Patients:
We filtered out ischemic stroke patients with cervical spondylosis ("Stroke+C" group) by International Classification of Diseases, Ninth Revision codes. We analyzed the data of 38 subjects in the Stroke+C group and 152 sex- and age-comparable ischemic stroke patients without cervical spondylosis ("Stroke-C" group). We recorded the demographic characteristics including sex and age, and stroke risk factors, including diabetes mellitus, hypertension, heart disease, hyperlipidemia, and smoking habits. The stroke classifications were defined by the Oxford Community Stroke Project classification. All subjects were further categorized into POCI or non-POCI groups. The ultrasound findings of the vertebral arteries (extracranial and intracranial) in the Stroke+C group were also recorded.
Results:
More patients in the Stroke+C group tended to have POCI (34.2%) than patients in the Stroke-C group (17.5%) (odds ratio [OR] =2.41, P<0.05). Furthermore, hypertension (OR=3.41, P<0.01) and cervical spondylosis (OR=2.41, P<0.05) were two independent risk factors for POCI in ischemic stroke patients.
Conclusion:
Ischemic stroke patients with cervical spondylosis are more prone to POCI than those without cervical spondylosis. Hypertension is another identified risk factor for POCI in ischemic stroke patients. The occurrence of POCI should be highlighted for patients with cervical spondylosis.
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