Higher aortic-brachial pulse wave velocity ratio is associated with large artery atherosclerosis-related ischemic
Kamil Kowalczyk1, Mariusz Kwarciany1, Krzysztof Narkiewicz2
1Department of Adult Neurology, Medical University of Gdańsk, Gdańsk, Poland.
Insights
The pulse wave velocity (PWV) ratio is higher in patients with large artery atherosclerosis (LAA) ischemic stroke. This arterial stiffness index may serve as a valuable vascular risk marker, independent of blood pressure.
Area of Science:
- Cardiology
- Neurology
- Vascular Medicine
Background:
- Hypertension is a key modifiable risk factor for ischemic stroke (IS) linked to large artery atherosclerosis (LAA).
- Arterial stiffness indices, such as pulse wave velocity (PWV), can enhance risk stratification beyond traditional blood pressure (BP) measurements.
- Elevated PWV is a recognized risk and prognostic factor for IS and is associated with carotid artery atherosclerosis.
Purpose of the Study:
- To investigate if the aortic-brachial pulse wave velocity (PWV) ratio differs between ischemic stroke subtypes.
- To determine if the PWV ratio is independent of mean blood pressure (MBP) in ischemic stroke patients.
Main Methods:
- Carotid-radial (cr-PWV) and carotid-femoral PWV (cf-PWV) were measured in 188 IS patients.
- The PWV ratio was calculated as cf-PWV/cr-PWV.
- Stroke etiology was classified using the TOAST criteria, and associations with PWV ratio and MBP were analyzed.
Main Results:
- The PWV ratio was significantly higher in patients with LAA-related stroke (1.26) compared to non-LAA stroke (1.10).
- This difference remained significant after multivariate adjustment (OR = 3.40, p = 0.02).
- The PWV ratio showed no significant association with mean blood pressure (p = 0.79).
Conclusions:
- The PWV ratio is elevated in large artery atherosclerosis-related ischemic stroke.
- The findings support the potential utility of the PWV ratio as a vascular risk marker.
- The PWV ratio appears to be independent of blood pressure in ischemic stroke patients.
Background:
Hypertension is one of the main modifiable risk factors for ischemic stroke related to large artery atherosclerosis. Arterial stiffness indices may improve risk stratification beyond blood pressure (BP) measurement alone. Increased pulse wave velocity (PWV) is a risk and prognostic factor for ischemic stroke (IS) and is associated with carotid artery atherosclerosis. We investigated whether the aortic-brachial pulse wave velocity (PWV) ratio differs between stroke subtypes and whether it is independent of mean blood pressure (MBP) in ischemic stroke patients.
Methods:
We measured carotid-radial (cr-PWV) and carotid-femoral PWV (cf-PWV) on day 6 of hospitalization in 188 IS subjects. PWV ratio was calculated as cf-PWV/cr-PWV. The etiology of stroke was determined following appropriate diagnostic investigations. Stroke etiology was determined according to TOAST classification. Associations between PWV ratio, stroke subtype, and MBP were analyzed using uni- and multivariate models.
Results:
Forty-one patients (21.8%) had stroke related to large artery atherosclerosis (LAA). The PWV ratio was higher in LAA compared with non-LAA stroke [1.26 (1.09-1.58) vs. 1.10 (0.95-1.36), p < 0.01], remaining significant after adjustment (OR = 3.40, 95%CI = 1.18-9.79, p = 0.02). PWV ratio was not associated with MBP (p = 0.79).
Conclusions:
PWV ratio is elevated in LAA-related ischemic stroke and was not significantly associated with BP, supporting its potential role as a vascular risk marker.
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