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Updated: May 11, 2026

A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology
Published on: February 7, 2015
White-coat and masked hypertension are associated with carotid atherosclerosis in a general population: the Hisayama
Masayo Fukuhara1, Hisatomi Arima, Toshiharu Ninomiya
1Department of Environmental Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
Insights
White-coat hypertension (WCHT), masked hypertension (MHT), and sustained hypertension (SHT) are linked to carotid atherosclerosis. This study in Japanese adults shows all hypertension types increase carotid artery disease risk.
Area of Science:
- Cardiovascular Medicine
- Hypertension Research
- Vascular Biology
Background:
- Blood pressure status is categorized into normotension, white-coat hypertension (WCHT), masked hypertension (MHT), and sustained hypertension (SHT) using combined clinic and home measurements.
- While MHT and SHT clearly impact arterial disease, the influence of WCHT remains less understood.
- Investigating the association between different hypertension types and carotid atherosclerosis is crucial for understanding cardiovascular risk.
Purpose of the Study:
- To examine the relationship between WCHT, MHT, and SHT with carotid atherosclerosis.
- To assess these associations within a general Japanese population aged 40 years and older.
Main Methods:
- A cross-sectional survey of 2915 Japanese adults (≥ 40 years) was conducted.
- Hypertension categories were defined based on clinic blood pressure (CBP) and home blood pressure (HBP) readings.
- Carotid intima-media thickness and stenosis were measured using automated systems.
Main Results:
- Subjects with WCHT (6.9%), MHT (21.9%), and SHT (24.1%) showed significantly higher mean carotid intima-media thickness compared to normotensive individuals (47.1%).
- All hypertension types were associated with an increased likelihood of carotid stenosis (≥30% diameter reduction).
- These associations persisted even after adjusting for other cardiovascular risk factors.
Conclusions:
- White-coat hypertension, masked hypertension, and sustained hypertension are all associated with carotid atherosclerosis.
- The findings highlight the importance of considering all forms of hypertension in cardiovascular risk assessment.
- These results are specific to the general Japanese population studied.
Background And Purpose:
On the basis of combined measurements of clinic blood pressure (CBP) and home blood pressure (HBP), blood pressure status can be divided into normotension, white-coat hypertension (WCHT), masked hypertension (MHT), and sustained hypertension (SHT). Despite the clear impact of MHT and SHT on clinical and subclinical arterial disease, uncertainty about the influence of WCHT remains. The objective of this study was to investigate the associations of WCHT, MHT, and SHT with carotid atherosclerosis in a general population.
Methods:
This is a cross-sectional survey of 2915 community-dwelling Japanese aged ≥ 40 years. Normotension was defined as CBP<140/90 and HBP<135/85 mm Hg; WCHT, CBP ≥ 140/90 and HBP<135/85 mm Hg; MHT, CBP<140/90 and HBP ≥ 135/85 mm Hg; and SHT, CBP ≥ 140/90 and HBP ≥ 135/85 mm Hg. Mean intima-media thickness of carotid arteries was measured using a computer-automated system, and carotid stenosis was defined as diameter stenosis ≥ 30%.
Results:
There were 1374 subjects (47.1%) with normotension, 200 (6.9%) with WCHT, 639 (21.9%) with MHT, and 702 (24.1%) with SHT. The geometric average of mean intima-media thickness was significantly higher among subjects with WCHT (0.73 mm), MHT (0.77 mm), and SHT (0.77 mm) than those with normotension (0.67 mm; all P<0.001 versus normotension). Compared with normotension, all types of hypertension were also associated with increased likelihood of carotid stenosis (age- and sex-adjusted odds ratio, 2.36 [95% confidence interval, 1.27-4.37] for WCHT, 1.95 [1.25-3.03] for MHT, and 3.02 [2.01-4.54] for SHT). These associations remained significant even after adjustment for other cardiovascular risk factors.
Conclusions:
WCHT, as well as MHT, and SHT were associated with carotid atherosclerosis in a general Japanese population.
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