Blood Pressure Control and Risk of Stroke. A Population-Based Prospective Cohort Study.
(2005) In Stroke: a journal of cerebral circulation 36(4). p.725-730- Abstract
- Background and Purpose— Adequate control of blood pressure (BP) is a cornerstone in stroke prevention. This study explored the risk of stroke in relation to the quality of BP control in a population-based cohort and whether control of hypertension was related to background characteristics of patients.
Methods— A total of 27 936 subjects (10 953 men and 16 983 women), 45 to 73 years old, living in Malmö, Sweden participated in the study. Incidence of stroke was followed-up for a mean period of 6 years. Controlled BP was defined as BP <140/90 mm Hg in subjects with pharmacological treatment for hypertension.
Results— In the whole cohort, 16 648 subjects (60%) had hypertension (BP ≥140/90 mm Hg) and... (More) - Background and Purpose— Adequate control of blood pressure (BP) is a cornerstone in stroke prevention. This study explored the risk of stroke in relation to the quality of BP control in a population-based cohort and whether control of hypertension was related to background characteristics of patients.
Methods— A total of 27 936 subjects (10 953 men and 16 983 women), 45 to 73 years old, living in Malmö, Sweden participated in the study. Incidence of stroke was followed-up for a mean period of 6 years. Controlled BP was defined as BP <140/90 mm Hg in subjects with pharmacological treatment for hypertension.
Results— In the whole cohort, 16 648 subjects (60%) had hypertension (BP ≥140/90 mm Hg) and 23% of them received treatment. Among treated hypertensives, 88.2% had BP levels ≥140/90 mm Hg and 49.5% had BP levels ≥160/100 mm Hg. During the follow-up, 137 strokes occurred among treated hypertensive subjects. The crude incidence of stroke was 289/100 000 person-year in controlled hypertensive subjects and 705/100 000 person-year in treated hypertensive subjects with BP ≥140/90 mm Hg. It was estimated that {approx}45% of all strokes among subjects with treatment for hypertension might be attributed to uncontrolled BP. In treated hypertensives, the risk of stroke increased significantly with advancing age, current smoking, high level of diastolic BP, and diabetes. In hypertensive subjects without treatment (n=12 819), incidence of stroke was 363/100 000 person-year.
Conclusion— Uncontrolled BP is highly prevalent in patients with pharmacological treatment for hypertension. More than 90% of stroke in this group occurred in those with uncontrolled BP. Adequate hypertension control may prevent a substantial proportion of first-ever stroke among treated hypertensives. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/135193
- author
- Li, Cairu LU ; Engström, Gunnar LU ; Hedblad, Bo LU ; Berglund, Göran LU and Janzon, Lars LU
- organization
- publishing date
- 2005
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- blood pressure, hypertension, stroke
- in
- Stroke: a journal of cerebral circulation
- volume
- 36
- issue
- 4
- pages
- 725 - 730
- publisher
- American Heart Association
- external identifiers
-
- wos:000228039700011
- pmid:15746450
- scopus:16844384024
- ISSN
- 1524-4628
- DOI
- 10.1161/01.STR.0000158925.12740.87
- language
- English
- LU publication?
- yes
- id
- e32bc12f-14b4-4a69-aa8a-941d4288fed0 (old id 135193)
- alternative location
- http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=15746450&dopt=Abstract
- date added to LUP
- 2016-04-01 16:29:59
- date last changed
- 2022-03-22 19:09:53
@article{e32bc12f-14b4-4a69-aa8a-941d4288fed0,
abstract = {{Background and Purpose— Adequate control of blood pressure (BP) is a cornerstone in stroke prevention. This study explored the risk of stroke in relation to the quality of BP control in a population-based cohort and whether control of hypertension was related to background characteristics of patients.<br/><br>
<br/><br>
Methods— A total of 27 936 subjects (10 953 men and 16 983 women), 45 to 73 years old, living in Malmö, Sweden participated in the study. Incidence of stroke was followed-up for a mean period of 6 years. Controlled BP was defined as BP <140/90 mm Hg in subjects with pharmacological treatment for hypertension.<br/><br>
<br/><br>
Results— In the whole cohort, 16 648 subjects (60%) had hypertension (BP ≥140/90 mm Hg) and 23% of them received treatment. Among treated hypertensives, 88.2% had BP levels ≥140/90 mm Hg and 49.5% had BP levels ≥160/100 mm Hg. During the follow-up, 137 strokes occurred among treated hypertensive subjects. The crude incidence of stroke was 289/100 000 person-year in controlled hypertensive subjects and 705/100 000 person-year in treated hypertensive subjects with BP ≥140/90 mm Hg. It was estimated that {approx}45% of all strokes among subjects with treatment for hypertension might be attributed to uncontrolled BP. In treated hypertensives, the risk of stroke increased significantly with advancing age, current smoking, high level of diastolic BP, and diabetes. In hypertensive subjects without treatment (n=12 819), incidence of stroke was 363/100 000 person-year.<br/><br>
<br/><br>
Conclusion— Uncontrolled BP is highly prevalent in patients with pharmacological treatment for hypertension. More than 90% of stroke in this group occurred in those with uncontrolled BP. Adequate hypertension control may prevent a substantial proportion of first-ever stroke among treated hypertensives.}},
author = {{Li, Cairu and Engström, Gunnar and Hedblad, Bo and Berglund, Göran and Janzon, Lars}},
issn = {{1524-4628}},
keywords = {{blood pressure; hypertension; stroke}},
language = {{eng}},
number = {{4}},
pages = {{725--730}},
publisher = {{American Heart Association}},
series = {{Stroke: a journal of cerebral circulation}},
title = {{Blood Pressure Control and Risk of Stroke. A Population-Based Prospective Cohort Study.}},
url = {{http://dx.doi.org/10.1161/01.STR.0000158925.12740.87}},
doi = {{10.1161/01.STR.0000158925.12740.87}},
volume = {{36}},
year = {{2005}},
}