Key result
Winter season links to slightly higher systolic BP only in normotensive patients.
Why the study?
The seasonal variation in arterial blood pressure between winter and summer in normotensive and hypertensive subjects was not well characterized.
Does winter season increase blood pressure compared to summer in normotensive and hypertensive subjects?
Population
174 normotensive and 50 hypertensive subjects
Comparison
Winter season vs summer season arterial pressures
Design
Retrospective within-patient study
Authors
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Small winter BP rises in this cohort warrant no practice change; leaves open need for prospective outcome trials.
Does winter season increase blood pressure compared to summer in normotensive and hypertensive subjects?
Blood pressure tends to be slightly higher in winter compared to summer, particularly systolic pressure in normotensive individuals.
Abdulla et al. (1988) studied this question. Winter season was associated with slightly higher blood pressures in normotensive and hypertensive subjects, reaching statistical significance only for systolic pressure in normotensives.
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