The effect of ambient temperature and barometric pressure on ambulatory blood pressure variability

Megan Jehn, Lawrence J. Appel, Frank M. Sacks, Edgar R. Miller

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

Background: The effect of ambient temperature on cardiovascular disease has previously been studied. Less known are the effects of climate on blood pressure (BP) regulation, specifically, the role of temperature on BP variability. Methods: We investigated the effect of temperature and barometric pressure on ambulatory BP variability in 333 men and women with above-optimal BP or stage 1 hypertension participating in the Dietary Approaches to Stop Hypertension (DASH) multicenter feeding trial. Each subject consumed the same diet for 3 weeks. Daytime, nighttime, and 24-h BP were recorded by ambulatory BP monitoring (ABPM). Climatologic data were obtained from local meteorologic centers. Results: After adjustment for body mass index (BMI), age, sex, baseline clinic systolic BP, and clinical center, systolic BP variability was inversely associated with 24-h temperature (P = .005) and daytime temperature (P = .006). There was no observed association between BP variability and barometric pressure. There was a significant trend of increasing nighttime systolic BP and diastolic BP with increasing temperature, but these results did not persist after adjustment for confounding variables. Conclusions: During periods of cold weather, an increase in BP variability may complicate the diagnosis and management of hypertension and may contribute to the high cardiovascular mortality observed in the winter.

Original languageEnglish (US)
Pages (from-to)941-945
Number of pages5
JournalAmerican Journal of Hypertension
Volume15
Issue number11
DOIs
StatePublished - Nov 1 2002
Externally publishedYes

Fingerprint

Blood Pressure
Pressure
Temperature
Hypertension
Ambulatory Blood Pressure Monitoring
Confounding Factors (Epidemiology)
Weather
Climate
Multicenter Studies
Body Mass Index
Cardiovascular Diseases
Diet
Mortality

Keywords

  • Ambulatory blood pressure monitoring
  • Atmospheric pressure
  • Blood pressure variability
  • Temperature

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

The effect of ambient temperature and barometric pressure on ambulatory blood pressure variability. / Jehn, Megan; Appel, Lawrence J.; Sacks, Frank M.; Miller, Edgar R.

In: American Journal of Hypertension, Vol. 15, No. 11, 01.11.2002, p. 941-945.

Research output: Contribution to journalArticle

Jehn, Megan ; Appel, Lawrence J. ; Sacks, Frank M. ; Miller, Edgar R. / The effect of ambient temperature and barometric pressure on ambulatory blood pressure variability. In: American Journal of Hypertension. 2002 ; Vol. 15, No. 11. pp. 941-945.
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