Visit-to-visit blood pressure variability, average BP level and carotid arterial stiffness in the elderly: a prospective study

J Hum Hypertens. 2017 Apr;31(4):292-298. doi: 10.1038/jhh.2016.77. Epub 2016 Oct 20.

Abstract

In a cross-sectional study, visit-to-visit blood pressure (BP) variability was shown to be associated with artery remodelling. Here, we investigated the impact of visit-to-visit BP variability and average BP on the carotid artery remodelling progression in high-risk elderly according to different classes of antihypertension medication use/non-use. BP measurements and carotid ultrasound were performed in the common carotid artery in 164 subjects (mean age 79.7 years at baseline, 74.7% females) with one or more cardiovascular risk factors. Based on 12 visits (1 × /month for 1 year), we calculated visit-to-visit BP variability expressed as the standard deviation (s.d.), coefficient of variation (CV), maximum BP, minimum BP and delta (maximum-minimum) BP. We measured mean intima-media thickness (IMT) as well as stiffness parameter β were measured at baseline and at the mean 4.2-year follow-up. In a multiple regression analysis, the maximum, minimum, s.d. and average of systolic BP (SBP) were significantly associated with a change in β-values between the baseline and follow-up after adjustment for age, smoking, lower high-density lipoprotein level, baseline β-value and follow-up period. There were no significant associations between the visit-to-visit BP variability measures and the change in mean IMT. Significant associations of maximum, minimum, s.d. and average SBP were found with increased β-values in the subjects without calcium channel blocker (CCB) use and in the subjects using renin-angiotensin system inhibitors (RASIs). Thus, exaggerated visit-to-visit SBP variability and a high average SBP level were significant predictors of progression in carotid arterial stiffness in high-risk elderly without CCBs use and in those using a RASI.

MeSH terms

  • Aged
  • Aged, 80 and over
  • Angiotensin Receptor Antagonists / pharmacology*
  • Angiotensin Receptor Antagonists / therapeutic use
  • Blood Pressure*
  • Calcium Channel Blockers / pharmacology*
  • Calcium Channel Blockers / therapeutic use
  • Carotid Artery, Common / diagnostic imaging
  • Carotid Artery, Common / drug effects*
  • Carotid Intima-Media Thickness
  • Female
  • Humans
  • Hypertension / drug therapy
  • Male
  • Prospective Studies
  • Vascular Stiffness*

Substances

  • Angiotensin Receptor Antagonists
  • Calcium Channel Blockers