Blood pressure control assessed by home, ambulatory and conventional blood pressure measurements in the Japanese general population: The Ohasama study

Atsushi Hozawa, Takayoshi Ohkubo, Masahiro Kikuya, Junko Yamaguchi, Kaori Ohmori, Tohru Fujiwara, Junichiro Hashimoto, Mitsunobu Matsubara, Hirofumi Kitaoka, Kenichi Nagai, Ichiro Tsuji, Hiroshi Satoh, Shigeru Hisamichi, Yutaka Imai

Research output: Contribution to journalArticlepeer-review

80 Citations (Scopus)

Abstract

To assess blood pressure control in the Japanese population, we analyzed previously obtained measurements of conventional, home and ambulatory blood pressures in 1,174 subjects aged ≥40 in a Japanese community. On the basis of conventional blood pressure values and the use of antihypertensive medication, participants were classified as normotensive, untreated hypertensive and treated hypertensive subjects. When 140/90, 135/85 and 135/85 mmHg were used as the hypertension criteria for conventional, home and ambulatory blood pressure measurements, respectively, all three blood pressure values were higher in untreated and treated hypertensive subjects than in normotensive subjects. Among the treated hypertensive subjects, approximately half were classified as hypertensive not only by conventional blood pressure, but also by home or ambulatory measurements. Approximately 10% of the subjects defined as normotensive by conventional blood pressure measurement were classified as hypertensive by home or ambulatory measurements, whereas 60% of the untreated hypertensive subjects as defined by conventional blood pressure measurement had normal home or ambulatory blood pressure values. Therefore, we concluded that 1) the poor blood pressure control in treated hypertensive subjects was attributable not only to the white coat effect but also to inadequate control of blood pressure; and 2) a certain percentage of subjects were misclassified as hypertensive or normotensive by conventional blood pressure measurement.

Original languageEnglish
Pages (from-to)57-63
Number of pages7
JournalHypertension Research
Volume25
Issue number1
DOIs
Publication statusPublished - 2002

Keywords

  • Ambulatory blood pressure
  • Blood pressure control
  • Conventional blood pressure
  • Home blood pressure
  • Population based subjects

ASJC Scopus subject areas

  • Internal Medicine
  • Physiology
  • Cardiology and Cardiovascular Medicine

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