Prevalence of masked uncontrolled and treated white-coat hypertension defined according to the average of morning and evening home blood pressure value: From the Japan Home versus Office Measurement Evaluation Study

Taku Obara, Takayoshi Ohkubo, Masahiro Kikuya, Kei Asayama, Hirohito Metoki, Ryusuke Inoue, Takuya Oikawa, Rie Komai, Kayo Murai, Tsuyoshi Horikawa, Junichiro Hashimoto, Kazuhito Totsune, Yutaka Imai

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)

Abstract

OBJECTIVE: To evaluate the prevalence of masked uncontrolled and treated white-coat hypertension defined according to the average of morning and evening home blood pressure values. METHODS: The study population consisted of 3303 essential hypertensive outpatients receiving antihypertensive treatment in Japan. Information on the characteristics of the patients was collected by a physician's self-administrated questionnaire. The office blood pressure value was calculated as the average of the four readings in two visits. All patients were asked to measure their blood pressure once every morning and once every evening. In the study, we included patients with at least three measurements in the morning and in the evening, respectively. The average of all home blood pressure values was taken as the home blood pressure value. RESULTS: The mean value of home systolic/diastolic blood pressure was 136.8/79.3 mmHg, and the mean value of office systolic/diastolic blood pressure was 142.8/80.6 mmHg. Of the 3303 patients, 758 (23.0%) had controlled hypertension (home <135/85 mmHg and office <140/90 mmHg), 628 (19.0%) had masked uncontrolled hypertension (home <135/85 mmHg and office <140/90 mmHg), 640 (19.4%) had treated white-coat hypertension (home <135/85 mmHg and office <140/90 mmHg), and 1277 (38.7%) had uncontrolled hypertension (home <135/85 mmHg and office <140/90 mmHg). CONCLUSIONS: Treated white-coat hypertension and masked uncontrolled hypertension were often observed in clinical settings. Physicians need to understand the prevalence of such patients to prevent inadequate diagnosis and treatment in them.

Original languageEnglish
Pages (from-to)311-316
Number of pages6
JournalBlood pressure monitoring
Volume10
Issue number6
DOIs
Publication statusPublished - 2005 Dec

Keywords

  • Masked hypertension
  • Prevalence
  • White-coat hypertension

ASJC Scopus subject areas

  • Internal Medicine
  • Cardiology and Cardiovascular Medicine
  • Assessment and Diagnosis
  • Advanced and Specialised Nursing

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