title: Ambulatory blood pressure: associations with coronary heart disease in the aged Finnish population.
abstract: OBJECTIVE
  Ambulatory blood pressure (ABP) has been shown to be a better predictor of cardiovascular events than clinical blood pressure (BP) in middle-aged and older populations. This study studied the association of various components of ABP (daytime, night-time, 24-hour ABP) in the presence of coronary heart disease (CHD) in an older Finnish population.
  
  
  METHODS
  This cross-sectional, observational, population-based study was carried out in The Lieto Health Centre, Finland, in 1998-99. The study population consisted of 502 subjects (237 men, 265 women) aged 64-87 years. ABP measurements for 24 hours, daytime (awake) and night-time (asleep), were made. Resting electrocardiograms (ECG) were recorded. A person was considered to have CHD if at least one of the following criteria was met: (I) history of coronary by-pass surgery or coronary angioplasty, (II) diagnosis of CHD in previous medical records, (III) ischemia-related changes on ECG.
  
  
  RESULTS
  CHD increased by 30% with a 10 mmHg increase in night-time systolic blood pressure (SBP) (OR 1.30, 95% Cl 1.15-1.47). When ambulatory 24-hour and daytime SBP values were each entered separately into the multivariate model, 24-hour SBP, but not daytime SBP, was associated with CHD.
  
  
  CONCLUSIONS
  The most important information gained from 24-h BP monitoring in subjects with CHD is night-time BP. Night-time BP may provide new information about the CHD risk which is not identified in common clinical diagnoses of hypertension. ABP measurements should be made to confirm sufficient control of night-time BP, especially SBP, in older people with CHD.
authors.affiliation: Department of Clinical Physiology, Nuclear Medicine and Positron Emission Tomography, Turku University Central Hospital, FI-20521 Turku, Finland. marwen@utu.fi
authors.forename: Maria
authors.initials: M
authors.lastname: Wendelin-Saarenhovi
authors.forename: Raimo
authors.initials: R
authors.lastname: Isoaho
authors.forename: Jaakko
authors.initials: J
authors.lastname: Hartiala
authors.forename: Sirkka-Liisa
authors.initials: SL
authors.lastname: Kivelä
authors.forename: Hans
authors.initials: H
authors.lastname: Helenius
authors.forename: Kerttu
authors.initials: K
authors.lastname: Irjala
authors.forename: Minna
authors.initials: M
authors.lastname: Löppönen
authors.forename: Hannu
authors.initials: H
authors.lastname: Puolijoki
authors.forename: Eino
authors.initials: E
authors.lastname: Hietanen
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001794:Blood Pressure / Q000502:physiology*; D018660:Blood Pressure Monitoring, Ambulatory; D003327:Coronary Disease / Q000503:physiopathology*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D012307:Risk Factors