title: Invasive validation of arteriograph estimates of central blood pressure in patients with type 2 diabetes.
abstract: BACKGROUND
  Central blood pressure (BP) has attracted increasing interest because of a potential superiority over brachial BP in predicting cardiovascular morbidity and mortality. Several devices estimating central BP noninvasively are now available. The aim of our study was to determine the validity of the Arteriograph, a brachial cuff-based, oscillometric device, in patients with type 2 diabetes.
  
  
  METHODS
  We measured central BP invasively and compared it with the Arteriograph-estimated values in 22 type 2 diabetic patients referred to elective coronary angiography.
  
  
  RESULTS
  The difference (invasively measured BP minus Arteriograph-estimated BP) in central systolic BP (SBP) was 4.4±8.7 mm Hg (P = 0.03). The limits of agreement were ±17.1 mm Hg.
  
  
  CONCLUSIONS
  Compared with invasively measured central SBP, we found a systematic underestimation by the Arteriograph. However, the limits of agreement were similar to the previous Arteriograph validation study and to the invasive validation studies of other brachial cuff-based, oscillometric devices. A limitation in our study was the large number of patients (n = 14 of 36) in which the Arteriograph was unable to analyze the pressure curves. In a research setting, the Arteriograph seems applicable in patients with type 2 diabetes.
  
  
  BACKGROUND
  ClinicalTrials.gov ID NCT01538290.
authors.affiliation: Department of Medicine, Silkeborg Regional Hospital, Silkeborg, Denmark.
authors.forename: Niklas Blach
authors.initials: NB
authors.lastname: Rossen
authors.forename: Esben
authors.initials: E
authors.lastname: Laugesen
authors.forename: Christian Daugaard
authors.initials: CD
authors.lastname: Peters
authors.forename: Eva
authors.initials: E
authors.lastname: Ebbehøj
authors.forename: Søren Tang
authors.initials: ST
authors.lastname: Knudsen
authors.forename: Per Løgstrup
authors.initials: PL
authors.lastname: Poulsen
authors.forename: Hans Erik
authors.initials: HE
authors.lastname: Bøtker
authors.forename: Klavs Würgler
authors.initials: KW
authors.lastname: Hansen
mesh_terms: D000368:Aged; D001794:Blood Pressure; D001795:Blood Pressure Determination / Q000295:instrumentation*; D002406:Catheterization, Peripheral / Q000295:instrumentation*; D003718:Denmark; D003924:Diabetes Mellitus, Type 2 / Q000175:diagnosis / Q000503:physiopathology*; D004867:Equipment Design; D006801:Humans; D008297:Male; D011237:Predictive Value of Tests; D015203:Reproducibility of Results; D014160:Transducers, Pressure; D062666:Vascular Access Devices
keywords: blood pressure; brachial cuff-based, oscillometric devices for measurement of central BP; cardiovascular disease; cardiovascular risk; central blood pressure (BP); diabetes; hypertension; invasive validation of brachial cuff-based, oscillometric devices noninvasive measurement of central BP.