title: Blood pressure measurement by pulse oxymetric method and comparison with conventional technique.
abstract: BACKGROUND
  Measurement of systolic arterial blood pressure using a pulse oxymeter involves the evaluation of plethysmographic waveform during inflation and/or deflation of a blood pressure cuff. The purpose of this study was to determine that during slow inflation and deflation of cuff, which one of the pulse oxymetry-based readings of blood pressure is in best agreement with the value obtained by conventional method.
  
  
  METHODS
  Blood pressure was measured in a sample of 50 healthy adult volunteers with conventional and pulse oxymetric methods. The degree of agreement between two methods was calculated.
  
  
  RESULTS
  The mean difference between systolic blood pressure and pulse oximetric blood pressure during inflation of the cuff was 0.06 +/- 1.75 mmHg which was not different from zero. The highest correlation was also between these two pressures (0.988).
  
  
  CONCLUSIONS
  This study shows that the best agreement is between systolic blood pressure and pulse oxymetric blood pressure during inflation. We conclude that for accurate measurement of blood pressure by pulse oxymetric method it is necessary to inflate the blood pressure cuff at a slow speed for the pulse oxymeter to have enough time to reach equilibrium state.
authors: Department of Anesthesia and Critical Care, Isfahan University of Medical Sciences, Isfahan, Iran.
authors: Gholam Reza
authors: GR
authors: Khalili
authors: Mahmood
authors: M
authors: Saghaei
authors: Mehran
authors: M
authors: Abedini
mesh_terms: D000328:Adult; D001795:Blood Pressure Determination / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010092:Oximetry