Table 2 Mean±s.d. of the measurements by the three devices and SphygmoCor's estimates after cross calibration by three methods

From: Calibration mode influences central blood pressure differences between SphygmoCor and two newer devices, the Arteriograph and Omron HEM-9000

   

SphygmoCor

    

Calibrated by a

mm Hg or %

Omron HEM-9000

Arteriograph

Original

Method 1

Method 2

Method 3

cSBP

127.3±16

123.5±20

114.8±13

115.5±17

115.3±17

122.6±17

pSBP2

112.1±15

NA

NA

NA

NA

NA

SBP

126.2±14

125.9±18

125.2±14b

NA

NA

NA

aoAIx (%)

NA

30±13

22±9

22±9

22±9

22±9

rdAIx (%)

73±11

NA

76±13

76±13

76±13

76±13

brAIx (%)

NA

−15±25

NA

NA

NA

NA

  1. Abbreviations: aoAIx, aortic augmentation index; brAIx, brachial augmentation index; cSBP, central systolic blood pressure; NA, not applicable; pSBP2, late systolic shoulder on the radial pulse pressure waveform; rdAIx, radial augmentation index.
  2. aCross calibrated with Arteriograph's brachial blood pressure (BPs). See text for Methods 1–3. Using Omron HEM-9000's brachial BPs gave similar results.
  3. bMeasured by a standard Omron oscillometric sphygmomanometer.