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Table 2 Summary of identified parameters L ao , A ao,0 for all pigs and ranges of physiological parameters, mean aortic pressure (MAP), PWV, systolic period, and measured SV for volume expansion and dobutamine period

From: Improved pressure contour analysis for estimating cardiac stroke volume using pulse wave velocity measurement

  Pig 1 Pig 2 Pig 3 Pig 4
Weight (kg)
  24.5 20 23.5 23.3
Identified aortic dimension
 L-ao (m) 0.88 0.41 0.89 0.91
 Aao,0 (mm2) 201 269 473 163
Volume expansion
 MAP (mmHg) 152 [136 to 182] 114 [93 to 136] 111 [93 to 132] 55 [42 to 77]
 PWV (m/s) 5.5 [5.3 to 6.0] 6.7 [6.4 to 6.9] 8.5 [8.2 to 8.9] 3.9 [3.7 to 4.1]
 Heart rate (beats/min) 64 [62 to 67] 86 [78 to 94] 81 [73 to 88] 71 [69 to 74]
 Systolic period (s) 0.38 [0.33 to 0.46] 0.32 [0.25 to 0.39] 0.31 [0.26 to 0.38] 0.33 [0.31 to 0.36]
 SVmeasured (ml) 34 [28 to 40] 19 [16 to 23] 30 [26 to 39] 29 [25 to 34]
Dobutamine/+ volume expansion
 Pressure (mmHg) 150 [123 to 184] 90 [54 to 124] 100 [79 to 123] 61 [43 to 95]
 PWV (m/s) 6.0 [5.6 to 6.7] 6.3 [5.4 to 6.8] 8.2 [7.6 to 8.8] 4.6 [4.3 to 5.2]
 Heart rate (beats/min) 104 [90 to 108] 141 [136 to 142] 109 [98 to 120] 107 [93 to 115]
 Systolic period (s) 0.23 [0.22 to 0.31] 0.19 [0.18 to 0.22] 0.23 [0.19 to 0.3] 0.23 [0.21 to 0.31]
 SVmeansreud (ml) 28 [23 to 36] 24 [17 to 27] 25 [21 to 28] 27 [22 to 31]
Total no of heart beats analysed
  2956 4945 3057 2451
  1. Data are presented as the mean [5th–95th percentiles]