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Table 1 PWV parameters assessed by in vivo Doppler ultrasound

From: In vivo assessment of arterial stiffness in the isoflurane anesthetized spontaneously hypertensive rat

Age n Heart rate (bpm) Distance (D) (mm) R to Carotid foot (msec) R to Iliac foot (msec) Time (T) (msec) PWV (m/sec)
SHR (young) 10 439 ± 34 134.0 ± 9.7 24.3 ± 2.9 41.1 ± 2.3 16.8 ± 1.3 8.0 ± 0.8
SHR (old) 10 432 ± 32 156.0 ± 10.7 23.8 ± 3.9 35.9 ± 3.8 12.1 ± 2.3 13.2 ± 2
  N.S. P < 0.001 N.S. P < 0.01 P < 0.001 P < 0.001
  1. D = distance from the carotid to the iliac notch.
  2. R = R wave of the EKG.
  3. T = (R to Iliac foot) – (R to Carotid foot).
  4. Data are presented as mean ± SD.