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Table 5 Effect of Mental Stress on Middle Cerebral Artery Flow Velocities in Normal and Hypertensive Subjects.

From: Cerebrovascular mental stress reactivity is impaired in hypertension

 

Normal (n = 10)

Hypertension (n = 12)

MCA Doppler Velocities (cm/sec)

Baseline

Peak

Baseline

Peak

Peak Systolic Velocity

84 ± 22

95 ± 22*

70 ± 18

73 ± 22

End Diastolic Velocity

42 ± 12

49 ± 14*

34 ± 14

37 ± 14

Time Averaged Mean Velocity

30 ± 13

39 ± 13*

25 ± 9

26 ± 9

  1. Values are mean ± SD.*p < 0.05 vs baseline.