Twenty-five healthy and thirty-one preeclamptic pregnant women were assessed by means
of transcranial Doppler sonography. Resting cerebral blood flow velocities in the middle
cerebral arteries were measured followed by a repeat measurement 30 s after breath
holding. Absolute blood flow velocities and per cent changes after breath holding procedure
were compared between the groups. Absolute blood flow velocities were higher in
preeclamptic pregnant women both at rest and after breath holding. The per cent increase in …