Die Mikroblutuntersuchung am Fetus

The Validity of Foetal Capillary Blood Samples during Labour

“…T h e re su lts are in good ag reem ent w ith th e findings o f K u b li et al [12] On th e o th e r h a n d , D avey et al [7] rep o rted a d ifferen t situ a tio n betw een th e acid-base v alu es o f cap illary a n d cord blood. T h ey sam pled fo etal cap illa ry blood d u rin g 34 full-term C aesarean sections perfo rm ed on h e a lth y p a rtu rie n ts an d they found th a t th e fo etal cap illa ry blood w as m ore acid o tic th a n the um bilical a rte ry blood.…”

“…A ni m al e x p erim en ts show th a t th e foetal b rain receives blood w ith a h ig h e r oxygen c o n te n t th a n th e blood in the descending a o rta and um bilical arteries, a lth o u g h th e difference is unex p ected ly sm all [5,6]. T h e resu lts o f K u b li et al [12] an d o f th e present s tu d y w ould suggest t h a t th e cap illa ry blood o f th e fo etal scalp is also a little b e tte r ox y g e n a te d th a n th e blood of th e um bilical a rte ry .…”

“…Sources of tech n ical e rro r h a v e been th o ro u g h ly stu d ied b y Bretscher [2], Sating [19] an d Zernickow [25]. D u rin g o r b etw een uterin e c o n tra c tio n s th ere are only sm all ch anges in acid-base v alues of fo etal cap illary blood [2,12,19].…”

Review article

“…The rarity of this is shown by our figures; of 13,400 cases supervised by FBA up to June 1980, not one infant bled to death. Other complications reported are breaking of the blade [36], cephalhaematoma [34], broken glass capillaries in the fetal scalp [40,44] and neonatal blood loss due to bleeding from the scalp wound [45]. From the experience of the 18 Qinics listed in Tab, I, the incidence of complications is influenced by the routine skill of doctors or midwives (Tab.…”