
%0 Journal Article
%A Newnham, JP 
%A Kelly, RW 
%A Boyne, P 
%A Reid, SE 
%T Ultrasound guided blood sampling from fetal sheep
%J Australian Journal of Agricultural Research
%D 1989/04/01
%V 40
%N 2
%P 401-407
%K 
%R https://doi.org/10.1071/AR9890401
%U https://www.publish.csiro.au/paper/AR9890401 
%X The feasibility of obtaining fetal blood samples by needle aspiration under ultrasound guidance was assessed in 32 fetal sheep from 101-1 36 days' gestation. Seventy-six attempts at blood sampling were made, of which all but two were successful. The overall fetal death rate resulting from this procedure was 9.2%. However, with increasing operator experience and with advancing gestational age, 95.5% of fetuses survived the procedure. Repeated sampling from individual fetuses had minimal effects on arterial blood gas values. Ultrasound guided blood sampling now provides an alternative to chronic catheterization as a basis for some types of research with fetal sheep. 
