since the vasodilatory , antiaggregatory prostacyclin ( pgi2 ) and its antagonist thromboxane a2 ( txa2 ) evidently take part in the regulation of the fetoplacental blood flow , the influence of drugs commonly used during pregnancy , such as betamimetics ( ritodrine and buphenine ) and glucocorticoids ( hydrocortisone and dexamethasone ) , on fetal pgi2 and txa2 productions was investigated .
C0032961
pregnancy
C0035661
ritodrine