Table 1.

Technical requirements and their assessment.

Technical requirements	Assessment
Cardiovascular system	Represented vessels
Closed loop	Yes or no
Pulsatile	Yes; TVEM, OFM, PP or no
Wave propagation	Yes or no
Maternal-fetal gas exchange	Yes or no
Fetal growth	Yes or no; age and/or weight
Baro- and chemoreceptor reflex	Yes or no

OFM, one fiber model; PP, prescribed pressure or flow profile; and TVEM, time varying elastance model.