Fig. 5
From: Ultrasound parameters of arteries and heart in normal fetuses

The left cardiac output (LCO) was in a significant (P < 0.05) positive correlation with right cardiac output (RCO), combined cardiac output (CCO), and the flow volume of brachiocephalic artery (BA), left common carotid artery (LCCA), left subclavian artery (LSA), isthmus, and descending aorta (DAO), and the RCO was significantly positively correlated with the CCO and the flow volume of ductus arteriosus (DA) and DAO. In normal condition, the RCO contributed more to the CCO and DAO flow volume, whereas the LCO contributed more to the isthmus flow volume