LVO diameter LVO flow velocity Angle correction Time after birth LVO (mL/kg/min) Preterm infants Term infants
Mean SD
Mean SD Alverson et al., 1983 [10 ] Ascending Aorta M mode trailing edge parasternal long axis Ascending Aorta unguided CW doppler high suprasternal view no 1–5 days 8 221 56 14 236 47
Walther et al., 1985 [6 ] Aortic Root M mode leading edge parasternal long axis Ascending Aorta unguided CW doppler high suprasternal view no 1–5 days 59 260 35 62 230 30
Hirsimäki et al., 1988 [16 ] Aortic Root M mode parasternal short axis Ascending Aorta unguided CW doppler high suprasternal view no 24 hours 22 273 59 Winberg et al., 1989 [17 ] Ascending Aorta M mode trailing edge parasternal long axis Ascending Aorta unguided CW doppler high suprasternal view no 24 hours 16 187 35 Walther et al., 1990 [18 ] Ascending aorta 2D internal diameter parasternal long axis Ascending Aorta unguided CW doppler high suprasternal view no unknown 26 250 41 16 250 41 Agata et al., 1991 [19 ] Ascending Aorta M mode leading edge parasternal long axis Ascending Aorta 2D guided PW doppler apical view no 24 hours 34 245 56 Mandelbaum et al., 1991 [20 ] Aortic Annulus 2D internal diameter parasternal long axis Ascending Aorta 2D guided PW doppler apical view no 5-48 hours 18 150 40 Evans and Kluckow, 1996 [7 ] Ascending Aorta 2D internal diameter parasternal long axis Ascending Aorta 2D guided PW doppler apical view <20° 24 hours 20 233# 55 Evans et al., 1996 [7 ] Ascending Aorta 2D internal diameter parasternal long axis Ascending Aorta 2D guided PW doppler apical view <20° 4 days 20 282# 60 Pladys et al., 1999 [21 ] Ascending Aorta M mode trailing edge parasternal long axis Ascending Aorta 2D guided PW doppler subcostal view no 24 hours 17 245* 60 Tsai-Goodman et al., 2001 [22 ] Aortic Root M mode trailing edge parasternal long axis Ascending Aorta unguided CW doppler high suprasternal view no 24 hours 10 241 16 241 Murase et al., 2002 [23 ] Ascending Aorta 2D internal diameter parasternal long axis Ascending Aorta 2D guided PW doppler high suprasternal view no 24 hours 11
37 Groves et al., 2008 [24 ] Ascending Aorta 2D internal diameter parasternal long axis Ascending Aorta 2D guided PW doppler apical view <20° 24 hours 43 288× 80 Sloot et al., 2010 [25 ] Aortic Annulus 2D internal diameter parasternal long axis Ascending Aorta 2D guided PW doppler subcostal view no 7 days 57 296 74