Table 9

Doppler maximum velocities (m/s) on days 0–3 in relation to birth weight

Birth weight (g)	n	Ascending aorta	Descending aorta	Pulmonary artery	Mitral valve	Triscuspid valve
500 to 1000	20	1.01	0.80	0.58	0.36	0.40
		0.64 to 1.38	0.41 to 1.19	0.25 to 0.81	0.16 to 0.56	0.22 to 0.58

1000 to 1499	27	1.06	0.85	0.57	0.44	0.42
		0.57 to 1.55	0.42 to 1.28	0.31 to 0.83	0.22 to 0.66	0.24 to 0.60

1500 to 1999	12	1.21	0.93	0.62	0.44	0.44
		0.64 to 1.78	0.61 to 1.25	0.24 to 1.00	0.23 to 0.65	0.22 to 0.66

2000 to 2499	2	1.20	0.80	0.55	0.46	0.41