. 2023 Jun 28;28:55. doi: 10.4103/jrms.jrms_808_22

Table 2.

Estimated percentiles for ductus venosus Doppler velocity indices across gestational ages

Gestational age* (week)	n	DVPI			DVRI^†			DV S/A ratio^‡

		5^th	50^th	95^th	5^th	50^th	95^th	5^th	50^th	95^th
12	160	0.76	1.03	1.36	0.66	0.78	0.88	2.54	3.87	6.68
13	207	0.81	1.06	1.39	0.61	0.78	0.88	2.57	3.95	6.70
14	48	0.76	1.10	1.45	0.61	0.78	0.92	2.41	3.88	6.94
Total	415	0.80	1.06	1.39	0.62	0.78	0.88	2.57	3.90	6.70

*Gestational age was estimated based on CRL; ^†DVRI had 3, 12 and 1 missing values within 12, 13 and 14 gestational weeks, respectively;. ^‡S/A ratio had two, five, and three missing values within 12, 13 and 14 gestational weeks, respectively. DV=Ductus venosus; DVPI=DV pulsatility index; DVRI=DV resistance index; CRL=Crown-rump length; S/A=S-wave maximum velocity/A-wave minimum velocity