Tricuspid Valve E/A Ratio

Rizzo G, Arduini D, Romanini C, Mancuso S.

Doppler echocardiographic assessment of atrioventricular velocity waveforms

In normal and small for gestational age fetuses.

Br J Obstet Gynaecol 1988;95(1):65-69

GA (wks)	50^th Percentile	5th Percentile	95th Percentile
20	0.65	0.47	0.84
21	0.67	0.49	0.85
22	0.68	0.5	0.87
23	0.7	0.51	0.88
24	0.71	0.53	0.89
25	0.72	0.54	0.9
26	0.73	0.55	0.91
27	0.74	0.56	0.92
28	0.75	0.57	0.93
29	0.76	0.57	0.94
30	0.76	0.58	0.95
31	0.77	0.59	0.95
32	0.77	0.59	0.96
33	0.78	0.59	0.96
34	0.78	0.6	0.96
35	0.78	0.6	0.97
36	0.78	0.6	0.97
37	0.78	0.6	0.97
38	0.78	0.6	0.97
39	0.78	0.6	0.97
40	0.78	0.6	0.96