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Table 11 Blood flow parameters of the umbilical arteries in normal gestation and threatened abortion groups during 40 to 50 days

From: Doppler evaluation of maternal vessels in normal gestation and threatened abortion in canines

Sr. No Parameter 40 to 50 days ‘t’ Cal ‘t’ Table
Normal gestation (n = 20) Threatened abortion (n = 20)
1 SPV (cm/sec) 32.63 ± 9.14 37.74 ± 6.69 0.83 2.02
2 EDV (cm/sec) 03.37 ± 2.28 04.11 ± 0.74 1.33
3 PI 01.44 ± 0.18 01.43 ± 0.22 0.23
4 RI 00.89 ± 0.07 00.88 ± 0.03 0.53