Table 3 Ultrasound parameters between two groups. (Subendometrial resistance index, subendometrial pulsatility index, subendometrial / uterine artery resistance index ratio and subendometrial / uterine artery pulsatility index ratio) at baseline, at day 6, 8 and 10 after controlled ovarian stimulation, at trigger day and at embryo transfer day. Mean values with standard deviation (SD). SE/Ut – Subendometrial / Uterine Arteries ratio; rhCG – recombinant Human chorionic gonadotropin

0.77 ± 0.17

0.71 ± 0.17

0.82

1.16 ± 0.25

1.01 ± 0.26

0.1

0.80 ± 0.09

0.76 ± 0.12

0.6

0.73 ± 0.12

0.77 ± 0.11

0.117

0.84 ± 0.17

0.73 ± 0.14

0.001

1.14 ± 0.20

0.98 ± 0.22

0.001

0.82 ± 0.10

0.77 ± 0.09

0.04

0.72 ± 0.14

0.68 ± 0.12

0.132

0.95 ± 0.16

0.79 ± 0.18

0.001

1.24 ± 0.20

1.03 ± 0.25

0.001

0.87 ± 0.13

0.81 ± 0.12

0.04

0.75 ± 0.15

0.73 ± 0.10

0.615

1.04 ± 0.718

0.88 ± 0.19

0.001

1.32 ± 0.23

1.12 ± 0.31

0.001

0.88 ± 0.11

0.82 ± 0.08

0.04

0.72 ± 0.10

0.75 ± 0.11

0.251

0.78 ± 0.16

0.65 ± 0.12

0.001

0.95 ± 0.14

0.83 ± 0.14

0.001

0.84 ± 0.14

0.73 ± 0.09

0.01

0.72 ± 0.12

0.68 ± 0.11

0.01

Embryo Transfer Day

0.99 ± 0.15

0.87 ± 0.12

0.001

1.19 ± 0.17

1.07 ± 0.20

0.001

0.84 ± 0.15

0.74 ± 0.10

0.001

0.66 ± 0.12

0.70 ± 0.08

0.018