Skip to main content

Table 3 Controlled ovarian stimulation and IVF outcome by number of transferred embryos

From: IVF outcome is optimized when embryos are replaced between 5 and 15 mm from the fundal endometrial surface: a prospective analysis on 1184 IVF cycles

 

All

EFD (mm)

p

  

<5

5-9.9

10-15

>15

 
 

(n = 1184)

(n = 59)

(n = 548)

(n = 429)

(n = 148)

 

n. of pregnancies All

476

24

227

186

39

 

SET

49

3

21

21

4

 

DET

427

21

206

165

35

 

CPR/ET (%) All

40.2

40.7

41.4

43.4

26.4*

0.003

SET

17.2

20.0

18.3

18.7

9.5

ns

DET

44.3

42.9

45.3

48.1

30.2*

0.02

Implantation rate (IR) All

19.9

19.7

20.9

20.9

12.9*

0.02

SET

18.2

22.2

19.6

19.5

9.7

ns

DET

20.4

15.6

21.8

21.5

13.8*

0.04

Abortion rate (AR) All

21.4

42.1

17.6

22.0

26.5

ns

SET

22.4

0

19.0

33.3

0

ns

DET

21.3

47.6

17.5

20.6

28.6

ns

Ongoing pregnancies at 10 W All

374

14

187

145

29

 

SET

38

3

17

14

4

 

DET

336

11

170

131

25

 

Ongoing PR/ET All

31.6

23.7

34.1

33.8

19.6

ns

SET

13.4

20.0

14.8

12.5

9.5

ns

DET

37.3

25.0

39.3

41.3

23.6

ns

  1. Patients were subgrouped according to the site at which embryos were transferred (EFD = distance between the hyperecogenic spot and the basal layer of the endometrial fundus) and according to the number of transferred embryos (SET = single embryo transfer; n = 284; DET = double embryo transfer; n = 900).
  2. *significance level of this subgroup vs. 5–9.9 and 10–15.
Back to article page

Reproductive Biology and Endocrinology

ISSN: 1477-7827

Contact us