Skip to main content

Table 2 Controlled ovarian stimulation, embryological data and IVF outcome

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)  
Gonadotropin total dose (IU) 2255 ± 1065 2178 ± 863 2205 ± 1099 2283 ± 1070 2390 ± 981 ns
n. of retrieved oocytes 8.7 ± 5.2 9.7 ± 5.3 8.5 ± 5.2 8.6 ± 5.1 8.9 ± 5.3 ns
n. of fertilized oocytes 5 ± 2.6 5.7 ± 2.7 5 ± 2.6 5 ± 2.6 5.1 ± 2.5 ns
endometrial thickness (mm) 10.5 ± 2.6 9.7 ± 2.2 10.0 ± 2.5 11.0 ± 2.5 11.7 ± 3.0 ns
n. of transferred embryos/ET 1.9 ± 0.5 1.9 ± 0.5 1.9 ± 0.5 1.9 ± 0.6 1.9 ± 0.6 ns
Mean embryo score 8.1 ± 1.8 7.9 ± 1.8 8.2 ± 0.7 8.0 ± 0.8 8.1 ± 0.8 ns
n. of top scored embryos/ET 0.5 ± 0.8 0.9 ± 1.4 0.5 ± 0.8 0.5 ± 0.8 0.4 ± 0.7 ns
n. of pregnancies 476 24 227 186 39  
CPR/ET (%) 40.2 40.7 41.4 43.4 26.4* 0.003
Implantation rate (IR) 19.9 19.7 20.9 20.9 12.9* 0.02
Abortion rate (AR) 21.4 42.1 17.9 22.0 26.5 ns
Ongoing pregnancies at 10 W 374 14 187 145 29  
Ongoing PR/ET 31.6 23.7 34.1 33.8 19.6 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).
  2. *significance level of this subgroup vs. all others.