Table 1 Results of the IMSI vs. ICSI procedure in couples with poor embryo development - all embryos arrested following a prolonged 5-day culture in previous cycles of ICSI.
| Â | Method of in vitrofertilization | |||
|---|---|---|---|---|
IVF outcome parameters | IMSI group | ICSI group | ||
| Â | previous ICSI | current IMSI | previous ICSI | current ICSI |
No. of couples | 20 | 20 | 37 | 37 |
Average female age (years) | 34.7 ± 4.02 | 35.8 ± 4.36 | 32.0 ± 4.04 | 32.9 ± 4.48 |
No. of injected oocytes (%) | 158 (74.9%) | 121 (75.1%) | 227 (80.2%) | 235 (79.3%) |
No. of fertilized oocytes (zygotes) (%) | 86 (54.4%) | 62 (51.2%) | 129 (56.8%) | 124 (52.7%) |
No. of triploid zygotes (%) | 3 (1.9%) | 0 (0%) | 3 (1.1%) | 3 (1.2%) |
Average no. of embryos per cycle | 2.6 ± 6.21 | 3.1 ± 3.45 | 2.8 ± 6.94 | 3.3 ± 3.29 |
No. of blastocysts (%) | 0 (0%) | 16 (26.0%) | 0 (0%) | 24 (19.3%) |
No. of blastocysts pr cycle | 0 | 0.80 | 0 | 0.65 |
No. of arrested embryos - morula (%) | 26 (30.2%) | 17 (27.4%) | 41 (31.7%) | 25 (19.1%) |
No. of embryos arrested prior to the morula stage (%) | 44 (51.2%) | 29 (47.0%) | 88 (68.2%) | 75 (60.5%) |
No. of cycles with at least one blastocyst (%) | 0 (0%) | 10 (50.0%) | 0 (0%) | 13 (35.1%) |
No. of cycles with all embryos arrested (%) | 33 (100%) | 0 (0%) a | 46 (100%) | 10 (27.0%) b |
Implantation rate | 0% | 17.1% (6/35) | 0% | 6.8% (3/44) |
No. of pregnancies | 0 | 5 | 0 | 3 |
Pregnancy rate per cycle | 0% | 25.0% | 0 | 8.1% |