Table 2.
Comparison of outcomes of frozen cleaved embryo transfer of the control, AH40M and AH50% groups
| Control | AH40M | AH50% | |
|---|---|---|---|
| No. of cycles for transfer | 30 | 40 | 31 |
| No. of blastocysts transferred | 52 | 62 | 52 |
| Morphology scores of blastocysts | |||
| AA (%) | 22 (42) | 25 (40) | 20 (38) |
| AB (%) | 10 (19) | 12 (20) | 10 (19) |
| BB (%) | 20 (39) | 25 (40) | 22 (42) |
| Mean no. of blastocysts transferred ± SD | 1.7 ± 0.5 | 1.6 ± 0.5 | 1.7 ± 0.5 |
| No. of clinical pregnancies (%) | 5 (17)a | 17 (43)b | 23 (74)c |
| No. of multiple pregnancies (%) | 0 (0) | 0 (0) | 4 (17) |
| No. of embryos implanted (%) | 5 (10)a | 17 (27)b | 27 (52)c |
| No. of deliveries (%) | 4 (13)a | 15 (38)b | 20 (65)c |
Morphology scores of blastocysts: e.g. AA = inner cell mass grading was A and trophectoderm grading was A, for details see “Materials and methods.”
Control No assisted hatching, AH40M 40 μm opening of the zona pellucida by laser assisted hatching at the blastocyst stage, AH50% 50% of the zona pellucida opening by laser assisted hatching at the blastocyst stage
a–cValues with different alphabet in the same column differ significantly (P < 0.05)