Skip to main content

Table 2 Effect of blastocyst score on pregnancy outcome

From: Developmental stage on day-5 and fragmentation rate on day-3 can influence the implantation potential of top-quality blastocysts in IVF cycles with single embryo transfer

Different categories of advanced blastocysts Not implanted % (n) Implanted % (n) P value
Total BL3 (n = 81) (BL3AA, BL3AB, BL3BA, BL3BB) 70.3% (57) 29.3%(24)  
Total BL4 (n = 122) (BL4AA, BL4AB, BL4BA, BL4BB) 43.4% (53) 56.5%(69) p < 0.05
Top quality BL3 (n = 76) (BL3AA, BL3AB) 65.4% (53) 28.3%(23)  
Top quality BL4 (n = 109) (BL4AA, BL4AB) 36.8% (45) 52.4%(64) p < 0.05
Individual implantation rate of advanced blastocysts    
   • BL3AA (n = 62) 67.7% (42) 32.3% (20)  
   • BL3AB (n = 14) 78.6% (11) 21.4% (3)  
   • BL3BA (n = 2) 50% (1) 50% (1)  
   • BL3BB (n = 3) 100% (3) 0 P = 0.02
   • BL4AA (n = 107) 43% (46) 57% (61)  
   • BL4AB (n = 4) 25% (1) 75% (3)  
   • BL4BA (n = 6) 33.3% (2) 66.7% (4)  
   • BL4BB (n = 5) 80% (4) 20% (1)