Table 2 Characteristics of oocytes in ICSI cycles

From: Correction to: Does timing in ICSI cycle affect oocyte quality and reproductive outcomes? A prospective study

Variable HCG-OPU  ≤ 36 h (n = 264) HCG-OPU > 36 h (n = 349) P value
OPU-DN ≤ 2 h (n = 141) OPU -DN > 2 h (n = 123) OPU-DN ≤ 2 h (n = 180) OPU-DN > 2 h (n = 169)
DN-ICSI ≤ 2 h (n = 101) DN-ICSI > 2 h (n = 40) DN-ICSI ≤ 2 h (n = 75) DN-ICSI > 2 h (n = 48) DN-ICSI ≤ 2 h (n = 119) DN-ICSI > 2 h (n = 61) DN-ICSI ≤ 2 h (n = 104) DN-ICSI > 2 h (n = 65)
Total number of oocytes aspirated (mean ± SD) 717 (7.1 ± 4.5) 330 (8.2 ± 5.3) 654 (8.7 ± 5.7) 461 (9.6 ± 6.8) 805 (6.8 ± 5.7)a 523 (8.6 ± 5.1) 959 (9.2 ± 7.3) 608 (9.3 ± 5.0)a 0.0006
Metaphase II oocytes (n) 5.7 ± 4.0 6.5 ± 4.7 6.8 ± 4.6 7.5 ± 5.1a 5.3 ± 5.0ab 6.6 ± 4.6 6.5 ± 5.5 7.0 ± 4.1b 0.004
Ratio of metaphase ΙΙ oocytes/total oocytes 0.8 ± 0.2 0.8 ± 0.2 0.8 ± 0.2 0.8 ± 0.2 0.8 ± 0.2 0.8 ± 0.2 0.7 ± 0.2 0.8 ± 0.2 0.05
Cytoplasm granulation (%) 23.7 ± 37.5 25.1 ± 40.1 31.3 ± 39.2 26.1 ± 40.0 26.8 ± 39.4 26.9 ± 38.0 36.5 ± 40.6 20.0 ± 35.9 0.09
Central granulation of cytoplasm (%) 7.4 ± 24.0 14.5 ± 33.5 13.6 ± 29.0 12.0 ± 29.8 13.0 ± 30.5 9.2 ± 24.3 9.6 ± 25.0 7.3 ± 22.1 0.7
Vacuole in cytoplasm (%) 6.2 ± 20.8 4.0 ± 16.5 2.0 ± 8.7 1.3 ± 5.6 2.0 ± 10.5 5.5 ± 15.7 5.2 ± 17.3 8.8 ± 21.4 0.05
SER clustering (%) 0.6 ± 3.4 2.6 ± 15.8 0.8 ± 7.2 2.4 ± 14.6 3.2 ± 12.2 5.1 ± 19.0 2.0 ± 11.7 2.0 ± 10.7 0.2
Inclusion body (%) 20.4 ± 34.9 9.6 ± 25.0 19.9 ± 35.5 13.8 ± 29.2 15.7 ± 30.0 24.5 ± 34.2 25.8 ± 37.3 28.2 ± 37.6 0.01
Amorph oocyte (%) 2.1 ± 7.5 4.9 ± 16.9 6.5 ± 16.1 4.1 ± 9.0 5.0 ± 17.5 2.3 ± 7.0 5.9 ± 18.5 3.5 ± 15.1 0.2
Oval shaped oocyte (%) 0.8 ± 4.9 0.1 ± 0.8 1.7 ± 7.2 0.7 ± 4.8 2.4 ± 12.8 0.7 ± 3.0 0.9 ± 5.7 1.6 ± 6.1 0.7
Dark oocyte (%) 0 0 0.1 ± 1.1 0.3 ± 2.1 0.6 ± 4.9 0 0 0 0.2
Extended PVS (%) 30.7 ± 39.5 35.8 ± 42.1 26.7 ± 35.6 23.2 ± 34.3 39.8 ± 42.5 29.6 ± 38.7 39.8 ± 41.5 27.1 ± 39.1 0.05
Granulated PVS (%) 19.7 ± 36.5 23.1 ± 37.4 21.4 ± 35.0 19.5 ± 34.1 24.0 ± 38.9 22.5 ± 34.7 29.2 ± 38.6 24.2 ± 39.1 0.4
Multiple fragmented PB (%) 47.2 ± 41.7 34.5 ± 38.9 45.6 ± 39.9 37.8 ± 39.9 37.0 ± 39.7 50.0 ± 38.7 43.5 ± 40.2 50.3 ± 39.7 0.1
Thin ZP (%) 2.6 ± 14.4 7.1 ± 21.4 5.1 ± 18.7 3.0 ± 14.2 3.4 ± 17.4 5.10 ± 17.6 0.2 ± 1.6 2.5 ± 13.8 0.1
Thick ZP (%) 1.9 ± 11.6 4.4 ± 19.5 1.8 ± 12.1 2.9 ± 15.1 3.9 ± 18.5 0 0.2 ± 2.5 3.9 ± 18.5 0.4
Double fragmented PB (%) 0.4 ± 3.3 1.6 ± 9.5 0.5 ± 4.6 0.3 ± 1.5 0.7 ± 5.2 0.5 ± 3.7 1.6 ± 10.7 1.8 ± 12.5 0.9
Huge PB (%) 0a 0 0b 0c 0.04 ± 0.38d 0.18 ± 1.42 0e 2.24 ± 12.78abcde 0.002
AOQI 1.6 ± 1.1 1.7 ± 1.3 1.8 ± 1.1 1.5 ± 1.0 1.8 ± 1.1 1.8 ± 1.0 2.0 ± 1.2 1.8 ± 1.3 0.3