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Table 2 Embryo developmental kinetics according to the type of oocyte maturation triggering agent

From: GnRH agonist triggering affects the kinetics of embryo development: a comparative study

 

GnRHa triggering (Group 1 n:252)

hCG triggering (Group 2 n:487)

P

tPB2

4.5 (1.7)

5.4 (1.8)

0.000

tPNf

24.8 (5.2)

26.7 (5.2)

0.000

t2 (h)

32.2 (6.2)

34.3 (5.5)

0.009

t3 (h)

38.5 (6.0)

39.9 (5.1)

0.027

t4 (h)

40.6 (6.3)

41.7 (5.3)

0.101

t5 (h)

47.0 (7.9)

50.8 (7.1)

0.000

t6 (h)

52.1 (7.3)

54.6 (6.2)

0.002

t7 (h)

57.5 (8.2)

57.8 (5.2)

0.871

t8 (h)

63.2 (6.3)

62.5 (5.1)

0.589

t9+ (h)

64.5 (5.9)

64.9 (4.8)

0.996

cc2 (h)

6.9 (5.9)

6.3 (4.1)

0.321

s2 (h)

2.6 (4.2)

2.0 (2.2)

0.151

cc3 (h)

9.7 (6.1)

11.5 (4.5)

0.006

t4 – t2 (h)

9.5 (6.4)

8.6 (4.6)

0.071

t8 – t4 (h)

24.3 (6.3)

23.5 (5.1)

0.251

  1. Results are presented as means(SD) when appropriate
  2. t time, h hour, t PB2 appearance of second polar body t PNf both pronuclei faded, cc cell cycle s, synchrony