Table 2

Comparisons of laser-assisted versus conventional ICSI outcomes according to zona breakage characteristics.


Normal zona (n = 19)
Difficult zona (n = 23)
Fragile zona (n = 6)



Laser
Conv
Laser
Conv
Laser
Conv

Percent 2pn
69.5 (71/106)a
62.9 (68/109)a
73.9 (125/167)a
75.6 (120/161)a
80.2 (30/38)a
79.4 (32/39)a
Percent oocyte degeneration
11.6 (13/106)a
16.1 (16/109)a
10.7 (18/167)a
9.6 (16/161)a
9.4 (3/38)a
12.5 (4/39)a
Cell number, day 3
5.6
5.5
6.0
5.6
5.1
4.8
Percent fragmentation, day 3
10.7
11.0
7.3
7.1
15.7
21.1
Percent compaction
43.2 (19/46)a
59.2 (29/50)a
57.5 (74/109)a
64.2 (69/102)a
29.2 (4/20)a
28.8 (9/26)a
Percent blastocyst
19.3 (7/46)a
30.9 (12/50)a
39.6 (52/109)a
44.7 (47/102)a
20.8 (3/20)a
17.9 (6/26)a

a Numbers in parentheses are total number of oocytes or embryos.