Table 3 Pregnancy, delivery and neonatal outcomes of pregnant patients in the rescue ICSI and conventional ICSI groups

Pregnancy outcomes

 Clinical pregnancy, n (%)

68 (54.84)

232 (61.87)

52 (57.14)

180 (63.38)

 Single pregnancy, n (%)

33 (48.53)

127 (54.74)

26 (50.00)

101 (56.11)

 Twin pregnancy, n (%)

34 (50.00)

99 (42.67)

25 (48.08)

74 (41.11)

 Multiple pregnancy, n (%)

1 (1.47)

6 (2.59)

1 (1.92)

5 (2.78)

 Ectopic pregnancy per transfer, n (%)

2 (1.61)

3 (0.80)

1 (1.10)

2 (0.70)

 Multifetal pregnancy reduction, n (%)

2 (2.94)

9 (3.88)

4 (7.69)

5 (2.78)

 Implantation, n (%)

102/259 (39.38)

343/801 (42.82)

80/196 (40.82)

263/605 (43.47)

 Early miscarriage, n (%)

5 (7.35)

23 (9.91)

3 (5.77)

20 (11.11)

 Ongoing pregnancy per transfer, n (%)

63 (50.81)

209 (55.73)

49 (53.85)

160 (56.34)

 Live deliveries per transfer, n (%)^a

62 (50.41)

200 (53.48)

47 (51.65)

153 (54.06)

Delivery outcomes

 Twins, n (%)

22 (35.48)

74 (37.00)

18 (38.30)

56 (36.60)

 Singleton, n (%)

40 (64.52)

126 (63.00)

29 (61.70)

97 (63.40)

 Gestational days

267.68 ± 15.39

266.86 ± 15.34

266.83 ± 16.87

266.86 ± 14.90

 Preterm birth (< 37 wk), n (%)

14 (22.95)

44 (22.56)

10 (22.73)

34 (25.52)

 Very preterm birth (< 32 wk), n (%)

1 (1.64)

4 (2.05)

2 (4.55)

2 (1.32)

 Cesarean section, n (%)

41 (66.13)

141 (70.50)

30 (63.83)

111 (72.55)

 Vaginal deliveries, n (%)

21 (33.87)

59 (29.50)

17 (36.17)

42 (27.45)

 GDM, n (%)

8 (12.90)

22 (11.00)

5 (10.64)

17 (11.11)

Neonatal outcomes

 Live birth

84

274

65

209

 Male neonates, n (%)

46 (54.76)

132 (48.18)

34 (52.31)

98 (46.89)

 Female neonates, n (%)

38 (45.23)

142 (51.82)

31 (47.69)

111 (53.11)

 Birth weight (g)

2792.62 ± 571.77

2742.82 ± 598.32

2688.95 ± 540.02

2759.57 ± 615.58

 Male birth weight (g)

2794.57 ± 585.03

2803.58 ± 611.79

2649.76 ± 535.81

2856.94 ± 629.80

 Female birth weight (g)

2790.26 ± 563.11

2686.34 ± 581.98

2731.94 ± 550.17

2673.60 ± 592.33

 LBW (<2500 g), n (%)

23 (27.38)

84 (30.66)

18 (27.69)

66 (31.58)

 VLBW (<1500 g), n (%)

1 (1.19)

5 (1.82)

1 (1.54)

4 (1.91)

 SGA, n (%)

3 (3.57)

26 (9.49)

7 (10.77)

19 (9.09)

 Admission to NICU, n (%)

11 (13.10)

38 (13.87)

11 (16.92)

27 (12.92)

 Days at the NICU

10.09 ± 6.59

15.55 ± 13.47

19.91 ± 11.03

13.78 ± 14.15

 Birth defects, n (%)

2 (2.38)

4 (1.46)

1 (1.54)

3 (1.44)