Total fertilization failure and idiopathic subfertility

Table 2 Treatment characteristics

	IVF after unsuccessful IUI (n = 45)	IVF immediately (n = 58)	p-value
Number of canceled cycles	6 (13%)^a	2 (3%)^b	0.15
Total number of follicles^c	11.1 (7.6)	11.7 (6.0)	0.67
Total number of oocytes retrieved	9.2 (6.3)	9.7 (5.9)	0.66
Total progressively motile sperm count (×10⁶)^d	21.3 (21.7)	26.3 (22.8)	0.28
Total number of embryos	6.4 (4.6)	5.5 (3.9)	0.35
Fertilization rate	68 (27.7)	63 (34.7)	0.48
Number of TFF	2/39 (5%)	7/56 (13%)	0.23
Positive pregnancy test (hCG>5IU/l)	11 (25%)	12 (21%)	0.64
Clinical pregnancy rate	8 (18%)	11 (19%)	0.88
Ongoing pregnancy rate	6 (13%)	9 (16%)	0.76

Values are mean ± standard deviation unless indicated otherwise
^a 5 patients cancelled due to absence of ovarian response. 1 patient cancelled due to hyperstimulation
^b both cancelled due to absence of ovarian response
^c follicles > 10 mm on day of hCG administration
^d after processing of semen samples used for insemination
IVF = in vitro fertilization, IUI = intrauterine insemination, TFF = total fertilization failure

ISSN: 1477-7827