Table 2.

Results for individual epididymides regarding sperm quality and in vitro fertilization after sperm collection by MESA and PESA

	Left epididymis					Right epididymis
	Sperm		IVF			Sperm		IVF
Experiment	Motilitya	Concentration (x106/mL)	No. of oocytes	No. of 2-cell embryos	% of 2-cell embryos	Motilitya	Concentration (x 106/mL)	No. of oocytes	No. of 2-cell embryos	% of 2-cell embryos
MESA
1	+	6.00	46	10	21.7	+	1.64	16	16	100.0
2	+	2.93	40	40	100.0	+	6.59	43	43	100.0
3	+	4.94	45	45	100.0	+	30.00	39	35	89.7
4	—	ND	ND	ND	ND	+	5.61	45	41	91.1
5	+	5.96	124	112	90.3	+	0.75	76	73	96.1
Mean ± 1 SD		3.44 ± 1.44	60.80 ± 40.25	41.40 ± 43.04	62.41 ± 37.79		7.55 ± 12.05	39.50 ± 21.42	34.67 ± 20.54	79.48 ±4.83
PESA
1	+	3.40	48	40	83.3	+	4.39	46	41	89.1
2	+	2.95	17	16	94.1	+	3.78	35	35	100.0
3	—	ND	ND	ND	ND	+	0.30	121	71	58.7
4	—	ND	ND	ND	ND	+	0.93	185	138	74.6
5	+	24.45	25	24	96.0	—	ND	ND	ND	ND
6	—	ND	ND	ND	ND	+	12.25	69	64	92.8
Mean ± 1 SD		10.27 ± 15.20	30.00 ± 5.66	26.67 ± 5.66	91.13 ± 1.34		4.33 ± 5.50	91.20 ± 65.39	69.80 ± 43.55	83.04 ± 18.60

ND, not done

^a+ indicates >60% to 80% of sperm were motile; – indicates <40% motile spermatozoa.