| Methods |
Random, method unclear (couples randomised)
Blinding unclear
Parallel trial
Group 1: 29 couples
Group 2: 30 couples
No withdrawals or dropouts |
| Participants |
Inclusion: Men with congenital bilateral absence of the vas deferens (CBAVD) or unreconstructable vasal obstruction (failed vasovasostomy, failed epididymovasostomy)
Exclusion: not specified
Age: Group 1 men 34±2.3, women 28±2.1;
Group 2 men 36±1.8, women 31±2.5
Location: Nagoya, Japan |
| Interventions |
Group (1) Microsurgical epididymal sperm aspiration (MESA)
Group 2) Epididymal micropuncture with perivascular nerve stimulation followed by aspiration of fluid
Duration: 1 cycle |
| Outcomes |
Fertilisation rate per couple
Pregnancy rate per couple (ultrasound)
Sperm parameters (density, motility, morphology) |
| Notes |
|
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Allocation concealment? |
Unclear risk |
B ‐ Unclear |
