A randomized double-blinded non-inferiority trial comparing fentanyl/midazolam versus pethidine/diazepam for pain relief during oocyte retrieval performed under conscious sedation

Conclusion: The fentanyl/midazolam group had significantly lower vaginal and abdominal pain levels during oocyte retrieval than the pethidine/diazepam group.
Source: Reproductive BioMedicine Online - Category: Reproduction Medicine Source Type: research