Nitrous Oxide vs Lidocaine vs No-analgesic for In-office Hysteroscopy: A Randomised Clinical Trial.

CONCLUSION: INO was as effective as lidocaine-1% in pain control for in-office hysteroscopy and better tolerated. The no-analgesic group presented the poorer results, thus the least recommended clinical option. PMID: 33528862 [PubMed - as supplied by publisher]

https://www.ncbi.nlm.nih.gov/pubmed/33528862?dopt=Abstract

Source: BJOG : An International Journal of Obstetrics and Gynaecology - February 2, 2021 Category: OBGYN Authors: Solano JA, Del Valle C, Rodríguez-Miguel A, de Abajo FJ, Delgado JJ, González J, Fernández Muñoz L, Zapico Á Tags: BJOG Source Type: research