Evaluation of Analgesic Effect of Equimolar Mixture of Oxygen and Nitrous Oxide Inhalation During Percutaneous Biopsy of Focal Liver Lesions:

This study shows that patients receiving an EMONO had a higher analgesic control after percutaneous biopsy of focal liver lesions than patients in the placebo group. Moreover, acceptance of additional biopsies was higher in the EMONO group.