Use of 50% Nitrous Oxide / 50% Oxygen Premix During Liver Biopsy of Focal Lesion

2014-08-27 03:31:54 | BioPortfolio


A 50% nitrous oxide / 50% oxygen premix is administrated to the patient during the realization of liver biopsy in order to relax him and to reduce his pain during this painful medical treatment. This single investigator centre and national clinical trial is done blindly : half of patients will receive 50% nitrous oxide / 50% oxygen premix and half of them a placebo gas (mixture of 50% oxygen and 50% nitrogen). 94 patients will be included in this clinical protocol.

Study Design

Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver, Investigator), Primary Purpose: Treatment


Liver Biopsy


Kalinox 170 bar, Mix of 50% oxygen and 50% nitrogen


Beaujon hospital




Air Liquide Santé International

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:31:54-0400

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Medical and Biotech [MESH] Definitions

A hemoglobin-like oxygen-binding hemeprotein present in the nitrogen-fixing root nodules of leguminous plants. The red pigment has a molecular weight approximately 1/4 that of hemoglobin and has been suggested to act as an oxido-reduction catalyst in symbiotic nitrogen fixation.

Conducting a biopsy procedure with the aid of a MEDICAL IMAGING modality.

Six-membered heterocycles containing an oxygen and a nitrogen.

A group of gram-negative bacteria consisting of rod- and coccus-shaped cells. They are both aerobic (able to grow under an air atmosphere) and microaerophilic (grow better in low concentrations of oxygen) under nitrogen-fixing conditions but, when supplied with a source of fixed nitrogen, they grow as aerobes.

Stable nitrogen atoms that have the same atomic number as the element nitrogen, but differ in atomic weight. N-15 is a stable nitrogen isotope.

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