Evolution of thorax X-rays in ARDS patients with or without inhaled nitric oxide

In a pilot randomized placebo-controlled clinical trial of acute respiratory distress syndrome (ARDS) patients treated with inhaled nitric oxide (inhNO), we have measured a chest X-ray score during 10 days post-randomization for control (15 patients receiving usual care) and experimental (15 patients with usual care plus inhNO) and compare its evolution in time and between groups with lung function and outcome.