In their meta-analysis, the researchers systematically reviewed 25 randomized controlled trials of more than 16,000 adult patients that compared the use of liberal (supplemental oxygen) and conservative oxygen (room air) therapies. They concluded that for every 71 patients treated with excessive oxygen, an additional death occurs in hospital. The study's findings challenge the widely held belief that giving patients oxygen therapy is harmless. (Shutterstock)"We need clear guidelines and updated guidelines on how to use oxygen and when to use oxygen," Chu told CBC News. 'A practice-changing study'Cardiologist John William McEvoy believes the results will likely lead to a reconsideration of guideline recommendations around supplemental oxygen.

Source: CBC News April 28, 2018 12:56 UTC