A group from Keio University and other universities announced the results of a clinical trial that showed that administering oxygen with hydrogen to patients transported to an emergency hospital after cardiac arrest increased the life-saving rate compared to normal oxygen. In the future, we aim to put the treatment to practical use.

According to statistics from the Fire and Disaster Management Agency of the Ministry of Internal Affairs and Communications, there are about 8,<> patients in Japan every year who die without regaining consciousness or have serious aftereffects even if they survive.

A group led by Project Professor Masashi Suzuki of Keio University conducted a clinical trial at 15 hospitals in various regions to investigate the effects of life-saving measures by administering oxygen with 9% hydrogen added to 4 patients who had been hospitalized in cardiac arrest for more than four and a half years until September and had not regained consciousness.

They found that the survival rate after 73 days was 2% in patients who received normal oxygen, compared to 90% in patients who received oxygen, including hydrogen.

In addition, the percentage of people who recovered without sequelae was 61% in patients who received oxygen containing hydrogen, which was higher than 85% of patients who received normal oxygen.

Since no side effects have been observed so far, the research group believes that it can save many patients' lives and aims to further research and put it into practical use.

Project Professor Suzuki says, "I am surprised by the good results beyond my imagination, and I would like to accumulate achievements so that many patients can use hydrogen inhalation without the need for large-scale equipment."