Low-Flow Nasal Cannula Hydrogen Therapy.
Motoaki Sano, Kohsuke Shirakawa, Yoshinori Katsumata, Genki Ichihara, Eiji Kobayashi · Journal of clinical medicine research · 2020
Research-use notice
Independent study record
Each H2HUBB study page organizes source-linked research details for educational use. Interpretation should remain proportional to the study design, population, controls, and limitations.
H2HUBB TAKEAWAY
Inhalation of 100% H₂ produced by an H₂ gas generator, even at low-flow rates, can increase blood H₂ concentrations to levels that previous non-clinical and clinical studies demonstrated to be therapeutically effective. This source-grounded publication contributes evidence relevant to molecular hydrogen and is retained in a transparent general research category when a more specific study design is not supported by the indexed record.
What the Findings Mean
H2HUBB reviewed how inhaled hydrogen gas was evaluated in this publication and summarizes the source-grounded findings below. During the first hour of H₂ inhalation, the mean (standard error (SE)) H₂ concentrations and saturations in the arterial blood of the three pigs were 1,560 (413) nL/mL and 8.85% (2.34%); 1,190 (102) nL/mL and 6.74% (0.58%); and 1,740 (181) nL/mL and 9.88% (1.03%), respectively.
What Effects Did Molecular Hydrogen Have?
Source-reported hydrogen concentration: 100% source-reported H₂ gas concentration; Source-reported hydrogen exposure: 100% source-reported H₂ gas concentration; 250 mL/min H₂ flow; via nasal cannula. During the first hour of H₂ inhalation, the mean (standard error (SE)) H₂ concentrations and saturations in the arterial blood of the three pigs were 1,560 (413) nL/mL and 8.85% (2.34%); 1,190 (102) nL/mL and 6.74% (0.58%); and 1,740 (181) nL/mL and 9.88% (1.03%), respectively. The authors concluded that inhalation of 100% H₂ produced by an H₂ gas generator, even at low-flow rates, can increase blood H₂ concentrations to levels that previous non-clinical and clinical studies demonstrated to be therapeutically effective.
Why These Findings Matter
These findings add evidence supporting molecular hydrogen's therapeutic potential within the biological process and outcomes directly measured in this publication and contribute to the growing body of molecular-hydrogen research.
How Strong Is This Evidence?
H2HUBB classifies this publication as other research and interprets only the outcomes directly supported by the source record.
Technical Study Details
H2HUBB classifies this publication as other research with other supported evidence. The hydrogen delivery method was inhaled hydrogen gas. The source-reported hydrogen concentration was 100% source-reported H₂ gas concentration.
Limitations and Safety
No separate limitations or safety findings were identified in the current-study source text available to H2HUBB.
Original Study and H2HUBB Research Context
H2HUBB presents this source-grounded research record as one contribution to the broader molecular-hydrogen evidence base.
What the Researchers Studied
The available source identifies this publication as other research. A more specific population or model was not separately reported in the source text available to H2HUBB.