RESEARCH ARTICLES

1. Change in saturation oxygen and hemodynamic responses by adding intrathecal dexmedetomidine vs.sufentanil to bupivacaine in patients undergoing dynamic hip screw operation:a randomized clinical trial
2. Two weeks of hydrogen inhalation can significantly reverse adaptive and innate immune system senescence patients with advanced non-small cell lung cancer:a self-controlled study
3. Impact of hydrogen-rich gas mixture inhalation through nasal cannula during post-exercise recovery period on subsequent oxidative stress,muscle damage,and exercise performances in men
4. Two-week continuous supplementation of hydrogenrich water increases peak oxygen uptake during an incremental cycling exercise test in healthy humans:a randomized,single-blinded,placebo-controlled study
5. Retrospective observational study of intramuscular oxygen-ozone therapy for the treatment of neck pain:cervical paravertebral injection
6. Role of methemoglobin and carboxyhemoglobin levels in predicting COVID-19 prognosis:an observational study
7. A randomized single-blinded,parallel-arm group feasibility trial evaluating role of pectoral nerve block on serum vascular endothelial growth factor levels in patients undergoing unilateral modified radical mastectomy

REVIEWS

1. Hydrogen sulfide therapy:a narrative overview of current research and possible therapeutic implications in future
2. Ozone therapy a new vista in dentistry:integrated review
3. A narrative review of hydrogen-oxygen mixture for medical purpose and the inhaler thereof

COMMENTARY

1. Evidence that gaseous anesthesia may be due to neuronal hypoxia