RESEARCH ARTICLES

1. The effect of dexmedetomidine on decrease of cough,hemodynamic parameters and Ramsay score versus lidocaine during general anesthesia:a randomized clinical trial
2. Evaluation of audible leak versus pressure volume loop closure for polyvinyl chloride cuff and polyurethane microcuff in endotracheal tube inflated with air:a prospective randomized study
3. High-flow hydrogen inhalation might suppresses the immune function of middle-aged participants:a selfcontrolled study
4. Hyperbaric oxygen therapy decreases mortality due to Fournier’s gangrene:a retrospective comparative study
5. Evaluation of the toxic effects of ammonia dispersion:consequence analysis of ammonia leakage in an industrial slaughterhouse

REVIEWS

1. Therapeutic effects of hyperbaric oxygen:integrated review
2. A new mechanistic approach for the treatment of chronic neuropathic pain with nitrous oxide integrated from a systems biology narrative review
3. The role of nitric oxide in peptic ulcer:a narrative review

COMMENTARY

1. Laparoscopic surgeries and carbon dioxide pneumoperitoneum during COVID-19 pandemic:problems and solutions