Effects of adjuvant ozone autohemotherapy combined with routine treatment on clinical and paraclinical features of mechanically ventilated COVID-19 patients in the intensive care unit: a pilot randomized controlled trial.

Until the availability of an effective and practical vaccine, there is a serious need to recognize alternative treatments for coronavirus disease 2019 (COVID-19). This study aimed to determine whether major ozonated autohemotherapy (MOAH) can improve the clinical and paraclinical parameters in critically-ill patients with COVID-19 requiring mechanical ventilation. In this controlled trial, we enrolled 40 critically ill COVID-19 patients receiving invasive mechanical ventilation.