Conclusion
COVID-19 PNEUMONIA
The results of this RCT suggest early PPT during three days, including airway clearance techniques, in the presence of excessive pulmonary secretion, and inspiratory hold breathing with emphasis to diaphragmatic breathing for hospitalized adult patients with a severe stage of COVID-19 pneumonia. Despite some recommendation, PPT seems to be safe and effective in the management of patients with severe COVID-19. The impact of early PPT on the mortality rate of these patients is currently indeterminate. Further researches with larger sample size are needed to evaluate the efficacy of PPT on COVID-19 patients with different severity stages.