Hydrogen inhalation promotes recovery of a patient in persistent vegetative state from intracerebral hemorrhage: A case report and literature review

Figure 2 Schematic overview of the clinical progress in the improvement in Coma Recovery Scale-Revised scores and the recovery from persistent vegetative state in this patient. The patient failed to respond to brain surgery and brain protection and rehabilitation for nearly 2 mo. One month after hydrogen gas inhalation treatment, the Coma Recovery Scale-Revised (CRS-R) score of the patient increased from 3 to 6. After 2 more months of treatment, the patient’s consciousness was significantly restored and showed greater subsequent improvements with significantly improved motor function, the ability to speak and express requests, and general health. By the end of the 5-mo treatment period with hydrogen gas inhalation, the patient had nearly recovered and stabilized to a normal consciousness state with a CRS-R score of 22. CRS-R: Coma Recovery Scale-Revised.