1. Neurorestorative therapy in a hyperbaric oxygen chamber for ventilator-dependent patients (currently requires transfer to Peking University Rehabilitation Hospital): includes neurorestorative and consciousness-promoting treatment for postoperative coma following neurosurgical or neurological procedures while on mechanical ventilation in a hyperbaric oxygen chamber; support for difficult ventilator weaning due to respiratory dysfunction during recovery from pneumonia (including COVID-19 pneumonia); rehabilitation for hypoxic-ischemic encephalopathy caused by drowning, carbon monoxide poisoning, prolonged surgery, or after cardiopulmonary resuscitation; neurorestorative and arousal-promoting treatment for encephalitis; and comprehensive rehabilitation for ventilator-dependent patients with conditions such as motor neuron disease. 2. Critical care rehabilitation: rehabilitation for ICU-acquired weakness in patients receiving invasive or noninvasive mechanical ventilation or high-flow oxygen therapy, including swallowing electrical stimulation, diaphragmatic electrical stimulation, transcranial magnetic stimulation, and prone-position ventilation. 3. Comprehensive geriatric rehabilitation: integrated rehabilitative management for critically ill older adults, including blood pressure control, blood glucose management, thrombosis prevention and management, nutritional support, pain management, sleep optimization, gastrointestinal dysfunction, and fluid and electrolyte balance.