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Back| Criteria | US Standards | Chinese Standards |
|---|---|---|
| Cognition | Lack of awareness of self and environment, inability to interact with others | Loss of cognitive function, no conscious activity, inability to follow commands |
| Language | Lack of comprehension and expression | Inability to understand and express language |
| Eye Movement | Lack of sustained, reproducible, purposeful, or voluntary behavioral responses to visual, auditory, tactile, or noxious stimuli | Can open eyes automatically or in response to stimuli, may have purposeless eye tracking movements |
| Reflexes | Brainstem reflexes (pupillary light reflex, oculocephalic reflex, corneal reflex, vestibulo-ocular reflex, and gag reflex) and spinal reflexes are partially or fully retained | |
| Bladder and Bowel Control | Incontinence | |
| Sleep | Presence of sleep-wake cycles | Presence of sleep-wake cycles |
| Vital Signs | Preservation of hypothalamic and brainstem autonomic functions | Basic preservation of hypothalamic and brainstem functions, maintaining spontaneous breathing and blood pressure |
Explanation
In 1994, the US Multisociety Task Force on Persistent Vegetative State proposed the US clinical diagnostic criteria for vegetative state. In 2001, the Chinese Society of Emergency Medicine revised the Chinese clinical diagnostic criteria for persistent vegetative state.
