Prolonged Disorders of Consciousness
A clinical state in which a patient fails to recover full consciousness beyond a defined period following acquired brain injury, encompassing vegetative and minimally conscious states.
Full Definition
Prolonged Disorders of Consciousness (PDOC) refers to conditions—including vegetative state and minimally conscious state—where a patient shows no or minimal signs of awareness for more than four weeks following acquired brain injury. In geriatric rehabilitation, PDOC poses unique assessment challenges because age-related sensory or motor deficits can mask residual awareness. Accurate diagnosis is critical because it directly informs rehabilitation intensity, family counselling, and medico-legal decisions regarding withdrawal of treatment. Editors should note that terminology has shifted away from 'persistent vegetative state' in contemporary clinical guidelines.
Usage
Usage note: Use the full form on first mention; acronym PDOC acceptable thereafter. Do not conflate with 'coma', which implies a shorter, more acute state.
In Context
- "The rehabilitation team initiated a structured PDOC assessment protocol to distinguish residual awareness from reflex responses in the 82-year-old patient." — Inpatient rehabilitation case note
- "Families should be counselled that a diagnosis of prolonged disorders of consciousness does not preclude all rehabilitative intervention." — Patient information leaflet