Life expectancy of children in a persistent vegetative state

Area of Science:

• Neurology
• Pediatrics
• Public Health

Background:

• Persistent vegetative state (PVS) is characterized by wakeful unconsciousness with preserved autonomic functions.
• Limited data exists on the lifespan of children diagnosed with PVS.
• Understanding factors influencing survival is crucial for patient care and resource allocation.

Purpose of the Study:

• To examine the survival duration of children residing in California with PVS.
• To determine the impact of age, etiology, and type of residence on PVS patient survival.
• To provide accurate survival data for pediatric PVS cases.

Main Methods:

• Retrospective review of 155,851 developmentally disabled California residents' data using the Client Development Evaluation Report (CDER).
• Identified 847 patients meeting specific PVS criteria (lack of interaction, sensory/language function, motor skills, and continence).
• Employed a product limit survival model to analyze survival curves and median survival times.

Main Results:

• Median survival varied significantly by age group, increasing with age (e.g., <1 year: 2.6 years, >=19 years: 9.9 years).
• Etiology showed variable median survival (3.0-8.6 years) without a clear correlation to duration.
• For patients under 18, median survival differed by residence: own home (4.5 yrs), institutions (5.2 yrs), skilled nursing/private hospital (3.2 yrs), and other community facilities (3.7 yrs).

Conclusions:

• Age is a significant factor in survival for children with PVS, with older age associated with longer survival.
• While etiology and residence type influence survival, their impact is less consistent than age.
• Findings highlight the need for individualized prognoses and care planning based on patient demographics and living situation.