🔬 Discovery

Normal-pressure hydrocephalus and the Hakim valve

Hidrocefalia normotensiva y válvula de Hakim

Date
c. 1960-1965 · confidence medium
Place
San Juan de Dios Hospital, Bogotá, Colombia
Credited to
Salomón Hakim (with Raymond Adams)
Field
Life & health

What was discovered

The Colombian neurosurgeon described a hydrocephalus with normal cerebrospinal-fluid pressure, treatable by shunting, and designed a pressure-regulated valve (the Hakim valve). This made an apparently irreversible dementia treatable.

The key paper (Hakim and Adams, 1965) was published from Boston's Massachusetts General Hospital; the initial observation and valve design are credited to Hakim in Bogotá around 1957-1964.

What it led to

  • Surgical treatment of a reversible dementia
  • Adjustable ventriculoperitoneal shunt valves
  • Geriatric neurology

Links

Sources✓ verified 2026-11-04