title: Management of a locked Strata valve.
abstract: The PS Medical Strata valve is a programmable shunt valve used in the treatment of hydrocephalus that allows for noninvasive changes in the pressure setting using a magnet. The Strata valve is sensitive to magnetic fields, and reprogramming is frequently necessary after MR imaging. A known but rare complication of the Strata valve is that the rotor can become locked, causing shunt malfunction. This complication can only occur in a first generation Strata valve.
authors.affiliation: Division of Neurosurgery, Foothills Medical Centre and Alberta Children's Hospital, University of Calgary, Calgary, Alberta, Canada.
authors.forename: Kelly J
authors.initials: KJ
authors.lastname: Bullivant
authors.forename: Alim P
authors.initials: AP
authors.lastname: Mitha
authors.forename: Mark G
authors.initials: MG
authors.lastname: Hamilton