title: Development of pulmonary hypertension in adults after ventriculoatrial shunt implantation.
abstract: BACKGROUND
  The insertion of ventriculoatrial (VA) shunts for the treatment of hydrocephalus is thought to be associated with the development of pulmonary hypertension in adults.
  
  
  OBJECTIVE
  It was the aim of this study to describe the frequency and the clinical spectrum of pulmonary hypertension in adults with VA shunts.
  
  
  METHODS
  Patients with pulmonary hypertension were retrospectively evaluated from January 1999 to December 2006.
  
  
  RESULTS
  Among the 575 patients with pulmonary hypertension, 6 (mean age 42.5 +/- 8.3 years) were identified as having received a VA shunt. Mean pulmonary artery pressure for these patients was 53.3 +/- 14.9 mm Hg. The interval between shunt placement and the diagnosis of pulmonary hypertension was 9-27 years (median 16.5). While ventilation perfusion scans showed multiple bilateral perfusion defects in all patients, chest CT or pulmonary angiography demonstrated pulmonary thromboembolism in only 2 of the 6 patients. These 2 patients subsequently underwent pulmonary endarterectomy. Another patient required heart-lung transplantation because of severe pulmonary hypertension; lung histology showed prominent eccentric medial hypertrophy and intimal proliferation without evidence of thromboembolism. Contrary to earlier reports, outcomes were generally good, with a 100% survival rate for the first 8 years following diagnosis.
  
  
  CONCLUSIONS
  Severe pulmonary hypertension can develop in adult patients with VA shunts. Therefore, clinicians should consider pulmonary hypertension as a potential cause for respiratory symptoms in patients who have received VA shunts.
authors.affiliation: Department of Respiratory Medicine, University Medical Center, Hamburg-Eppendorf, Germany. skluge@uke.uni-hamburg.de
authors.forename: Stefan
authors.initials: S
authors.lastname: Kluge
authors.forename: Hans Jorg
authors.initials: HJ
authors.lastname: Baumann
authors.forename: Jan
authors.initials: J
authors.lastname: Regelsberger
authors.forename: Uwe
authors.initials: U
authors.lastname: Kehler
authors.forename: Barbara
authors.initials: B
authors.lastname: Koziej
authors.forename: Hans
authors.initials: H
authors.lastname: Klose
authors.forename: Ulf
authors.initials: U
authors.lastname: Greinert
authors.forename: Georg
authors.initials: G
authors.lastname: Kreymann
authors.forename: Andreas
authors.initials: A
authors.lastname: Meyer
mesh_terms: D000293:Adolescent; D000328:Adult; D002557:Cerebrospinal Fluid Shunts / Q000009:adverse effects*; D002648:Child; D015331:Cohort Studies; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000628:therapy; D006976:Hypertension, Pulmonary / Q000209:etiology* / Q000628:therapy; D008875:Middle Aged; D012189:Retrospective Studies; D016896:Treatment Outcome