title: Combined videomanometric identification of abnormalities related to pharyngeal retention.
abstract: OBJECTIVE
  The authors determined the usefulness of performing videoradiography and pharyngeal solid-state manometry during barium swallow in dysphagic patients with pharyngeal retention.
  
  
  METHODS
  Results were retrospectively analyzed of simultaneous videoradiography and manometry examinations in 14 patients with retention of barium in the pharynx. Twelve age-matched patients without retention served as a control group.
  
  
  RESULTS
  Patients with retention regularly had less opening of the upper esophageal sphincter than patients without retention (7.6 vs 10.3 mm, respectively; P = .003). In patients with retention, the laryngeal elevation was lower (17.1 vs 23.8 mm, respectively; P = .001), and the resting pressure of the upper esophageal sphincter was significantly lower (42.4 vs 54.0 mm Hg, respectively; P = .04). The duration of upper esophageal sphincter relaxation was also shorter in patients with retention (374 vs 603 msec, respectively; P = .003). The peak pharyngeal contraction pressure was not significantly different.
  
  
  CONCLUSIONS
  The constrictors play a minor role in the conveyance of the bolus through the pharynx. Pharyngeal shortening could be the most important mechanism in bolus transport.
authors.affiliation: Department of Diagnostic Radiology, Malmö University Hospital, Lund University, Sweden.
authors.forename: R
authors.initials: R
authors.lastname: Olsson
authors.forename: J
authors.initials: J
authors.lastname: Castell
authors.forename: B
authors.initials: B
authors.lastname: Johnston
authors.forename: O
authors.initials: O
authors.lastname: Ekberg
authors.forename: D O
authors.initials: DO
authors.lastname: Castell
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001466:Barium Sulfate; D003287:Contrast Media; D003680:Deglutition Disorders / Q000503:physiopathology*; D005260:Female; D006801:Humans; D008297:Male; D008365:Manometry; D008875:Middle Aged; D010614:Pharynx / Q000503:physiopathology*; D012189:Retrospective Studies; D014741:Video Recording
chemical_list: D003287:Contrast Media; D001466:Barium Sulfate