title: Esophageal motility disorders in Mexican patients with Duchenne's muscular dystrophy.
abstract: OBJECTIVE
  Myopathies are entities that mainly involve striated muscle. In Duchenne's muscular dystrophy (DMD) there have been reported smooth muscle alterations in the pre-oral phase of swallowing, in gastric emptying, and pseudoobstruction. Nevertheless, esophageal motility alterations are not concluding. The objective of this work was to determine if there are motor esophageal alterations in this patients, and if this alterations are related to the clinical manifestations of disease.
  
  
  METHODS
  Nine consecutive patients with DMD (mean age 8, range 6-11 years; males) were evaluated, comparing clinical and manometric findings.
  
  
  RESULTS
  Esophageal manometry alterations were found in all patients, mainly simultaneous non-peristaltic waves (60.86%) of diminished amplitude, in both striated and smooth muscle. Seventy seven percent presented with upper and lower gastrointestinal symptoms (dysphagia, regurgitation, epigastric pain, constipation, and distention). No correlation was found between esophageal motility alterations and gastrointestinal symptoms, nor with the clinical stage of disease in accordance to Brook (r = 0.27).
  
  
  CONCLUSIONS
  These results show that patients with DMD present esophageal motor disorders in both striated and smooth muscle, as well as upper and lower gastrointestinal symptoms. Specialized motility studies could yield a better understanding of disease, and, possibly with adequate treatment, provide for a better quality of life in children with DMD.
authors.affiliation: Hospital de Pediatría, Centro Médico Nacional Siglo XXI, IMSS, México D.F.
authors.forename: A L
authors.initials: AL
authors.lastname: Camelo
authors.forename: R A
authors.initials: RA
authors.lastname: Awad
authors.forename: A
authors.initials: A
authors.lastname: Madrazo
authors.forename: F
authors.initials: F
authors.lastname: Aguilar
authors.forename: R A
authors.initials: RA
authors.lastname: Award
mesh_terms: D002648:Child; D015154:Esophageal Motility Disorders / Q000150:complications* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008365:Manometry; D008800:Mexico; D018482:Muscle, Skeletal / Q000503:physiopathology; D009130:Muscle, Smooth / Q000503:physiopathology; D009136:Muscular Dystrophies / Q000150:complications* / Q000503:physiopathology