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Timed barium esophagogram in the assessment of patients with achalasia: reproducibility and observer variation

Artikel i vetenskaplig tidskrift
Författare Srdjan Kostic
Mats Andersson
Mikael Hellström
Hans Lönroth
L Lundell
Publicerad i Diseases of the esophagus
Volym 18
Nummer/häfte 2
Sidor 96-103
ISSN 1120-8694 (Print)
Publiceringsår 2005
Publicerad vid Institutionen för de kirurgiska disciplinerna, Avdelningen för kirurgi
Institutionen för särskilda specialiteter, Avdelningen för radiologi
Sidor 96-103
Språk en
Länkar www.ncbi.nlm.nih.gov/entrez/query.f...
Ämnesord Adult, Aged, Barium Sulfate/*diagnostic use, Contrast Media/*pharmacology, Esophageal Achalasia/*radiography, Female, Humans, Male, Middle Aged, Observer Variation, Reproducibility of Results
Ämneskategorier Medicin och Hälsovetenskap

Sammanfattning

SUMMARY. The timed barium esophagogram (TBE) is a further development of the barium swallow, introducing functional and dynamic dimensions to the assessment. The purpose of our study was to assess the day to day variability of TBE parameters when scored in healthy subjects, in untreated and in previously treated patients with confirmed diagnoses of achalasia and to assess the intra- and interobserver agreement. After fasting, the subjects drank 250 mL of low-density barium sulfate suspension. Radiographs of the esophagus were exposed at 1, 2 and 5 min after the start of the barium ingestion. The heights and widths of the barium column and changes in these parameters over time (esophageal emptying) were assessed. Each subject was re-tested after a median time interval of 8 days. Healthy individuals emptied their esophagi effectively and promptly with no significant amount of contrast remaining in the lumen after 2 min. In the achalasia patients all TBE variables differed profoundly compared to the controls. There was an excellent intra- and interobserver agreement for all measured variables. The reproducibility of the static TBE variables from day-to-day was good, but not so for the functional assessment of esophageal emptying, having a correlation coefficient of only 0.50. The usefulness of TBE as a clinical and research tool in achalasia patients requires further evaluation.

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