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Is yield pressure at the cardia increased by effective fundoplication?
  1. R C McGouran,
  2. J M Galloway,
  3. F C Wells,
  4. O R Hendrie
  1. Department of Gastroenterology, Queen Elizabeth Hospital, King's Lynn, Norfolk.


    Yield pressure at the cardia was measured before and after fundoplication in 10 patients; five had a Nissen fundoplication and five a Belsey mark IV procedure. Surgery was considered successful if oesophagitis healed or if 24 hour pH monitoring returned to normal. There was a marked rise in yield pressure in all eight patients with a successful operation. Yield pressure remained low in two patients in whom oesophagitis persisted.

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