Double contrast examination of the stomach. An improved technique.

Double contrast examination of the stomach has a greater accuracy than conventional barium meal, especially in the diagnosis of minor gastric lesions. The use of a common drinking straw with a side-hole to introduce air simultaneously with the barium suspension after gastric emptying with metoclopramide and using short acting hypotonic agents like Buscopan and Glucagon provides a practical and effective simplified technique for double contrast examination of the oesophagus, stomach and duodenum.