Abstract
A computerized 12-h simultaneous ECG, pressure- and pH-probe investigation method of the oesophagus is described, and reference values in healthy individuals presented. The analysing system includes two new elements. An interface box, which detects propagating and retrograde peristalsis, by looking at pressures in the oesophagus. A computer (Hewlett Packard 9845T), which makes the whole analysis automatic, draws a 12-h pH-curve, makes area computations, pH-related swallow registrations and time-pH relationships. The results obtained with this measuring system are in agreement with the results of other similar investigations. It is concluded that area computation is the most accurate method of reflux detection. Furthermore this simultaneous ECG, pressure and pH measuring system is excellent in differentiating between chest pain of cardial and oesophageal origin.
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