Abstract
A combined pH- and pressure-measurement device for oesophageal investigations has been designed using monocrystalline antimony pH electrodes and perfused polyvinyl catheters. The combined device facilitates pressure measurements simultaneously with pH recording, both distal and proximal to the pH electrode. The device is easier to pass through the nose to the oesophagus than the conventional glass pH electrode. pH and pressure measurements in the oesophagus are therefore simplified and valuable information about the function of the region of the lower oesophageal sphincter is added owing to the simultaneous recording of the two parameters.
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Ask, P., Edwall, G. & Tibbling, L. Combined pH and pressure measurement device for oesophageal investigations. Med. Biol. Eng. Comput. 19, 443–446 (1981). https://doi.org/10.1007/BF02441310
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DOI: https://doi.org/10.1007/BF02441310