title: Lateral-hole catheters compared with shielded-hole catheter systems in oesophageal manometry.
abstract: Water-filled catheters with lateral holes in the distal ends are frequently used in oesophageal manometry. However, the outward position of the recording holes makes mucosal interference a possible risk. A pilot study of oesophageal manometry was performed in five healthy volunteers comparing a conventional lateral-hole catheter with the orifices directed to the centre of the catheter bundle, protected from the mucosa. The centre-hole catheter curves showed a lower resting pressure in the upper oesophageal sphincter (UOS) showed a lower resting pressure in the upper oesophageal sphincter (UOS) and a more rapid decline of the UOS peristaltic wave. The motility curves of the oesophageal body were identical with both catheters.
mesh_terms: D000328:Adult; D002404:Catheterization / Q000295:instrumentation*; D004943:Esophagogastric Junction; D004947:Esophagus / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D008365:Manometry / Q000295:instrumentation*; D010528:Peristalsis