AIM: To investigate the agreement between esophageal manometry and pH step-up method in two different patient positions. METHODS: Eighteen subjects were included in the study. First, the distance from the nose to the proximal border of the lower esophageal sphincter (LES) was measured manometrically. Then a different investigator, who was blinded to the results of the first study, measured the same distance using the pH step-up method, with the patient in both upright and supine positions. An assessment of agreement between the two techniques was performed. RESULTS: In the supine position, the measurement of only one subject was outside the range accepted for correct positioning (< or = 3 cm distal or proximal to the LES). In the upright position, errors in measurement were recognized in five subjects. Bland-Altman plots revealed good agreement between measurements obtained manometrically and by the pH-step up method with the patient in the supine position. CONCLUSION: In the case of nonavailability of manometric detection device, the pH step-up method can facilitate the positioning of the 24 h pH monitoring catheter with the patient in the supine position. This should increase the use of pH-metry in clinical practice for subjects with suspected gastroesophageal reflux disease if our results are supported by further studies.
AIM: To investigate the agreement between esophageal manometry and pH step-up method in two different patient positions. METHODS: Eighteen subjects were included in the study. First, the distance from the nose to the proximal border of the lower esophageal sphincter (LES) was measured manometrically. Then a different investigator, who was blinded to the results of the first study, measured the same distance using the pH step-up method, with the patient in both upright and supine positions. An assessment of agreement between the two techniques was performed. RESULTS: In the supine position, the measurement of only one subject was outside the range accepted for correct positioning (< or = 3 cm distal or proximal to the LES). In the upright position, errors in measurement were recognized in five subjects. Bland-Altman plots revealed good agreement between measurements obtained manometrically and by the pH-step up method with the patient in the supine position. CONCLUSION: In the case of nonavailability of manometric detection device, the pH step-up method can facilitate the positioning of the 24 h pH monitoring catheter with the patient in the supine position. This should increase the use of pH-metry in clinical practice for subjects with suspected gastroesophageal reflux disease if our results are supported by further studies.
Authors: Robert E Marsh; Christopher L Perdue; Ziad T Awad; Patrice Watson; Mohamed Selima; Richard E Davis; Charles J Filipi Journal: World J Gastroenterol Date: 2003-01 Impact factor: 5.742
Authors: Sarah K Thompson; Wang Cai; Glyn G Jamieson; Alison Y Zhang; Jennifer C Myers; Zoe E Parr; David I Watson; Jenny Persson; Gerald Holtmann; Peter G Devitt Journal: J Gastrointest Surg Date: 2008-08-20 Impact factor: 3.452