Ohmega System for Impedance & pH Recording

Gastro-oesophageal reflux disease (GORD) is caused by reflux of gastric contents into the Oesophagus.

Impedance-pH detects and analyses acidic, non acidic, weak acidic reflux and air episodes. Combined Impedance-pH recording is clinically useful in the evaluation of symptoms under PPI therapy as well as for hoarseness, unexplained cough, wheezing, non-cardiac chest pain and paediatric applications of particular interest.




Ambulatory Impedance & pH Recording

The Ohmega is a small, lightweight ambulatory system which combines pH recording and Impedance monitoring. As a result the Ohmega detects reflux activity using Impedance and categorizes these reflux episodes as acid or nonacid using traditional pH measurement. The Ohmega is a complete reflux monitoring system.

The Ohmega offers unique features. The Virtual Instructor ProgramTM helps to complete the procedure succesfully, even with minimal training. Bluetooth® capabilities make it possible to view and check data while recording. The intelligent symptom analysis software quantifies all reflux episodes fast and simple.

    • Recording up to 12 Impedance & 4 pH channels: Antimony, Glass or ISFET pH recording with LES locator.

    • Intelligent Symptom Analysis Software: Provides the user with a diagnosis based on combined data of Impedance and pH.

    • VIP, Virtual Instructor ProgramTM: Guides user to successfully complete procedures with minimal training. Easy calibration of catheter via the PC.

    • On-line View of Recordings: Wireless Bluetooth7 techniques make it possible to view data while recording. High quality signal recording can be quaranteed before patient leaves investigation room.

    • Small and Lightweight: Compact housing with comfortable carrying bag.

    • Recording of 4 Pressures: As an option up to 4 pressures can be added.

    • Sleeplab (optional): Sleeplab output for 16 predefined analogue channels.

Software incorporates recording and analysis for adult, paediatric and neonatal investigations.



Title:Gastro-oesophageal reflux monitoring: review and consensus report on detection and definitions of acid, non-acid, and gas reflux
Author(s):D Sifrim, D Castell, J Dent and P J Kahrilas
Ref:Gut 2004;53;1024-1031 doi:10.1136/gut.2003.033290
Title:Evaluation of Gastroesophageal Reflux Events in Children Using Multichannel Intraluminal Electrical Impedance
Author(s):Tobias G. Wenzl, MD
Ref:August 18, 2003 The American Journal of Medicine Volume 115 (3A) 165S
Title:Use of Multichannel Intraluminal Impedance to Document Proximal Esophageal and Pharyngeal Nonacidic Reflux Episodes
Author(s):Radu Tutuian, MD, Donald O. Castell, MD
Ref:August 18, 2003 The American Journal of Medicine Volume 115 (3A) 123S
Title:Multiple Intraluminal Electrical Impedancometry for Recording of Upper Gastrointestinal Motility: Current Results and Further Implications
Author(s):H. N. Nguyen, M.D., J. Silny, Professor, and S. Matern, Professor
Ref:The American Journal of Gastroenterology Vol. 94, No. 2, 1999
Title:Normal values and day-to-day variability of 24-h ambulatory oesophageal impedance-pH monitoring in a Belgian–French cohort of
healthy subjects
Author(s):F. Zerbib, S. Bruley des Varannes, S. Roman, P. Pouderoux§, F. Artigue, U. Chaput, F. Mion, F. Caillol, E. Verin, G. Bommelaer, P. Ducrotte, J.P. Galmiche & D. Sifrim
Ref:Aliment Pharmacol Ther 2005; 22: 1011–1021.
Title:Normal Values of Pharyngeal and Esophageal 24-Hour pH Impedance in Individuals on and off Therapy and Interobserver Reproducibility
Author(s):Frank Zerbib, Sabine Roman, Stanislas Bruley des Varannes, Guillaume Gourcerol, Benoît Coffin, Alain Ropert, Patricia Lepicard, François Mion, and the Groupe Français de Neuro-Gastroentérologie
Ref:Clinical Gastroenterology and Hepatology 2013;11:366–372

Orion II Ambulatory pH Recording System

The Orion II is one of the most comprehensive, user-friendly pH recorders available for the diagnosis of gastro-oesphageal reflux diseases and non-cardiac chest pain.

Features include:

  • Wireless communication
  • Easy calibration of data via PC
  • Virtual Instructor Program guides user to complete training
  • 4 pH channels
  • Lightweight and compact