Measuring Acid Reflux with Precision
Oesophageal pH monitoring provides definitive assessment of gastro-oesophageal reflux by measuring acid exposure in your oesophagus over an extended period. This test quantifies both the frequency and severity of reflux episodes, correlating symptoms with actual acid events.
Testing Methods
Two approaches are available:
– Wireless pH capsule: A small capsule is temporarily attached to your oesophageal wall during endoscopy, transmitting pH data to an external receiver for 48-96 hours
– Catheter-based monitoring: A thin catheter with pH sensors remains in place for 24 hours, connected to a portable recording device
Diagnostic Value
pH testing definitively establishes:
– Presence and severity of acid reflux
– Correlation between symptoms and reflux events
– Effectiveness of acid-suppressing medication
– Causes of persistent symptoms despite treatment
– Assessment before considering anti-reflux surgery
– Non-cardiac chest pain evaluation
During the Monitoring Period
You’ll maintain normal activities, eating, and sleeping patterns whilst the monitor records continuously. A diary helps correlate your symptoms with recorded pH changes. The catheter system requires 24-hour monitoring, whilst the wireless capsule allows extended assessment over multiple days.
Interpreting Results
Comprehensive analysis reveals the total acid exposure time, number of reflux episodes, and their relationship to your symptoms. These objective findings guide treatment optimisation, helping determine whether medication adjustment, lifestyle modification, or surgical intervention would best serve your needs.
