Twenty-four hour esophageal pH monitoring by telemetry

From sponges to capsules. The history of esophageal pH monitoring

“…Falor et al. 13 described in 1981 a battery‐powered pH meter connected to a 1.5‐lb transmitter that allowed the patient to be as far as 300 feet from the recording machine, thus allowing the procedure to be conducted ambulatory. Several technical modifications and improvements were subsequently achieved, culminating in the development of a computerized portable device.…”

How can a migraine cause faecal incontinence?

“…1 More than a decade after its introduction as a hospital based technique for inpatients, oesophageal pH monitoring became rather popular when ambulatory data recorders became available. 2 Most of the studies carried out with the technique focused on measurement of oesophageal acid exposure, defined as percentage of time with pH below 4, in patients with various manifestations of GORD. Later, the notion emerged that 24 hour pH recording also makes it possible to investigate the temporal relation between reflux and symptoms.…”

Is Wireless Capsule pH Monitoring Better Than Catheter Systems?

“…Since 1980, catheter-based 24-hour ambulatory pH monitoring has been most commonly used to diagnose gastroesophageal reflux disease (GERD) objectively 1. This system allows us the analysis of the quantified time of esophageal acid exposure, and the association between symptoms and reflux events.…”

“…Since 1980, catheter-based 24-hour ambulatory pH monitoring has been most commonly used to diagnose gastroesophageal reflux disease (GERD) objectively. 1 This system allows us the analysis of the quantified time of esophageal acid exposure, and the association between symptoms and reflux events. It has many advantages in elucidating the reason for failure of proton pump inhibitor (PPI) treatment in patients with reflux symptoms, documenting reflux before and after anti-reflux surgery, and assessing the adequacy of acid control in patients with complicated GERD.…”