What clinical evidence is available to confirm that the Restech system works in the upper airway compared to traditional pH sensors used to measure pH above the UES?
Studies conducted with conventional pH catheters placed above the upper esophageal sphincter (UES) have demonstrated repeated failure for reliable pH measurement because conventional pH testing is dependent on immersion in liquid to read pH. Until now, a self-condensing sensor (one that does not require immersion in liquid) was not available. When reflux is aerosolized, conventional pH sensors are incapable of reliably measuring the pH. Restech’s Dx–pH Probe contains a miniature sensor that rests in the tip of a teardrop-shaped catheter. The unique shape keeps the sensor pointed down where it reads the aerosolized reflux. Due to the unique configuration and positioning of the pH sensor, Restech has virtually eliminated the problem of false negatives.
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