Brigger MT, Sipp JA, Hartnick CJ. Int J Pediatr Otorhinolaryngol. 2009 Jul;73(7):999-1001.
OBJECTIVES: 1. Determine the feasibility of measuring tracheal pH with a novel non-aqueous probe designed for oropharyngeal pH monitoring. 2. Correlate clinical and subclinical laryngopharyngeal reflux aspiration events with esophageal pH measurements.
RESULTS: 3/5 children tolerated the tracheal probe for greater than 18h. Adequate tracheal pH tracings were demonstrated for all children while the probe was in position. Mean baseline tracheal pH was 7.8. One child demonstrated direct correlation between acidic esophageal reflux events and decreased tracheal pH. Esophageal biopsy confirmed the presence of active inflammation consistent with reflux in this child.
CONCLUSION: Tracheal pH can be accurately recorded with the Restech Dx-pH probe. The technology may allow further investigations to determine the impact of gastroesophageal refluxate aspiration and empiric antireflux therapy in children with aerodigestive symptoms.