“A New pH Catheter for Laryngopharyngeal Reflux: Normal Values”
September 10, 2017“Changes in Prevalence Incidence and Spontaneous Loss of Gastro-Oesophageal Reflux Symptoms: A Prospective Population Based Cohort Study the Hunt Study”
September 10, 2017Golub JS, Johns MM 3rd, Lim JH, DelGaudio JM, Klein AM. Ann Otol Rhinol Laryngol. 2009 Jan;118(1):1-5.
OBJECTIVES: We compared the ability of an oropharyngeal (OP) aerosol-detecting pH probe and a standard dual pH probe in measuring laryngopharyngeal reflux (LPR).
RESULTS: The mean duration of acid exposure was 650 seconds (SD, 619) or 0.75% of the total time for the OP probe and 438 seconds (SD, 511) or 0.51% of the total time for the UES probe. When we excluded meals and sleep, the mean duration of acid exposure was 271 seconds (SD, 356) or 0.31% of the total time for the OP probe and 271 seconds (SD, 359) or 0.31% of the total time for the UES probe. The correlation coefficient (R) between the two probes for measurement of the duration of acid exposure was 0.50 (p < 0.05). When we excluded meals and the supine position, the R was notably higher, at 0.95 (p < 0.0001).
CONCLUSION: The OP probe reliably documented LPR events when meals and sleep were eliminated and was better tolerated than the standard dual probe.