Investigation to diagnose the Laryngo pharyngeal reflux
Correct Answer: Dual Probe Impedance pH monitoring
Description: Ans. (b) Dual Probe Impedance pH MonitoringRef: Shackelford Page 222/8th Edition* pH monitoring at the level of Pharynx is not helpful because the acid refluxed is neutralized by the Pharyngeal secretions.* Hence a Dual (Bifurcated) catheter measuring both pH and Impedance is used across Upper esophageal sphincter, thereby permitting detection of Pharyngeal reflux
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