Related Experiment Video
Updated: Nov 24, 2025

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
Published on: December 14, 2020
Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
Dolores T Müller1, Justus Toader1, Benjamin Babic1
1Department of General, Visceral, Cancer and Transplant Surgery, University of Cologne.
Abstract:
In addition to typical reflux symptoms, many patients with gastroesophageal reflux disease (GERD) present with extraesophageal symptoms such as cough, hoarseness or asthma, which can be caused by laryngopharyngeal reflux (LPR). Due to their multifactorial origin, those symptoms can be a great diagnostic and therapeutic challenge. Esophageal pH-monitoring is commonly used to determine abnormal esophageal acid exposure and confirm the diagnosis of GERD. However, for better evaluation of acid exposure above the upper esophageal sphincter, a new laryngopharyngeal pH measurement system is now available and may lead to more reliable results in patients with predominantly extraesophageal symptoms. This article aims to present a standardized protocol for simultaneous pH measurement using esophageal and laryngopharyngeal pH probes in order to obtain acid exposure scores from both measurements.
Related Concept Videos
Endoscopic Procedures I: Esophagogastroduodenoscopy
During an EGD, the endoscope can be used to:
Suctioning the Oropharyngeal Airway
After assembling the equipment, the nurse should practice hand hygiene and don appropriate PPE according to infection control guidelines to avoid the...
Cardiopulmonary Resuscitation V: Advanced Airway Management Techniques
Suctioning the Nasopharyngeal Airway
Equipment Required
Pulse rhythm
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
Esophageal Perforation-II: Clinical Manifestations and Management
Clinical Manifestations:

