Normal Values for Pharyngeal pH Monitoring

Abstract

Normative pharyngeal pH values are presented. Further studies are required to determine clinical relevance.

A pilot study on diagnosing laryngopharyngeal reflux disease by pharyngeal pH probe monitoring

“…When data retrieved from Dx pH probe are transferred into a computerized system, any desired value can be determined as a baseline pH and relevant calculations can be performed. [3][4][5][6][17][18][19][20] In an investigation performed on 55 asymptomatic volunteers, Gloub et al [5] reported parallelism between data obtained by Dx pH and standard dualprobe monitorization technique. In another study conducted in Emory University (Atlanta, 2007) Dx pH probe was compared to gold standard dual-probe 24-hour and detected mean pH measurements at the end of a 24-hour monitorization period (excl.…”

“…Despite all of these diagnostic tests, a 100 % sensitive and specific single method leading to correct diagnosis is lacking. [4][5][6][7] Thanks to scoring system for symptomatic severity and endoscopic findings in LPR, difference between posttreatment state and baseline has become apparent. Belafsky et al [2,3] formulated reflux finding scoring (RFS) system based on reflux symptom index (RSI) and fiberoptic laryngoscopic findings and conducted investigations on its applicability as a diagnostic tool in LPR.…”

“…Its easy applicability and more specific identification of pseudoreflux episodes are among advantages of Dx pH. [4][5][6] In our study we applied Dx pH probe for cases evaluated by RSI and RFS and aimed to share information related to its diagnostic efficacy in LPR and our clinical outcomes.…”

Oropharyngeale pH-Metrie

“…Davon wurde eine weitere Arbeit, die ein Anwendungsbeispiel anhand von 5 Patienten beschreibt, ausgeschlossen. Die verbliebenen 5 Arbeiten stellen Normwertbestimmung für die oropharyngeale pHMesssonde oder einen Vergleich zwischen einer Standard-2-Kanal-pH-Metrie und der oropharyngealen pH-Metrie dar [21,22,23,24,25]. Diese Arbeiten werden im Folgenden in die Diskussion aufgenommen.…”

“…Normwerte anhand von gesunden Probanden für die oropharyngeale pHSonde werden außerdem von Chheda et al und Sun et al dargestellt [22,24]. Eine Überprüfung an einem größeren Patientenkollektiv mit entsprechender Refluxproblematik fehlt aber bisher noch.…”