Nasopharyngeal pH monitoring in chronic sinusitis patients using a novel four channel probe.
Laryngoscope
; 114(9): 1582-5, 2004 Sep.
Article
en En
| MEDLINE
| ID: mdl-15475786
OBJECTIVE: To determine the prevalence of acid reflux into the nasopharynx in patients with chronic sinusitis. STUDY DESIGN: Prospective study of patients presenting to a specialist rhinology practice with chronic sinusitis. METHODS: Forty patients with chronic sinusitis underwent ambulatory 24 hour pH testing. The mean age of the patients was 56.3 years (25 Female, 15 Male). The studies were performed using a specially developed bifurcated 4 channel pH probe, incorporating 2 circumferential sensors positioned at the naso- and hypo-pharynx, and 2 unidirectional sensors positioned at the proximal and distal esophagus. RESULTS: The circumferential band sensors yielded a stable recording largely free of artefact allowing meaningful recordings to be obtained from thirty-seven patients. Twelve patients (32.4%) were diagnosed with gastroesophageal reflux. A total of 809 reflux episodes were recorded. Of these, 596 (73.7%) reached the distal esophagus, with 187 (23.1%) and 24 (3.0%) reaching the proximal esophagus and hypopharynx respectively. Only 2 episodes (0.2%) were recorded in the nasopharynx. This occurred in 2 of 37 patients (5%). CONCLUSIONS: Acid reflux into the nasopharynx is a rare event in patients with chronic sinusitis even though a significant proportion (32.4%) have abnormal 24 hour pH studies. It is likely that alternative mechanisms other than direct acid contact are involved in the pathogenesis of chronic sinusitis.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Sinusitis
/
Procesamiento de Señales Asistido por Computador
/
Reflujo Gastroesofágico
/
Monitoreo Ambulatorio
/
Determinación de la Acidez Gástrica
Tipo de estudio:
Diagnostic_studies
/
Etiology_studies
/
Observational_studies
/
Risk_factors_studies
Límite:
Adult
/
Aged
/
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Laryngoscope
Asunto de la revista:
OTORRINOLARINGOLOGIA
Año:
2004
Tipo del documento:
Article