Combined esophageal multichannel intraluminal impedance and pH monitoring after repair of esophageal atresia.
OBJECTIVE
Gastroesophageal reflux disease and impaired esophageal motility is a frequent problem after repair of esophageal atresia (EA). Combined multichannel intraluminal impedance (MII) and pH measurement identifies acidic and weakly acidic esophageal bolus movements. Our aim was to evaluate gastroesophageal reflux and its association with gastrointestinal or extraintestinal symptoms using combined MII-pH measurement.


METHODS
In all, 24 patients (4 months-23 years; 17 male, 7 female) with repaired EA were included in this study. A single catheter with 6 impedance channels and 1 pH channel was used to perform the 24-hour MII-pH study. Symptoms were recorded during the study as events and with a standardized questionnaire. In a subgroup of patients, an impedance swallowing test evaluating liquid and viscous bolus movements was performed.


RESULTS
We detected a total of 911 episodes of retrograde bolus movement, 379 acidic and 532 weakly acidic bolus movements. In all, 201 symptom events were recorded. Of these events, 42% were associated with retrograde bolus movements. More symptom events were associated with weakly acidic reflux (26%) than with acid reflux episodes (16%). There was a poor correlation between symptoms and MII-pH study findings. In comparison with patients without esophageal surgery, EA patients showed significantly fewer complete swallows of liquid (42% vs 98%) and viscous material (18% vs 87%).


CONCLUSIONS
In patients with corrected EA, half of the reflux events could be detected only by MII. We also demonstrated that weakly acidic reflux can be responsible for the patients' symptoms. However, patients may have few or no symptoms despite poor esophageal function and extensive gastroesophageal reflux disease.
Fröhlich
Thorsten
T
Kinder- und Jugendklinik, Universitätsklinikum Erlangen, Germany.
Otto
Stephanie
S
Weber
Peter
P
Pilic
Denisa
D
Schmidt-Choudhury
Anjona
A
Wenzl
Tobias G
TG
Köhler
Henrik
H
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003938:Diagnostic Techniques, Digestive System; D017097:Electric Impedance; D004933:Esophageal Atresia / Q000601:surgery*; D050782:Esophageal pH Monitoring; D005260:Female; D005745:Gastric Acidity Determination / Q000295:instrumentation; D005764:Gastroesophageal Reflux / Q000175:diagnosis* / Q000209:etiology* / Q000378:metabolism; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007223:Infant; D008297:Male; D012680:Sensitivity and Specificity; D055815:Young Adult