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The string test for gastroesophageal reflux

W M Liebman, P Rosenthal

    American Journal of Diseases of Children (1960)
    |August 1, 1980
    PubMed
    Summary
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    The string test effectively screens for gastroesophageal reflux in children. This simple method shows promise for diagnosing reflux in pediatric patients presenting with vomiting or respiratory issues.

    Area of Science:

    • Pediatric Gastroenterology
    • Diagnostic Testing

    Background:

    • Gastroesophageal reflux (GER) is common in infants and children.
    • Vomiting, regurgitation, and lower respiratory symptoms can indicate GER.
    • Accurate diagnostic tools are crucial for timely intervention.

    Purpose of the Study:

    • To evaluate the sensitivity of the string test for detecting gastroesophageal reflux in pediatric patients.
    • To compare the string test's performance against established diagnostic methods.

    Main Methods:

    • The study included 15 pediatric patients (5 months to 11 years) with symptoms suggestive of GER.
    • Diagnostic methods employed were the string test, barium esophagram, esophageal manometry, and acid reflux (pH probe) test.
    • Sensitivity was compared across all tested methods.

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    Main Results:

    • The barium esophagram detected reflux in 4/15 patients.
    • The pH probe identified reflux in 7/15 patients.
    • The string test demonstrated reflux in 6/15 patients, showing comparable sensitivity to the pH probe.

    Conclusions:

    • The string test is a sensitive and reliable method for screening pediatric gastroesophageal reflux.
    • Its simplicity, speed, and safety make it an efficient tool for initial diagnosis.
    • The string test aids in identifying children requiring further investigation for GER.