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Combined multichannel intraluminal impedance and pH monitoring assists the diagnosis of sliding hiatal hernia in children with gastroesophageal reflux disease

  • Original Article—Alimentary Tract
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Abstract

Background

The role of combined multichannel intraluminal impedance and pH monitoring (MII-pH) in diagnosing sliding hiatal hernia in gastroesophageal reflux disease (GERD) children remains unclear. We aimed to explore the clinical efficacy of MII-pH as a supplement diagnostic method for sliding hiatal hernia.

Methods

A total of 104 symptomatic GERD children [mean ± standard deviation (SD) age = 4.5 ± 5.5 years] were recruited. All of them were diagnosed as GERD with and without sliding hiatal hernia by barium and/or esophagogastroduodenoscopy study. All subjects received 24 h MII-pH monitoring to test the efficacy of this new modality.

Results

Sixteen children were diagnosed to have sliding hiatal hernia, and nine (56.3 %) of them received fundoplication. None of non-hiatal hernia children were indicated for fundoplication [risk difference (RD) 0.56; P < 0.001]. Impedance probes detected more reflux episodes than pH-probe in the whole study population (mean ± SD = 62.1 ± 47.8 vs. 47.8 ± 48.1 episodes; P = 0.02, paired t test). Due to the presence of pH-only reflux, the reflux episodes detected by impedance probes is less than that by pH probe in sliding hiatal hernia children (mean ± SD = 49.2 ± 78.9 vs. 103.7 ± 60.4 episodes; P = 0.01, paired t test). Ratio of reflux episodes detected by pH-probe to that by impedance probes >1 was more frequently noted in sliding hiatal hernia children than non-sliding hiatal hernia children (Odds ratio 58.33, P < 0.001). The sensitivity and specificity of this diagnostic tool to predict sliding hiatal hernia in GERD children are 93.8 and 79.6 %, respectively.

Conclusions

Ratio of reflux episodes detected by pH-probe to that by impedance probes >1 demonstrated by MII-pH study is a good screening test of sliding hiatal hernia in GERD children.

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Abbreviations

EGD:

Esophagogastroduodenoscopy

GERD:

Gastroesophageal reflux disease

MII-pH:

Multichannel intraluminal impedance and pH monitoring

UGI:

Upper gastrointestinal

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Acknowledgments

This work was supported by a grant from National Taiwan University Hospital (NTUH.100-M1671).

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The authors have no potential, perceived, or real conflict of interest.

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Correspondence to Yen-Hsuan Ni.

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Wu, JF., Hsu, WC., Tseng, PH. et al. Combined multichannel intraluminal impedance and pH monitoring assists the diagnosis of sliding hiatal hernia in children with gastroesophageal reflux disease. J Gastroenterol 48, 1242–1248 (2013). https://doi.org/10.1007/s00535-013-0750-0

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  • DOI: https://doi.org/10.1007/s00535-013-0750-0

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