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Comparative Study
. 2016 Apr;62(4):556-61.
doi: 10.1097/MPG.0000000000000968.

Temporal Association Between Reflux-like Behaviors and Gastroesophageal Reflux in Preterm and Term Infants

Apryle Funderburk  1 , Ursula Nawab, Sheeja Abraham, Joan DiPalma, Michele Epstein, Heather Aldridge, Zubair H Aghai
Affiliations
Comparative Study

Temporal Association Between Reflux-like Behaviors and Gastroesophageal Reflux in Preterm and Term Infants

Apryle Funderburk et al. J Pediatr Gastroenterol Nutr. 2016 Apr.

Abstract

Objectives: Multichannel intraluminal impedance studies (MII-pH) have become the criterion standard for the diagnosis of gastroesophageal reflux (GER). Several clinical signs and symptoms that are attributed to GER during infancy may not be related to true reflux. Our objective was to correlate the observed reflux-like behaviors to reflux events on MII-pH studies.

Methods: This is a retrospective study on infants being evaluated for GER with MII. During the MII-pH study, the infants were observed for clinical behaviors. Symptom Index (SI), symptom sensitivity index (SSI), and symptom association probability were used to correlate symptoms with reflux events.

Results: Of 58 infants (40 preterm, 18 term) included in the study, only 6 infants (10%) had an abnormal MII-pH study. Irritability (32 infants), bradycardia (20), and desaturation (18) were the common signs and symptoms. A total of 2142 (755 acidic and 1386 nonacidic) reflux episodes and 953 clinical reflux behaviors were recorded. The incidence and pattern of GER was similar in preterm and term infants. There was no significant difference in GER episodes and acid exposure in preterm infants fed orally or via nasogastric tube. The symptom association probability was abnormal in only 6 (19%), 1 (5%), and 5 (28%) infants with irritability, bradycardia, and desaturation, respectively.

Conclusions: The prevalence of GER as detected by MII-pH was low (10%) in symptomatic preterm and term infants. The incidence and pattern of GER was similar in preterm and term infants. The majority of suspected clinical reflux behaviors did not correlate with reflux events.

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Conflict of interest statement

The authors report no conflicts of interest.

Figures

FIGURE 1
FIGURE 1
Indications for MII-pH study in the study population expressed in percentage (some infants had more than 1 indication for MII-pH study). MII-pH = multichannel intraluminal impedance study.
FIGURE 2
FIGURE 2
Symptom/reflux association in the study population representing percent of infants with SI > 50%, SSI > 10%, SAP > 95% and all of the 3 for each sign or symptom. SI = percentage of symptoms related to GER episode; SSI = percentage of GER episodes associated with symptom; SAP = symptom association probability.
See this image and copyright information in PMC

Comment in

  • Symptom Association: An Imperfect Pairing.
    Rosen R. Rosen R. J Pediatr Gastroenterol Nutr. 2016 Apr;62(4):517-8. doi: 10.1097/MPG.0000000000000958. J Pediatr Gastroenterol Nutr. 2016. PMID: 26308322 Free PMC article. No abstract available.

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