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  • Title: [Acid and non-acid gastro-esophageal reflux in newborns. Preliminar results using intraluminal impedance].
    Author: López Alonso M, Moya MJ, Cabo JA, Ribas J, Macías MC, Silny J, Sifrim D.
    Journal: Cir Pediatr; 2005 Jul; 18(3):121-6. PubMed ID: 16209372.
    Abstract:
    Preterm infants present often Gastroesophageal refluxes (GER). Esophageal pH monitoring to reflux detection is of limited use in this infants because their gastric pH is normally higher than 4 for 90% of the time. Other methods such as the Intraluminal Impedance Technique (MII) technique and the use of micromanometric catheters try to palliate the difficulties for measuring GER by pH monitoring. The aim of this study, in a first step, was to obtain the normal Intraluminal Impedance values on control children and, in a second step, to study the relationship between GER and cardiorespiratory episodes using simultaneous recording of the end-tidal fraction of expired CO2, 02 saturation by pulse-oximetry, respiratory frequency, esophageal impedance and manometry, gastro-esophageal pHmetry, and electrocardiography in selected patients. Data from simultaneous pH and Intraluminal Impedance during 24 hours in 7 control preterms showed 89 acid refluxes, 192 non-acid refluxes, 79.36% of all refluxes reached the proximal esophagus. Therefore the impedance is an innocuous method which opens new horizons in the study of such a common illness as the GER in the preterm infants.
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