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Updated: Jun 22, 2026

Simultaneous Laryngopharyngeal and Conventional Esophageal pH Monitoring
Published on: December 14, 2020
Residual gastric volume and risk for pulmonary aspiration in children with gastroesophageal reflux. Comparative study
Marcos Guilherme Cunha Cruvinel1, Paulo Fernando Souto Bittencourt, José Roberto de Rezende Costa
1Departamento de Anestesiologia dos Hospitais Mater Dei, Belo Horizonte, MG.marcoscruvinel@uai.com.br
Insights
Children with gastroesophageal reflux do not face a higher risk of pulmonary aspiration during anesthesia. Their residual gastric volume is comparable to children without reflux, suggesting routine prophylaxis may not be necessary.
Area of Science:
- Pediatric Anesthesiology
- Gastroenterology
Background:
- Gastroesophageal reflux (GER) in children often necessitates anesthesia for procedures.
- GER is associated with delayed gastric emptying, raising concerns about pulmonary aspiration risk.
Purpose of the Study:
- To compare residual gastric volume in children with and without GER.
- To determine if GER increases pulmonary aspiration risk during anesthesia.
Main Methods:
- 38 pediatric patients (ASA I-II) undergoing upper digestive endoscopy were studied.
- Patients were divided into two groups: with GER (group R) and without GER (group N).
- Gastric content was collected and measured during endoscopy.
Main Results:
- No significant differences in age, weight, or fasting time between groups.
- All patients had residual gastric volume < 0.4 ml/kg.
- Residual gastric volume did not differ significantly between children with and without GER.
Conclusions:
- Children with GER are not at increased risk for pulmonary aspiration under anesthesia.
- Routine pulmonary aspiration prophylaxis may not be necessary for children with GER undergoing anesthesia.
Background And Objectives:
Children with gastroesophageal reflux are often submitted to anesthesia for both diagnostic and therapeutic procedures. They are considered as having delayed gastric emptying and so anesthesia in this group is surrounded by special consideration, mostly with regard to pulmonary aspiration. This study aimed at comparing residual gastric volume of children with and without gastroesophageal reflux and at determining if children with gastroesophageal reflux are at risk for pulmonary aspiration during anesthesia.
Methods:
Participated in this study 38 children, physical status ASA I and II undergoing upper digestive diagnostic endoscopy. Children were distributed in two groups, according to the presence (group R) or absence (group N) of gastroesophageal reflux. All gastric content was collected and measured during the procedure.
Results:
There were 18 (47%) group R children and 20 (53%) group N children. Age, weight and fasting time were not significantly different between groups. In all patients, residual gastric volume was less then 0,4 ml kg(-1) and there were no significant differences between groups.
Conclusions:
Children with gastroesophageal reflux were not at increased risk for pulmonary aspiration, as compared to children without reflux. Therefore, its prophylaxis would not be necessary.
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