An observational study in Gastric Residue, Preoperative Fasting and Upper Gastrointestinal Endoscopy, sponsored by Bursa Sevket Yilmaz Training and Research Hospital. Not yet recruiting at 1 site in Turkey (Türkiye). Open to participants aged 0 Years to 17 Years. Per ClinicalTrials.gov, last updated 2026-05-29.
Sponsored by Bursa Sevket Yilmaz Training and Research Hospital · Observational
This retrospective observational study aims to evaluate the relationship between preoperative fasting duration and gastric residue in pediatric patients undergoing upper gastrointestinal endoscopy for gastrointestinal symptoms or pathology. The study will assess the associations between gastric residue, gastrointestinal symptoms, underlying gastrointestinal diseases, and endoscopic findings. Data will be retrospectively collected from hospital records, anesthesia records, and endoscopy reports to investigate whether prolonged fasting duration reliably predicts an empty stomach in pediatric gastrointestinal patients.
Pulmonary aspiration is one of the most feared complications in pediatric anesthesia, and preoperative fasting is routinely used to reduce gastric content and aspiration risk. Current pediatric fasting guidelines support more liberal fasting regimens, especially for clear liquids, in order to avoid unnecessary prolonged fasting. However, prolonged fasting duration does not always guarantee an empty stomach, particularly in pediatric patients with gastrointestinal symptoms or underlying gastrointestinal pathology.
Recent studies evaluating gastric contents in children have mainly focused on gastric ultrasonography and estimated gastric volume in healthy pediatric populations. Data regarding directly observed gastric residue during upper gastrointestinal endoscopy in pediatric gastrointestinal patients remain limited.
This retrospective observational single-center study will include pediatric patients who underwent upper gastrointestinal endoscopy for gastrointestinal symptoms or pathology between January 2025 and April 2026. Data will be retrospectively obtained from hospital information systems, anesthesia records, electronic medical records, and endoscopy reports.
Demographic characteristics, gastrointestinal symptoms, underlying gastrointestinal diseases, medication use, endoscopic findings, preoperative fasting duration, and endoscopically observed gastric residue will be evaluated. Gastric residue severity will be categorized as none, mild, moderate, or severe. In addition, clinically relevant residue will be defined as moderate or severe gastric residue.
The primary objective of the study is to evaluate the relationship between preoperative fasting duration and gastric residue severity. Secondary analyses will assess factors associated with clinically relevant gastric residue, including gastrointestinal inflammatory disease and other clinical variables.
The findings of this study may contribute to a better understanding of gastric residue patterns in pediatric gastrointestinal patients and support more individualized perioperative fasting assessment approaches.
392 studies on the registry are indexed under Fasting; 63 are open to participants now.
This study's planned enrollment of 110 is close to the median of 100 across 74 observational studies indexed under Fasting.
Browse Fasting studies →Bursa Sevket Yilmaz Training and Research Hospital is the lead sponsor of 6 studies on the registry; 4 are open to participants now.
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Pediatric patients undergoing upper gastrointestinal endoscopy for evaluation of gastrointestinal symptoms or suspected gastrointestinal pathology at a single tertiary care center will be included in this retrospective observational study. The study population will consist of patients evaluated between January 2025 and April 2026. Data will be retrospectively obtained from hospital information systems, anesthesia records, electronic medical records, and endoscopy reports. The study will evaluate demographic characteristics, gastrointestinal symptoms, preoperative fasting duration, endoscopic findings, underlying gastrointestinal diseases, medication use, and endoscopically observed gastric residue.
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Exclusion Criteria:
Pediatric patients undergoing upper gastrointestinal endoscopy for gastrointestinal symptoms or pathology will be included in this retrospective observational cohort. Data regarding demographic characteristics, gastrointestinal symptoms, preoperative fasting duration, endoscopic findings, underlying gastrointestinal diseases, medication use, and endoscopically observed gastric residue will be retrospectively evaluated using hospital records, anesthesia records, and endoscopy reports. Gastric residue severity will be categorized as none, mild, moderate, or severe.
Procedure: Upper Gastrointestinal Endoscopy
Upper gastrointestinal endoscopy performed for evaluation of gastrointestinal symptoms or pathology in pediatric patients. The procedure was conducted under sedation or anesthesia according to institutional clinical practice. Endoscopic findings and endoscopically observed gastric residue were retrospectively evaluated from medical records and endoscopy reports.
Gastric Residue Severity
Severity of endoscopically observed gastric residue during upper gastrointestinal endoscopy, categorized as none, mild, moderate, or severe according to endoscopic findings documented in medical records and endoscopy reports.
Time frame: At the time of upper gastrointestinal endoscopy
Clinically Relevant Gastric Residue
Presence of clinically relevant gastric residue during upper gastrointestinal endoscopy, defined as moderate or severe gastric residue based on endoscopic observation documented in medical and endoscopy records.
Time frame: At the time of upper gastrointestinal endoscopy
Plan to share: No — Individual participant data will not be publicly shared because the study involves retrospective review of pediatric patient records and contains potentially sensitive clinical information.
This study is not yet recruiting, as verified in May 2026. You cannot join it, but the record below documents what was studied.
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Bursa Sevket Yilmaz Training and Research Hospital