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.
Pediatric patients aged under 18 years
Patients who underwent upper gastrointestinal endoscopy for gastrointestinal symptoms or pathology
Patients with available hospital records, anesthesia records, and endoscopy reports
Patients with documented preoperative fasting duration
Patients aged 18 years or older
Patients with missing or incomplete data for key study variables
Patients without documented preoperative fasting duration
Patients without documented gastric residue assessment during endoscopy