NCT07513675

Gastric Volume and Fasting Duration in Pregnant Women

Comparison of Gastric Volume Measured by Ultrasonography According to Preoperative Fasting Duration in Pregnant Women Undergoing Elective Cesarean Section and Evaluation of Influencing Factors

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 90 (actual)
• Sponsor: Dr. Lutfi Kirdar Kartal Training and Research Hospital · Other Government
• Sex: Female
• Age: 18 Years – 45 Years
• Healthy volunteers: Not accepted

Summary

This prospective observational study aimed to evaluate the effect of preoperative fasting duration on gastric volume and antral visibility in pregnant women undergoing elective cesarean section. Patients were divided into two groups according to fasting duration (6-8 hours and 8-10 hours), and preoperative gastric ultrasonography was performed to assess antral cross-sectional area and gastric volume. Additionally, the study investigated the relationship between gastric ultrasound findings and postoperative complications such as nausea and vomiting. The influence of demographic and clinical variables, including age, body mass index, ASA score, and fetal characteristics, on gastric volume was also evaluated.

Detailed description

This prospective observational study was conducted to evaluate the effect of preoperative fasting duration on gastric volume and antral visibility in pregnant women undergoing elective cesarean section. A total of 90 pregnant women were included in the study and divided into two groups based on fasting duration (6-8 hours and 8-10 hours). Preoperative gastric ultrasonography was performed in all patients to measure antral cross-sectional area and estimate gastric volume. Gastric content was also assessed using antral grading. Demographic and clinical data including age, body mass index, ASA physical status, comorbidities, and fetal characteristics were recorded. Postoperative outcomes such as nausea, vomiting, and aspiration were evaluated and their relationship with gastric ultrasound findings was analyzed. Additionally, factors affecting gastric volume were assessed using statistical models. The results of this study may contribute to improved perioperative risk stratification and individualized assessment of aspiration risk in obstetric anesthesia, and may help optimize preoperative fasting protocols.

Conditions

• Pregnancy
• Ceserean Section
• Gastric Volume
• Postoperative Nausea and Vomit

Timeline

• Start date: 2024-06-01
• Primary completion: 2025-06-01
• Completion: 2025-06-01
• First posted: 2026-04-07
• Last updated: 2026-04-07

Locations

1 site across 1 country: Turkey (Türkiye)