Ultrasound Assessment of Gastric Volume in High-Risk Pregnant Women At Term

The aim of this prospective study is to provide a qualitative and quantitative description of the sonographic appearance of the gastric antrum in fasted high-risk pregnant women in the 3rd trimester.

The investigators expect that the information obtained from the systematic ultrasonographic qualitative/quantitative assessment of the gastric content may help anesthesiologist to better assess aspiration risk and guide anesthetic and airway management, particularly in pregnant women scheduled for elective Cesarean delivery after standard preoperative fasting guidelines.

Inclusion criteria

• Non-labouring pregnant women at 3rd trimester (≥ 28 weeks)
• 18 years or older.
• ASA physical status I-III
• Hospitilized in High Risk Pregnancy Department
• Ability to understand the rationale of the study assessments and provide signed informed consent.
• Written informed consent

Exclusion criteria

• Patients with American Society of Anesthesiology (ASA) physical status class IV.
• Patient age < 18 years
• Pregnant patients with upper gastrointestinal (GI) disease and pathology.
• History of upper GI tract surgical procedures.
• History of medications that affect gastrointestinal motility.
• Inability to understand the rationale of the study assessments and provide signed informed consent.