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

Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexFemale
Age18+
SponsorThe Chaim Sheba Medical Center

About this trial

The risk of pulmonary aspiration of gastric contents remains a significant risk during anesthesia, especially in pregnant women, as they may often require surgery without having observed appropriate fasting. A bedside ultrasound assessment of the status of the gastric content would be of great value for the clinician.

This prospective observational study aimed to (1) qualitatively and quantitatively describe the sonographic appearance of the gastric antrum in fasted high-risk pregnant women during the third trimester and (2) evaluate the relationship between demographic and clinical variables and the gastric antral cross-sectional area (CSA).

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Non-labouring pregnant women at 3rd trimester (≥ 28 weeks)

18 years or older.

ASA physical status I-III

Hospitilized in High Risk Pregnancy Department

Disqualifiers

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.

Trial population

Fasted (6h solids, 2h fluids) high-risk pregnant women at 3rd trimester

Trial design

Design model

Case-only

Time perspective

Prospective

Treatments tested in this trial

  • Two-dimensional portable ultrasound unit with a low frequency (2-5 MHz) curved array transducer

    Diagnostic test

    Two-dimensional portable ultrasound unit with a low frequency (2-5 MHz) curved array transducer

Treatment groups

No treatment groups listed

Trial outcomes

Primary outcomes

1

Qualitative assessment of the antrum of the stomach

Patients will be classified as follows; Grade 0: the antrum appears empty on both supine and right lateral decubitus positions; grade 1: gastric fluid is visible on the right lateral decubitus position only, suggesting a small fluid volume; and grade 2: gastric fluid is observed in the antrum in both supine and right lateral decubitus, suggesting a larger fluid volume.

Time frame
10 min

Secondary outcomes

1

Quantitative assessment of the antrum of the stomach

Three consecutive measures of the CSA (cross sectional area) of the antrum will be calculated via the ultrasound machine (free tracing method).

Time frame
10 min

Other outcomes

Locations

This trial has no locations.

Sponsors and contacts

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