Ultrasonographic Comparison of Gastric Volume After Three Modes of Positive Facemask During Induction of Anaesthesia (UGV)

Regional University Hospital Center (CHRU)

Status: Unknown

Conditions: Positive-Pressure Respiration; Respiratory Aspiration of Gastric Content

Treatments: Other: Diagnostic ultrasonography of gastric volume

Study type: Interventional

Funder types: Other

Identifiers

NCT02906267

Ultrasonic gastric volume

Details and patient eligibility

About

This study is designed to evaluate the occurrence of gastric insufflation and the critical volume of the stomach after three different modes of positive pressure ventilation during induction (Manual-controlled, volume-controlled and pressure-controlled ventilation)

Full description

Aspiration of gastric contents can be a serious perioperative complication, which can be related to facemask positive pressure ventilation with unprotected airway. Even with low peak airway pressure (<15 cm H2O) gastric insufflation may occur. Since gastric content and volume assessment is a new point-of-care ultrasound recommended application, the cross-sectional antra area will be measured using ultrasonography before, continuously during facemask ventilation and after intubation.

Enrollment: 123 estimated patients

Sex: All

Ages: 18 to 65 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• ASA status I and II

Exclusion criteria

• Pregnant woman Obese patient (BMI>30kgm-2) oropharyngeal or facial anomalies anticipated difficult mask ventilation upper respiratory tract infection history of gastric surgery patient refusal

Trial design

Primary purpose: Diagnostic

Allocation: Non-Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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123 participants in 3 patient groups

Manual-controlled

Other group

Description:

Patient in the manual ventilation group will receive facemask ventilation to get a tidal volume of 8-10ml/kg with a respiratory rate of 15/min. The pop-off valve will be set to 20 cm H2O.

Treatment:

Other: Diagnostic ultrasonography of gastric volume

Volume-controlled

Other group

Description:

mechanical breath will be delivered by a Primus ventilator (Dräger, Lubeck, Germany) at a frequency of 15 breath/min. Tidal volume will be set to 8-10 ml/min.

Treatment:

Other: Diagnostic ultrasonography of gastric volume

Pressure-controlled

Other group

Description:

mechanical breath will be delivered by a Primus ventilator (Dräger, Lubeck, Germany) at a frequency of 15 breath/min. Pressure will be adjusted to obtain a tidal volume of 8-10 ml/min.

Treatment:

Other: Diagnostic ultrasonography of gastric volume